/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_spec4_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:43,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:43,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:43,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:43,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:43,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:43,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:43,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:43,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:43,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:43,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:43,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:43,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:43,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:43,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:43,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:43,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:43,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:43,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:43,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:43,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:43,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:43,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:43,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:43,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:43,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:43,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:43,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:43,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:43,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:43,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:43,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:43,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:43,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:43,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:43,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:43,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:43,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:43,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:43,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:43,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:43,735 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:43,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:43,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:43,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:43,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:43,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:43,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:43,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:43,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:43,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:43,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:43,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:43,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:43,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:43,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:43,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:43,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:43,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:43,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:43,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:43,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:43,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:44,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:44,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:44,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:44,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:44,184 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:44,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-12-22 06:56:44,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fce2e61/4ec841371bce43f1a1877102f8b5cc40/FLAGd834c8c41 [2020-12-22 06:56:45,034 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:45,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2020-12-22 06:56:45,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fce2e61/4ec841371bce43f1a1877102f8b5cc40/FLAGd834c8c41 [2020-12-22 06:56:45,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62fce2e61/4ec841371bce43f1a1877102f8b5cc40 [2020-12-22 06:56:45,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:45,356 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:45,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:45,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:45,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:45,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:45" (1/1) ... [2020-12-22 06:56:45,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d365369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:45, skipping insertion in model container [2020-12-22 06:56:45,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:45" (1/1) ... [2020-12-22 06:56:45,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:45,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:45,842 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_spec4_product48.cil.c[11394,11407] [2020-12-22 06:56:45,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:45,996 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:46,119 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_spec4_product48.cil.c[11394,11407] [2020-12-22 06:56:46,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:46,195 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:46,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46 WrapperNode [2020-12-22 06:56:46,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:46,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:46,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:46,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:46,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:46,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:46,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:46,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:46,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (1/1) ... [2020-12-22 06:56:46,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:46,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:46,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:46,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:46,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (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 06:56:46,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:46,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:46,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:47,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:47,749 INFO L299 CfgBuilder]: Removed 198 assume(true) statements. [2020-12-22 06:56:47,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:47 BoogieIcfgContainer [2020-12-22 06:56:47,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:47,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:47,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:47,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:47,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:45" (1/3) ... [2020-12-22 06:56:47,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ae36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:47, skipping insertion in model container [2020-12-22 06:56:47,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:46" (2/3) ... [2020-12-22 06:56:47,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8ae36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:47, skipping insertion in model container [2020-12-22 06:56:47,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:47" (3/3) ... [2020-12-22 06:56:47,762 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2020-12-22 06:56:47,768 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:47,774 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:47,794 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:47,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:47,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:47,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:47,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:47,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:47,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:47,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:47,825 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:47,843 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-12-22 06:56:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:47,850 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:47,852 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,859 INFO L82 PathProgramCache]: Analyzing trace with hash 325683581, now seen corresponding path program 1 times [2020-12-22 06:56:47,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224572909] [2020-12-22 06:56:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,259 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 06:56:48,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224572909] [2020-12-22 06:56:48,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:48,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250982632] [2020-12-22 06:56:48,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:48,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:48,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:48,295 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2020-12-22 06:56:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,366 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2020-12-22 