/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_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:41,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:41,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:41,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:41,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:41,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:41,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:41,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:41,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:41,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:41,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:41,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:41,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:41,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:41,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:41,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:41,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:41,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:41,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:41,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:41,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:41,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:41,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:41,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:41,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:56:41,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:41,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:41,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:41,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:41,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:41,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:41,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:41,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:41,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:41,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:41,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:41,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:41,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:41,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:41,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:41,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:41,638 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:41,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:41,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:41,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:41,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:41,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:41,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:41,641 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:41,641 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:41,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:41,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:41,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:41,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:41,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:41,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:41,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:41,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:41,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:41,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:41,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:41,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:41,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:42,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:42,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:42,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:42,145 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:42,146 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:42,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-12-22 06:56:42,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64b88197/5926d26ad4d0441ca5cb3ab6920d67cd/FLAGaae8350c1 [2020-12-22 06:56:42,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:42,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2020-12-22 06:56:42,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64b88197/5926d26ad4d0441ca5cb3ab6920d67cd/FLAGaae8350c1 [2020-12-22 06:56:43,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f64b88197/5926d26ad4d0441ca5cb3ab6920d67cd [2020-12-22 06:56:43,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:43,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:43,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:43,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:43,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:43,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:43,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750eed54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43, skipping insertion in model container [2020-12-22 06:56:43,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:43,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:43,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:43,510 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_product45.cil.c[4942,4955] [2020-12-22 06:56:43,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:43,659 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:43,703 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_product45.cil.c[4942,4955] [2020-12-22 06:56:43,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:43,887 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:43,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43 WrapperNode [2020-12-22 06:56:43,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:43,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:43,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:43,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:43,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:43,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:43,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:43,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:43,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:43,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:44,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... [2020-12-22 06:56:44,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:44,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:44,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:44,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:44,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:44,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:45,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:45,339 INFO L299 CfgBuilder]: Removed 192 assume(true) statements. [2020-12-22 06:56:45,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:45 BoogieIcfgContainer [2020-12-22 06:56:45,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:45,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:45,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:45,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:45,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:43" (1/3) ... [2020-12-22 06:56:45,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b414d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:45, skipping insertion in model container [2020-12-22 06:56:45,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:43" (2/3) ... [2020-12-22 06:56:45,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b414d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:45, skipping insertion in model container [2020-12-22 06:56:45,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:45" (3/3) ... [2020-12-22 06:56:45,352 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-12-22 06:56:45,359 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:45,365 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:45,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:45,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:45,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:45,417 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:45,418 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:45,418 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:45,418 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:45,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:45,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-12-22 06:56:45,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:45,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:45,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:45,448 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:45,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1880189342, now seen corresponding path program 1 times [2020-12-22 06:56:45,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:45,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835052900] [2020-12-22 06:56:45,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:45,814 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 06:56:45,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835052900] [2020-12-22 06:56:45,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:45,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:45,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592149108] [2020-12-22 