/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_spec1_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:36,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:36,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:36,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:36,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:36,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:36,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:36,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:36,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:36,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:36,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:36,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:36,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:36,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:36,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:36,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:36,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:36,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:36,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:36,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:36,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:36,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:36,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:36,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:36,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:53:36,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:36,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:36,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:36,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:36,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:36,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:36,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:36,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:36,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:36,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:36,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:36,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:36,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:36,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:36,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:36,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:36,566 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:36,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:36,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:36,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:36,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:36,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:36,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:36,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:36,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:36,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:36,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:36,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:36,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:36,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:36,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:36,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:36,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:36,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:36,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:36,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:36,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:36,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:36,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:36,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:36,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:36,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:36,970 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:36,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2020-12-22 06:53:37,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06f62d1b/e19bb726a642485abcbef1955ba4d405/FLAG7023dc84a [2020-12-22 06:53:37,718 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:37,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2020-12-22 06:53:37,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06f62d1b/e19bb726a642485abcbef1955ba4d405/FLAG7023dc84a [2020-12-22 06:53:38,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06f62d1b/e19bb726a642485abcbef1955ba4d405 [2020-12-22 06:53:38,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:38,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:38,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:38,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:38,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:38,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dce983e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38, skipping insertion in model container [2020-12-22 06:53:38,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:38,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:38,472 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_spec1_product51.cil.c[14932,14945] [2020-12-22 06:53:38,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:38,520 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:38,587 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_spec1_product51.cil.c[14932,14945] [2020-12-22 06:53:38,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:38,645 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:38,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38 WrapperNode [2020-12-22 06:53:38,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:38,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:38,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:38,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:38,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:38,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:38,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:38,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:38,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (1/1) ... [2020-12-22 06:53:38,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:38,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:38,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:38,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:38,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (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 06:53:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:39,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:40,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:40,063 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2020-12-22 06:53:40,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:40 BoogieIcfgContainer [2020-12-22 06:53:40,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:40,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:40,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:40,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:40,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:38" (1/3) ... [2020-12-22 06:53:40,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c77e963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:40, skipping insertion in model container [2020-12-22 06:53:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:38" (2/3) ... [2020-12-22 06:53:40,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c77e963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:40, skipping insertion in model container [2020-12-22 06:53:40,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:40" (3/3) ... [2020-12-22 06:53:40,075 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2020-12-22 06:53:40,082 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:40,087 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:40,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:40,135 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:40,135 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:40,135 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:40,135 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:40,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:40,136 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:40,136 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:40,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:40,155 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-12-22 06:53:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:40,162 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:40,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1844308238, now seen corresponding path program 1 times [2020-12-22 06:53:40,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392820076] [2020-12-22 06:53:40,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,488 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 06:53:40,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392820076] [2020-12-22 06:53:40,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:40,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841016666] [2020-12-22 06:53:40,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:40,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:40,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:40,533 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 2 states. [2020-12-22 06:53:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,570 INFO L93 Difference]: Finished difference Result 232 states and 353 transitions. [2020-12-22 06:53:40,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:40,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:40,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,585 INFO L225 Difference]: With dead ends: 232 [2020-12-22 06:53:40,586 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 06:53:40,589 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 06:53:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 06:53:40,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-22 06:53:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 06:53:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-12-22 06:53:40,639 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2020-12-22 06:53:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,639 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-12-22 06:53:40,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-12-22 06:53:40,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:40,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,641 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 06:53:40,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:40,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -323074868, now seen corresponding path program 1 times [2020-12-22 06:53:40,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063091632] [2020-12-22 06:53:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:40,841 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 06:53:40,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063091632] [2020-12-22 