06:56:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:48,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,389 INFO L225 Difference]: With dead ends: 256 [2020-12-22 06:56:48,390 INFO L226 Difference]: Without dead ends: 127 [2020-12-22 06:56:48,394 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 06:56:48,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-12-22 06:56:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-12-22 06:56:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-22 06:56:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2020-12-22 06:56:48,446 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2020-12-22 06:56:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,446 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2020-12-22 06:56:48,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2020-12-22 06:56:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:48,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:48,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:48,448 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1302516555, now seen corresponding path program 1 times [2020-12-22 06:56:48,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926086329] [2020-12-22 06:56:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,578 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 06:56:48,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926086329] [2020-12-22 06:56:48,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:48,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536447333] [2020-12-22 06:56:48,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:48,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:48,583 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 3 states. [2020-12-22 06:56:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,596 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2020-12-22 06:56:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:48,597 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,598 INFO L225 Difference]: With dead ends: 127 [2020-12-22 06:56:48,599 INFO L226 Difference]: Without dead ends: 53 [2020-12-22 06:56:48,600 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 06:56:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-22 06:56:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-22 06:56:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 06:56:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2020-12-22 06:56:48,608 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2020-12-22 06:56:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,608 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2020-12-22 06:56:48,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2020-12-22 06:56:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:48,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,610 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] [2020-12-22 06:56:48,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:48,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1189907750, now seen corresponding path program 1 times [2020-12-22 06:56:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538323332] [2020-12-22 06:56:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,694 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 06:56:48,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538323332] [2020-12-22 06:56:48,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:48,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903027566] [2020-12-22 06:56:48,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:48,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:48,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:48,698 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 5 states. [2020-12-22 06:56:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,804 INFO L93 Difference]: Finished difference Result 123 states and 180 transitions. [2020-12-22 06:56:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:48,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-22 06:56:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,809 INFO L225 Difference]: With dead ends: 123 [2020-12-22 06:56:48,809 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 06:56:48,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 06:56:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 06:56:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-12-22 06:56:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-22 06:56:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2020-12-22 06:56:48,831 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2020-12-22 06:56:48,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,832 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2020-12-22 06:56:48,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2020-12-22 06:56:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:56:48,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,833 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 06:56:48,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:48,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,835 INFO L82 PathProgramCache]: Analyzing trace with hash 752688312, now seen corresponding path program 1 times [2020-12-22 06:56:48,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962865807] [2020-12-22 06:56:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:48,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962865807] [2020-12-22 06:56:48,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:48,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716667409] [2020-12-22 06:56:48,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:48,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:48,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:48,903 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2020-12-22 06:56:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,940 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2020-12-22 06:56:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:48,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:56:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,942 INFO L225 Difference]: With dead ends: 159 [2020-12-22 06:56:48,942 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 06:56:48,943 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 06:56:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 06:56:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-12-22 06:56:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 06:56:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2020-12-22 06:56:48,956 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2020-12-22 06:56:48,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,957 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2020-12-22 06:56:48,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2020-12-22 06:56:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:56:48,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,958 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 06:56:48,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:48,959 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2020-12-22 06:56:48,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673263500] [2020-12-22 06:56:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:49,130 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 06:56:49,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673263500] [2020-12-22 06:56:49,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:49,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:56:49,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45609758] [2020-12-22 06:56:49,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:49,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:49,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:49,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:49,134 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 8 states. [2020-12-22 06:56:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:49,591 INFO L93 Difference]: Finished difference Result 585 states and 851 transitions. [2020-12-22 06:56:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:56:49,595 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-22 06:56:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:49,603 INFO L225 Difference]: With dead ends: 585 [2020-12-22 06:56:49,604 INFO L226 Difference]: Without dead ends: 500 [2020-12-22 06:56:49,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:56:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-22 06:56:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 227. [2020-12-22 06:56:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-12-22 06:56:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2020-12-22 06:56:49,703 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2020-12-22 06:56:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:49,704 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2020-12-22 06:56:49,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2020-12-22 06:56:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:56:49,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:49,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:49,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:49,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:49,711 INFO L82 PathProgramCache]: Analyzing trace with hash 31993027, now seen corresponding path program 1 times [2020-12-22 06:56:49,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:49,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472844482] [2020-12-22 06:56:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:49,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472844482] [2020-12-22 