06:56:45,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:45,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:45,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:45,850 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2020-12-22 06:56:45,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:45,923 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2020-12-22 06:56:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:45,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:45,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:45,977 INFO L225 Difference]: With dead ends: 252 [2020-12-22 06:56:45,977 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 06:56:45,982 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 06:56:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 06:56:46,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 06:56:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 06:56:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-12-22 06:56:46,035 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-12-22 06:56:46,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,036 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-12-22 06:56:46,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-12-22 06:56:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:46,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,037 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 06:56:46,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:46,038 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1368021057, now seen corresponding path program 1 times [2020-12-22 06:56:46,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479746783] [2020-12-22 06:56:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,190 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 06:56:46,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479746783] [2020-12-22 06:56:46,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:46,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463972948] [2020-12-22 06:56:46,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:46,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:46,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:46,195 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-12-22 06:56:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,209 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-12-22 06:56:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:46,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:46,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,212 INFO L225 Difference]: With dead ends: 125 [2020-12-22 06:56:46,212 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 06:56:46,213 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 06:56:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 06:56:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-22 06:56:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 06:56:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-12-22 06:56:46,221 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-12-22 06:56:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,222 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-12-22 06:56:46,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-12-22 06:56:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:46,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,223 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 06:56:46,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:46,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2019078694, now seen corresponding path program 1 times [2020-12-22 06:56:46,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019463456] [2020-12-22 06:56:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,377 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 06:56:46,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019463456] [2020-12-22 06:56:46,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:46,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310546118] [2020-12-22 06:56:46,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:46,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:46,382 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-12-22 06:56:46,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,405 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-12-22 06:56:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:46,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:56:46,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,412 INFO L225 Difference]: With dead ends: 96 [2020-12-22 06:56:46,412 INFO L226 Difference]: Without dead ends: 51 [2020-12-22 06:56:46,413 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 06:56:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-22 06:56:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-12-22 06:56:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 06:56:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-12-22 06:56:46,428 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-12-22 06:56:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,429 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-12-22 06:56:46,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-12-22 06:56:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:56:46,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,430 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 06:56:46,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:46,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1511639432, now seen corresponding path program 1 times [2020-12-22 06:56:46,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932760632] [2020-12-22 06:56:46,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,509 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 06:56:46,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932760632] [2020-12-22 06:56:46,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:46,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107307100] [2020-12-22 06:56:46,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:46,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:46,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:46,512 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-12-22 06:56:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,570 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-12-22 06:56:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:46,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:56:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,572 INFO L225 Difference]: With dead ends: 117 [2020-12-22 06:56:46,573 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 06:56:46,573 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 06:56:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 06:56:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-12-22 06:56:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 06:56:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-12-22 06:56:46,584 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-12-22 06:56:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:46,584 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-12-22 06:56:46,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-12-22 06:56:46,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:56:46,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:46,586 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, 1, 1] [2020-12-22 06:56:46,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:46,587 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:46,587 INFO L82 PathProgramCache]: Analyzing trace with hash 406595852, now seen corresponding path program 1 times [2020-12-22 06:56:46,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:46,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481045795] [2020-12-22 06:56:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:46,748 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 06:56:46,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481045795] [2020-12-22 06:56:46,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:46,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:46,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737265332] [2020-12-22 06:56:46,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:46,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:46,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:46,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:46,752 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-12-22 06:56:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:46,981 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-12-22 06:56:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:46,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:56:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:46,986 INFO L225 Difference]: With dead ends: 247 [2020-12-22 06:56:46,986 INFO L226 Difference]: Without dead ends: 183 [2020-12-22 06:56:46,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:46,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-22 06:56:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-12-22 06:56:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-22 06:56:47,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-12-22 06:56:47,027 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-12-22 