06:53:40,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:40,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:40,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038748621] [2020-12-22 06:53:40,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:40,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:40,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:40,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:40,848 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-12-22 06:53:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:40,862 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-12-22 06:53:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:40,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:40,864 INFO L225 Difference]: With dead ends: 115 [2020-12-22 06:53:40,865 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 06:53:40,869 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 06:53:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 06:53:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 06:53:40,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 06:53:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-12-22 06:53:40,888 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2020-12-22 06:53:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:40,889 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-12-22 06:53:40,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-12-22 06:53:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:40,890 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:40,890 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 06:53:40,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:40,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:40,892 INFO L82 PathProgramCache]: Analyzing trace with hash -426243093, now seen corresponding path program 1 times [2020-12-22 06:53:40,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:40,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417484262] [2020-12-22 06:53:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:41,053 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 06:53:41,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417484262] [2020-12-22 06:53:41,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:41,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:41,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398886287] [2020-12-22 06:53:41,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:41,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:41,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:41,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:41,059 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 3 states. [2020-12-22 06:53:41,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:41,102 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2020-12-22 06:53:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:41,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:53:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:41,110 INFO L225 Difference]: With dead ends: 135 [2020-12-22 06:53:41,111 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 06:53:41,111 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 06:53:41,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 06:53:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-12-22 06:53:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-22 06:53:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2020-12-22 06:53:41,126 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 22 [2020-12-22 06:53:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:41,126 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2020-12-22 06:53:41,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2020-12-22 06:53:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:41,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:41,128 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 06:53:41,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:41,129 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:41,130 INFO L82 PathProgramCache]: Analyzing trace with hash 844046893, now seen corresponding path program 1 times [2020-12-22 06:53:41,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:41,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476638927] [2020-12-22 06:53:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:53:41,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476638927] [2020-12-22 06:53:41,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:41,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:41,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497518072] [2020-12-22 06:53:41,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:41,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:41,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:41,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:41,268 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand 3 states. [2020-12-22 06:53:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:41,344 INFO L93 Difference]: Finished difference Result 211 states and 318 transitions. [2020-12-22 06:53:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:41,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:41,350 INFO L225 Difference]: With dead ends: 211 [2020-12-22 06:53:41,350 INFO L226 Difference]: Without dead ends: 129 [2020-12-22 06:53:41,351 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 06:53:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-22 06:53:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2020-12-22 06:53:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-12-22 06:53:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2020-12-22 06:53:41,384 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 24 [2020-12-22 06:53:41,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:41,384 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2020-12-22 06:53:41,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:41,384 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2020-12-22 06:53:41,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 06:53:41,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:41,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:41,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:41,389 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:41,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1604149312, now seen corresponding path program 1 times [2020-12-22 06:53:41,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:41,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754113035] [2020-12-22 06:53:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:41,528 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 06:53:41,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754113035] [2020-12-22 06:53:41,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:41,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:41,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432813919] [2020-12-22 06:53:41,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:41,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:41,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:41,533 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand 5 states. [2020-12-22 06:53:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:41,672 INFO L93 Difference]: Finished difference Result 683 states and 1014 transitions. [2020-12-22 06:53:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:41,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-22 06:53:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:41,681 INFO L225 Difference]: With dead ends: 683 [2020-12-22 06:53:41,681 INFO L226 Difference]: Without dead ends: 562 [2020-12-22 06:53:41,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:53:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-12-22 06:53:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 238. [2020-12-22 06:53:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-22 06:53:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-12-22 06:53:41,739 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 25 [2020-12-22 06:53:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:41,739 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-12-22 06:53:41,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-12-22 06:53:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 06:53:41,742 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:41,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:41,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:41,743 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:41,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1807956406, now seen corresponding path program 1 times [2020-12-22 06:53:41,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:41,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217715446] [2020-12-22 06:53:41,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:41,889 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 06:53:41,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217715446] [2020-12-22 06:53:41,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:41,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:41,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095201326] [2020-12-22 06:53:41,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:41,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:41,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:41,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:41,895 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 5 states. [2020-12-22 06:53:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:42,073 INFO L93 Difference]: Finished difference Result 684 states and 990 transitions. [2020-12-22 06:53:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:42,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 06:53:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:42,078 INFO L225 Difference]: With dead ends: 684 [2020-12-22 06:53:42,078 INFO L226 Difference]: Without dead ends: 682 [2020-12-22 06:53:42,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:53:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-12-22 06:53:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 238. [2020-12-22 06:53:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-22 06:53:42,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2020-12-22 06:53:42,110 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 26 [2020-12-22 06:53:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:42,110 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2020-12-22 06:53:42,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2020-12-22 06:53:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:42,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,118 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 06:53:42,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:42,119 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1131451540, now seen corresponding path program 1 times [2020-12-22 06:53:42,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010892411] [2020-12-22 