06:56:49,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041921056] [2020-12-22 06:56:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:50,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:56:50,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:50,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 06:56:50,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-12-22 06:56:50,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956911561] [2020-12-22 06:56:50,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:50,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:50,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:50,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:50,112 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand 4 states. [2020-12-22 06:56:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:50,243 INFO L93 Difference]: Finished difference Result 508 states and 721 transitions. [2020-12-22 06:56:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:50,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 06:56:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:50,246 INFO L225 Difference]: With dead ends: 508 [2020-12-22 06:56:50,246 INFO L226 Difference]: Without dead ends: 349 [2020-12-22 06:56:50,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-12-22 06:56:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 337. [2020-12-22 06:56:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-12-22 06:56:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2020-12-22 06:56:50,309 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 41 [2020-12-22 06:56:50,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:50,309 INFO L481 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2020-12-22 06:56:50,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:50,309 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2020-12-22 06:56:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:56:50,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:50,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:50,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 06:56:50,527 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:50,529 INFO L82 PathProgramCache]: Analyzing trace with hash 502083210, now seen corresponding path program 1 times [2020-12-22 06:56:50,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:50,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767046105] [2020-12-22 06:56:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:50,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767046105] [2020-12-22 06:56:50,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:50,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:50,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65529680] [2020-12-22 06:56:50,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:50,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:50,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:50,636 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand 5 states. [2020-12-22 06:56:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:50,751 INFO L93 Difference]: Finished difference Result 1043 states and 1460 transitions. [2020-12-22 06:56:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:50,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 06:56:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:50,756 INFO L225 Difference]: With dead ends: 1043 [2020-12-22 06:56:50,756 INFO L226 Difference]: Without dead ends: 712 [2020-12-22 06:56:50,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:56:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-12-22 06:56:50,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 358. [2020-12-22 06:56:50,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-22 06:56:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 496 transitions. [2020-12-22 06:56:50,798 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 496 transitions. Word has length 51 [2020-12-22 06:56:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:50,798 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 496 transitions. [2020-12-22 06:56:50,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 496 transitions. [2020-12-22 06:56:50,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:56:50,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:50,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:50,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:50,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:50,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1203683084, now seen corresponding path program 1 times [2020-12-22 06:56:50,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:50,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092973723] [2020-12-22 06:56:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:50,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092973723] [2020-12-22 06:56:50,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:50,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317476847] [2020-12-22 06:56:50,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:50,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:50,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:50,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:50,858 INFO L87 Difference]: Start difference. First operand 358 states and 496 transitions. Second operand 4 states. [2020-12-22 06:56:50,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:50,934 INFO L93 Difference]: Finished difference Result 832 states and 1157 transitions. [2020-12-22 06:56:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:50,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:56:50,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:50,938 INFO L225 Difference]: With dead ends: 832 [2020-12-22 06:56:50,938 INFO L226 Difference]: Without dead ends: 480 [2020-12-22 06:56:50,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-12-22 06:56:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 312. [2020-12-22 06:56:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-12-22 06:56:50,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 428 transitions. [2020-12-22 06:56:50,976 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 428 transitions. Word has length 51 [2020-12-22 06:56:50,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:50,976 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 428 transitions. [2020-12-22 06:56:50,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:50,976 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 428 transitions. [2020-12-22 06:56:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:56:50,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:50,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:50,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:50,978 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:50,979 INFO L82 PathProgramCache]: Analyzing trace with hash 353933776, now seen corresponding path program 1 times [2020-12-22 06:56:50,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:50,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224720729] [2020-12-22 06:56:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 06:56:51,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224720729] [2020-12-22 06:56:51,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:51,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:51,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195535232] [2020-12-22 06:56:51,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:51,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:51,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:51,056 INFO L87 Difference]: Start difference. First operand 312 states and 428 transitions. Second operand 6 states. [2020-12-22 06:56:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:51,349 INFO L93 Difference]: Finished difference Result 1822 states and 2538 transitions. [2020-12-22 06:56:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:56:51,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 06:56:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:51,359 INFO L225 Difference]: With dead ends: 1822 [2020-12-22 06:56:51,359 INFO L226 Difference]: Without dead ends: 1516 [2020-12-22 06:56:51,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:56:51,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-12-22 06:56:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 616. [2020-12-22 06:56:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-12-22 06:56:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 833 transitions. [2020-12-22 06:56:51,447 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 833 transitions. Word has length 52 [2020-12-22 06:56:51,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:51,448 INFO L481 AbstractCegarLoop]: Abstraction has 616 states and 833 transitions. [2020-12-22 06:56:51,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 833 transitions. [2020-12-22 06:56:51,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:56:51,449 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:51,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:51,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:51,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1687322796, now seen corresponding path program 1 times [2020-12-22 06:56:51,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:51,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668962032] [2020-12-22 06:56:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:51,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668962032] [2020-12-22 06:56:51,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115076032] [2020-12-22 