06:56:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:47,028 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-12-22 06:56:47,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-12-22 06:56:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:47,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,032 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, 1, 1, 1] [2020-12-22 06:56:47,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:47,034 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1601220342, now seen corresponding path program 1 times [2020-12-22 06:56:47,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873747112] [2020-12-22 06:56:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:47,153 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 06:56:47,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873747112] [2020-12-22 06:56:47,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:47,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:47,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627963887] [2020-12-22 06:56:47,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:47,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:47,158 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-12-22 06:56:47,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:47,296 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-12-22 06:56:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:47,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:47,299 INFO L225 Difference]: With dead ends: 234 [2020-12-22 06:56:47,299 INFO L226 Difference]: Without dead ends: 170 [2020-12-22 06:56:47,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:47,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-22 06:56:47,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-12-22 06:56:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-12-22 06:56:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-12-22 06:56:47,332 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-12-22 06:56:47,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:47,333 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-12-22 06:56:47,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-12-22 06:56:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:47,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,339 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, 1, 1, 1] [2020-12-22 06:56:47,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:56:47,340 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1343054904, now seen corresponding path program 1 times [2020-12-22 06:56:47,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031708199] [2020-12-22 06:56:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:47,448 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 06:56:47,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031708199] [2020-12-22 06:56:47,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:47,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:47,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844588372] [2020-12-22 06:56:47,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:47,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:47,454 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-12-22 06:56:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:47,545 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-12-22 06:56:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:47,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 06:56:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:47,549 INFO L225 Difference]: With dead ends: 465 [2020-12-22 06:56:47,549 INFO L226 Difference]: Without dead ends: 346 [2020-12-22 06:56:47,550 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 06:56:47,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-22 06:56:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-12-22 06:56:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-12-22 06:56:47,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-12-22 06:56:47,567 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-12-22 06:56:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:47,567 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-12-22 06:56:47,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:47,568 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-12-22 06:56:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:56:47,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,569 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, 1, 1, 1] [2020-12-22 06:56:47,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:47,569 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1736081914, now seen corresponding path program 1 times [2020-12-22 06:56:47,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200741249] [2020-12-22 06:56:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:47,642 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 06:56:47,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200741249] [2020-12-22 06:56:47,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:47,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:47,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066604496] [2020-12-22 06:56:47,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:47,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:47,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:47,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:47,645 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 5 states. [2020-12-22 06:56:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:47,805 INFO L93 Difference]: Finished difference Result 504 states and 700 transitions. [2020-12-22 06:56:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:47,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:56:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:47,809 INFO L225 Difference]: With dead ends: 504 [2020-12-22 06:56:47,809 INFO L226 Difference]: Without dead ends: 343 [2020-12-22 06:56:47,810 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 06:56:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-12-22 06:56:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 176. [2020-12-22 06:56:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-12-22 06:56:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-12-22 06:56:47,840 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-12-22 06:56:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:47,841 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-12-22 06:56:47,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-12-22 06:56:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:56:47,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:47,842 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, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:47,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:56:47,844 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:47,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:47,845 INFO L82 PathProgramCache]: Analyzing trace with hash -468355170, now seen corresponding path program 1 times [2020-12-22 06:56:47,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:47,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078645362] [2020-12-22 06:56:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:47,960 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 06:56:47,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078645362] [2020-12-22 06:56:47,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:47,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:47,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009302787] [2020-12-22 06:56:47,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:47,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:47,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:47,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:47,971 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-12-22 06:56:48,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,240 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-12-22 06:56:48,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:56:48,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-12-22 06:56:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,245 INFO L225 Difference]: With dead ends: 834 [2020-12-22 06:56:48,245 INFO L226 Difference]: Without dead ends: 664 [2020-12-22 06:56:48,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:56:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-12-22 06:56:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-12-22 06:56:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-12-22 06:56:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-12-22 06:56:48,295 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-12-22 06:56:48,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,301 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-12-22 06:56:48,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-12-22 06:56:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:56:48,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,304 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, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:48,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:48,304 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1306652192, now seen corresponding path program 