06:53:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:42,220 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 06:53:42,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010892411] [2020-12-22 06:53:42,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:42,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:42,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82172175] [2020-12-22 06:53:42,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:42,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:42,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:42,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:42,224 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand 5 states. [2020-12-22 06:53:42,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:42,323 INFO L93 Difference]: Finished difference Result 650 states and 916 transitions. [2020-12-22 06:53:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:42,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:42,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:42,327 INFO L225 Difference]: With dead ends: 650 [2020-12-22 06:53:42,328 INFO L226 Difference]: Without dead ends: 418 [2020-12-22 06:53:42,331 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 06:53:42,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-12-22 06:53:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 262. [2020-12-22 06:53:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 06:53:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2020-12-22 06:53:42,359 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 365 transitions. Word has length 31 [2020-12-22 06:53:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:42,361 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 365 transitions. [2020-12-22 06:53:42,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 365 transitions. [2020-12-22 06:53:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:42,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,366 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 06:53:42,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:42,367 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash 738424530, now seen corresponding path program 1 times [2020-12-22 06:53:42,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050732400] [2020-12-22 06:53:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:42,448 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 06:53:42,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050732400] [2020-12-22 06:53:42,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:42,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:42,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138951391] [2020-12-22 06:53:42,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:42,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:42,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:42,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:42,451 INFO L87 Difference]: Start difference. First operand 262 states and 365 transitions. Second operand 5 states. [2020-12-22 06:53:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:42,587 INFO L93 Difference]: Finished difference Result 734 states and 1001 transitions. [2020-12-22 06:53:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:42,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:42,591 INFO L225 Difference]: With dead ends: 734 [2020-12-22 06:53:42,591 INFO L226 Difference]: Without dead ends: 478 [2020-12-22 06:53:42,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:53:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-12-22 06:53:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 278. [2020-12-22 06:53:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-12-22 06:53:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2020-12-22 06:53:42,622 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 31 [2020-12-22 06:53:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:42,622 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2020-12-22 06:53:42,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2020-12-22 06:53:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:42,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,623 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 06:53:42,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:42,624 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,624 INFO L82 PathProgramCache]: Analyzing trace with hash 996589968, now seen corresponding path program 1 times [2020-12-22 06:53:42,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470741247] [2020-12-22 06:53:42,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:42,682 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 06:53:42,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470741247] [2020-12-22 06:53:42,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:42,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:42,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506652382] [2020-12-22 06:53:42,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:42,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:42,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:42,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:42,691 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand 3 states. [2020-12-22 06:53:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:42,745 INFO L93 Difference]: Finished difference Result 654 states and 890 transitions. [2020-12-22 06:53:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:42,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:42,748 INFO L225 Difference]: With dead ends: 654 [2020-12-22 06:53:42,748 INFO L226 Difference]: Without dead ends: 382 [2020-12-22 06:53:42,749 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 06:53:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-12-22 06:53:42,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-12-22 06:53:42,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-12-22 06:53:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2020-12-22 06:53:42,784 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 31 [2020-12-22 06:53:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:42,784 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2020-12-22 06:53:42,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2020-12-22 06:53:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:42,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:42,786 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] [2020-12-22 06:53:42,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:42,786 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1116169902, now seen corresponding path program 1 times [2020-12-22 06:53:42,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:42,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193582160] [2020-12-22 06:53:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:42,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:42,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:43,017 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:43,017 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:43,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:43,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:43 BoogieIcfgContainer [2020-12-22 06:53:43,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:43,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:43,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:43,180 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:43,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:40" (3/4) ... [2020-12-22 06:53:43,186 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:43,333 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product51.cil.c-witness.graphml [2020-12-22 06:53:43,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:43,336 INFO L168 Benchmark]: Toolchain (without parser) took 5289.83 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 125.1 MB in the beginning and 73.7 MB in the end (delta: 51.4 MB). Peak memory consumption was 84.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,337 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:43,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 597.72 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.45 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 131.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,338 INFO L168 Benchmark]: Boogie Preprocessor took 93.63 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 129.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,339 INFO L168 Benchmark]: RCFGBuilder took 1106.02 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 67.2 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,339 INFO L168 Benchmark]: TraceAbstraction took 3110.87 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 66.7 MB in the beginning and 86.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,340 INFO L168 Benchmark]: Witness Printer took 154.48 ms. Allocated memory is still 182.5 MB. Free memory was 86.8 MB in the beginning and 73.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:43,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 597.72 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 103.6 MB in the end (delta: 21.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 216.45 ms. Allocated memory is still 151.0 MB. Free memory was 103.4 MB in the beginning and 131.7 MB in the end (delta: -28.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.63 ms. Allocated memory is still 151.0 MB. Free memory was 131.7 MB in the beginning and 129.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1106.02 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 67.2 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3110.87 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 66.7 MB in the beginning and 86.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 11.8 MB. Max. memory is 8.0 GB. * Witness Printer took 154.48 ms. Allocated memory is still 182.5 MB. Free memory was 86.8 MB in the beginning and 73.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 706]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L505] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int cleanupTimeShifts = 4; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L848] int retValue_acc ; [L849] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] tmp = valid_product() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L952] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L750] int tmp ; [L751] int tmp___0 ; [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L755] tmp = isMethaneLevelCritical() [L757] COND TRUE \read(tmp) [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L759] tmp___0 = isPumpRunning() [L761] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L706] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 875 SDtfs, 1188 SDslu, 1284 SDs, 0 SdLazy, 160 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1130 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 11496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...