06:56:51,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:51,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:51,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:51,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:51,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 06:56:51,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603061618] [2020-12-22 06:56:51,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:51,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:51,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:51,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:51,764 INFO L87 Difference]: Start difference. First operand 616 states and 833 transitions. Second operand 8 states. [2020-12-22 06:56:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:52,127 INFO L93 Difference]: Finished difference Result 1648 states and 2217 transitions. [2020-12-22 06:56:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:56:52,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-12-22 06:56:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:52,135 INFO L225 Difference]: With dead ends: 1648 [2020-12-22 06:56:52,135 INFO L226 Difference]: Without dead ends: 1122 [2020-12-22 06:56:52,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:56:52,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-12-22 06:56:52,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 540. [2020-12-22 06:56:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 540 states. [2020-12-22 06:56:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 714 transitions. [2020-12-22 06:56:52,218 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 714 transitions. Word has length 53 [2020-12-22 06:56:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:52,218 INFO L481 AbstractCegarLoop]: Abstraction has 540 states and 714 transitions. [2020-12-22 06:56:52,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 714 transitions. [2020-12-22 06:56:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:56:52,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:52,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:52,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 06:56:52,434 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:52,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:52,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1211162538, now seen corresponding path program 2 times [2020-12-22 06:56:52,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:52,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902875097] [2020-12-22 06:56:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:52,532 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:52,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:52,736 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:52,737 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:52,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:56:52,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:52 BoogieIcfgContainer [2020-12-22 06:56:52,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:52,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:52,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:52,928 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:52,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:47" (3/4) ... [2020-12-22 06:56:52,931 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:53,164 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product48.cil.c-witness.graphml [2020-12-22 06:56:53,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:53,166 INFO L168 Benchmark]: Toolchain (without parser) took 7809.35 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 125.9 MB in the beginning and 154.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 72.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,166 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:53,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 835.94 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 168.47 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 132.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,167 INFO L168 Benchmark]: Boogie Preprocessor took 142.43 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 129.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,168 INFO L168 Benchmark]: RCFGBuilder took 1241.66 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 62.2 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,168 INFO L168 Benchmark]: TraceAbstraction took 5173.47 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 61.7 MB in the beginning and 182.4 MB in the end (delta: -120.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:53,169 INFO L168 Benchmark]: Witness Printer took 236.47 ms. Allocated memory is still 250.6 MB. Free memory was 182.4 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:53,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 835.94 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 103.9 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 168.47 ms. Allocated memory is still 151.0 MB. Free memory was 103.7 MB in the beginning and 132.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.43 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 129.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1241.66 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 62.2 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5173.47 ms. Allocated memory was 151.0 MB in the beginning and 250.6 MB in the end (delta: 99.6 MB). Free memory was 61.7 MB in the beginning and 182.4 MB in the end (delta: -120.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 236.47 ms. Allocated memory is still 250.6 MB. Free memory was 182.4 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 441]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L240] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L446] int cleanupTimeShifts = 4; [L558] int pumpRunning = 0; [L559] int systemActive = 1; [L776] int waterLevel = 1; [L777] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L527] int retValue_acc ; [L528] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L965] int retValue_acc ; [L968] retValue_acc = 1 [L969] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] tmp = valid_product() [L536] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] int splverifierCounter ; [L872] int tmp ; [L873] int tmp___0 ; [L874] int tmp___1 ; [L875] int tmp___2 ; [L878] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] tmp = __VERIFIER_nondet_int() [L890] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L794] COND TRUE waterLevel < 2 [L795] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L565] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L623] COND FALSE !(\read(pumpRunning)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND TRUE ! pumpRunning [L734] int retValue_acc ; [L735] int tmp ; [L736] int tmp___0 ; [L856] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L859] COND FALSE !(waterLevel < 2) [L863] retValue_acc = 0 [L864] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L740] tmp = isHighWaterSensorDry() [L742] COND FALSE !(\read(tmp)) [L745] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L747] retValue_acc = tmp___0 [L748] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] tmp = isHighWaterLevel() [L601] COND TRUE \read(tmp) [L653] int tmp ; [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L657] tmp = isMethaneAlarm() [L659] COND FALSE !(\read(tmp)) [L648] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L888] tmp = __VERIFIER_nondet_int() [L890] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L782] COND TRUE waterLevel > 0 [L783] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE \read(pumpRunning) [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L625] tmp = isMethaneAlarm() [L627] COND FALSE !(\read(tmp)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L597] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L51] tmp = getWaterLevel() [L53] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L888] tmp = __VERIFIER_nondet_int() [L890] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L898] tmp___0 = __VERIFIER_nondet_int() [L900] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp___2 = __VERIFIER_nondet_int() [L910] COND TRUE \read(tmp___2) [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L782] COND TRUE waterLevel > 0 [L783] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L572] COND TRUE \read(systemActive) [L620] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L623] COND TRUE \read(pumpRunning) [L678] int retValue_acc ; [L815] int retValue_acc ; [L818] retValue_acc = methaneLevelCritical [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L682] retValue_acc = isMethaneLevelCritical() [L684] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L625] tmp = isMethaneAlarm() [L627] COND FALSE !(\read(tmp)) [L594] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L597] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L46] int tmp ; [L47] int tmp___0 ; [L847] int retValue_acc ; [L850] retValue_acc = waterLevel [L851] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L51] tmp = getWaterLevel() [L53] COND TRUE tmp == 0 [L689] int retValue_acc ; [L692] retValue_acc = pumpRunning [L693] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L441] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1134 SDtfs, 2099 SDslu, 2274 SDs, 0 SdLazy, 322 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 2295 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 434 ConstructedInterpolants, 0 QuantifiedInterpolants, 36462 SizeOfPredicates, 3 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 89/100 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...