1 times [2020-12-22 06:56:48,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336928730] [2020-12-22 06:56:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,406 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 06:56:48,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336928730] [2020-12-22 06:56:48,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:48,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175100190] [2020-12-22 06:56:48,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:48,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:48,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:48,414 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-12-22 06:56:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,618 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-12-22 06:56:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:48,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-22 06:56:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,622 INFO L225 Difference]: With dead ends: 740 [2020-12-22 06:56:48,622 INFO L226 Difference]: Without dead ends: 502 [2020-12-22 06:56:48,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 06:56:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-12-22 06:56:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-12-22 06:56:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-22 06:56:48,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-12-22 06:56:48,655 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-12-22 06:56:48,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,655 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-12-22 06:56:48,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:48,655 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-12-22 06:56:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:56:48,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,657 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 06:56:48,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:56:48,657 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,658 INFO L82 PathProgramCache]: Analyzing trace with hash -553017344, now seen corresponding path program 1 times [2020-12-22 06:56:48,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392473216] [2020-12-22 06:56:48,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,725 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 06:56:48,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392473216] [2020-12-22 06:56:48,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:48,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929022791] [2020-12-22 06:56:48,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:48,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:48,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:48,728 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-12-22 06:56:48,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:48,849 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-12-22 06:56:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:48,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 06:56:48,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:48,853 INFO L225 Difference]: With dead ends: 745 [2020-12-22 06:56:48,853 INFO L226 Difference]: Without dead ends: 423 [2020-12-22 06:56:48,854 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 06:56:48,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-12-22 06:56:48,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-12-22 06:56:48,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-22 06:56:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-12-22 06:56:48,884 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-12-22 06:56:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:48,885 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-12-22 06:56:48,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-12-22 06:56:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:56:48,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:48,886 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 06:56:48,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:56:48,887 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:48,887 INFO L82 PathProgramCache]: Analyzing trace with hash 148582530, now seen corresponding path program 1 times [2020-12-22 06:56:48,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:48,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826001655] [2020-12-22 06:56:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:48,945 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 06:56:48,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826001655] [2020-12-22 06:56:48,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:48,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:48,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866562308] [2020-12-22 06:56:48,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:48,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:48,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:48,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:48,947 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-12-22 06:56:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:49,033 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-12-22 06:56:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:49,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:56:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:49,037 INFO L225 Difference]: With dead ends: 668 [2020-12-22 06:56:49,037 INFO L226 Difference]: Without dead ends: 346 [2020-12-22 06:56:49,038 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 06:56:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-12-22 06:56:49,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-12-22 06:56:49,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 06:56:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-12-22 06:56:49,079 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-12-22 06:56:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:49,079 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-12-22 06:56:49,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-12-22 06:56:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:56:49,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:49,081 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 06:56:49,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:56:49,081 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash -701166778, now seen corresponding path program 1 times [2020-12-22 06:56:49,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:49,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977100704] [2020-12-22 06:56:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:49,169 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 06:56:49,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977100704] [2020-12-22 06:56:49,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:49,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:49,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102501158] [2020-12-22 06:56:49,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:49,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:49,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:49,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:49,172 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 6 states. [2020-12-22 06:56:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:49,448 INFO L93 Difference]: Finished difference Result 714 states and 934 transitions. [2020-12-22 06:56:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:56:49,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 06:56:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:49,452 INFO L225 Difference]: With dead ends: 714 [2020-12-22 06:56:49,452 INFO L226 Difference]: Without dead ends: 506 [2020-12-22 06:56:49,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:56:49,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-12-22 06:56:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 262. [2020-12-22 06:56:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 06:56:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 334 transitions. [2020-12-22 06:56:49,480 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 334 transitions. Word has length 52 [2020-12-22 06:56:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:49,481 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 334 transitions. [2020-12-22 06:56:49,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 334 transitions. [2020-12-22 06:56:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:56:49,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:49,482 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 06:56:49,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:56:49,482 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:49,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:49,483 INFO L82 PathProgramCache]: Analyzing trace with hash -956023316, now seen corresponding path program 1 times [2020-12-22 06:56:49,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:49,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606221272] [2020-12-22 06:56:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:49,573 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 06:56:49,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606221272] [2020-12-22 06:56:49,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425862070] [2020-12-22 06:56:49,573 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 06:56:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:49,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:50,120 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 06:56:50,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:50,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-22 06:56:50,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557629806] [2020-12-22 06:56:50,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:50,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:50,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:50,125 INFO L87 Difference]: Start difference. First operand 262 states and 334 transitions. Second operand 6 states. [2020-12-22 06:56:50,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:50,455 INFO L93 Difference]: Finished difference Result 805 states and 1041 transitions. [2020-12-22 06:56:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:56:50,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 06:56:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:50,459 INFO L225 Difference]: With dead ends: 805 [2020-12-22 06:56:50,460 INFO L226 Difference]: Without dead ends: 597 [2020-12-22 06:56:50,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:56:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-12-22 06:56:50,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-12-22 06:56:50,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-12-22 06:56:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-12-22 06:56:50,503 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-12-22 06:56:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:50,503 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-12-22 06:56:50,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-12-22 06:56:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:56:50,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:50,505 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 06:56:50,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 06:56:50,720 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1396677984, now seen corresponding path program 2 times [2020-12-22 06:56:50,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:50,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866150826] [2020-12-22 06:56:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:50,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:50,857 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:50,921 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:50,921 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:50,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:56:51,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:51 BoogieIcfgContainer [2020-12-22 06:56:51,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:51,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:51,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:51,135 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:51,136 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:45" (3/4) ... [2020-12-22 06:56:51,138 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:51,333 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product45.cil.c-witness.graphml [2020-12-22 06:56:51,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:51,335 INFO L168 Benchmark]: Toolchain (without parser) took 8128.98 ms. Allocated memory was 155.2 MB in the beginning and 262.1 MB in the end (delta: 107.0 MB). Free memory was 130.0 MB in the beginning and 224.9 MB in the end (delta: -94.9 MB). Peak memory consumption was 124.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,335 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 155.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:51,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.78 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 108.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.18 ms. Allocated memory is still 155.2 MB. Free memory was 108.7 MB in the beginning and 104.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,337 INFO L168 Benchmark]: Boogie Preprocessor took 139.65 ms. Allocated memory is still 155.2 MB. Free memory was 104.8 MB in the beginning and 136.5 MB in the end (delta: -31.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,337 INFO L168 Benchmark]: RCFGBuilder took 1205.36 ms. Allocated memory is still 155.2 MB. Free memory was 136.5 MB in the beginning and 71.0 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,338 INFO L168 Benchmark]: TraceAbstraction took 5790.85 ms. Allocated memory was 155.2 MB in the beginning and 218.1 MB in the end (delta: 62.9 MB). Free memory was 70.4 MB in the beginning and 88.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,338 INFO L168 Benchmark]: Witness Printer took 198.44 ms. Allocated memory was 218.1 MB in the beginning and 262.1 MB in the end (delta: 44.0 MB). Free memory was 88.1 MB in the beginning and 224.9 MB in the end (delta: -136.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:51,340 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 155.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 681.78 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 108.9 MB in the end (delta: 20.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 104.18 ms. Allocated memory is still 155.2 MB. Free memory was 108.7 MB in the beginning and 104.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 139.65 ms. Allocated memory is still 155.2 MB. Free memory was 104.8 MB in the beginning and 136.5 MB in the end (delta: -31.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1205.36 ms. Allocated memory is still 155.2 MB. Free memory was 136.5 MB in the beginning and 71.0 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5790.85 ms. Allocated memory was 155.2 MB in the beginning and 218.1 MB in the end (delta: 62.9 MB). Free memory was 70.4 MB in the beginning and 88.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. * Witness Printer took 198.44 ms. Allocated memory was 218.1 MB in the beginning and 262.1 MB in the end (delta: 44.0 MB). Free memory was 88.1 MB in the beginning and 224.9 MB in the end (delta: -136.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 319]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L119] int pumpRunning = 0; [L120] int systemActive = 1; [L493] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L717] int cleanupTimeShifts = 4; [L816] int waterLevel = 1; [L817] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L793] int retValue_acc ; [L794] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L936] int retValue_acc ; [L939] retValue_acc = 1 [L940] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] COND TRUE waterLevel < 2 [L835] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L127] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] COND FALSE !(\read(pumpRunning)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L159] COND TRUE ! pumpRunning [L296] int retValue_acc ; [L297] int tmp ; [L298] int tmp___0 ; [L896] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L899] COND FALSE !(waterLevel < 2) [L903] retValue_acc = 0 [L904] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] tmp = isHighWaterSensorDry() [L304] COND FALSE !(\read(tmp)) [L307] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L309] retValue_acc = tmp___0 [L310] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L161] tmp = isHighWaterLevel() [L163] COND TRUE \read(tmp) [L215] int tmp ; [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L219] tmp = isMethaneAlarm() [L221] COND FALSE !(\read(tmp)) [L210] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L697] tmp = getWaterLevel() [L699] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L127] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L822] COND TRUE waterLevel > 0 [L823] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L134] COND TRUE \read(systemActive) [L182] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L185] COND TRUE \read(pumpRunning) [L240] int retValue_acc ; [L855] int retValue_acc ; [L858] retValue_acc = methaneLevelCritical [L859] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L244] retValue_acc = isMethaneLevelCritical() [L246] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] tmp = isMethaneAlarm() [L189] COND FALSE !(\read(tmp)) [L156] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L692] int tmp ; [L693] int tmp___0 ; [L887] int retValue_acc ; [L890] retValue_acc = waterLevel [L891] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L697] tmp = getWaterLevel() [L699] COND TRUE tmp == 0 [L251] int retValue_acc ; [L254] retValue_acc = pumpRunning [L255] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L701] tmp___0 = isPumpRunning() [L703] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L319] 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, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1535 SDtfs, 2084 SDslu, 2537 SDs, 0 SdLazy, 370 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, 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, 14 MinimizatonAttempts, 1579 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 38441 SizeOfPredicates, 3 NumberOfNonLiveVariables, 432 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...