/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_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:53:17,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:53:17,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:53:17,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:53:17,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:53:17,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:53:17,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:53:17,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:53:17,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:53:17,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:53:17,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:53:17,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:53:17,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:53:17,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:53:17,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:53:17,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:53:17,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:53:17,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:53:17,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:53:17,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:53:17,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:53:17,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:53:17,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:53:17,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:53:17,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:53:17,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:53:17,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:53:17,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:53:17,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:53:17,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:53:17,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:53:17,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:53:17,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:53:17,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:53:17,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:53:17,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:53:17,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:53:17,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:53:17,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:53:17,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:53:17,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:53:17,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:53:17,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:53:17,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:53:17,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:53:17,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:53:17,402 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:53:17,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:53:17,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:53:17,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:53:17,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:53:17,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:53:17,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:53:17,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:53:17,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:53:17,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:53:17,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:53:17,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:53:17,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:53:17,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:53:17,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:53:17,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:53:17,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:53:17,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:53:17,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:53:17,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:53:17,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:53:17,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:53:17,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:53:17,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:53:17,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:53:17,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:53:17,859 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:53:17,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2020-12-22 06:53:17,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bddd60/870c5db5a54c4b0aac4425bbd5eb3ed3/FLAGc040db7eb [2020-12-22 06:53:18,675 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:53:18,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2020-12-22 06:53:18,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bddd60/870c5db5a54c4b0aac4425bbd5eb3ed3/FLAGc040db7eb [2020-12-22 06:53:18,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/424bddd60/870c5db5a54c4b0aac4425bbd5eb3ed3 [2020-12-22 06:53:18,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:53:18,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:53:18,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:18,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:53:18,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:53:18,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:18" (1/1) ... [2020-12-22 06:53:18,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218daa3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:18, skipping insertion in model container [2020-12-22 06:53:18,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:53:18" (1/1) ... [2020-12-22 06:53:18,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:53:19,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:53:19,396 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_product38.cil.c[16515,16528] [2020-12-22 06:53:19,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:19,419 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:53:19,533 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_product38.cil.c[16515,16528] [2020-12-22 06:53:19,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:53:19,579 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:53:19,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19 WrapperNode [2020-12-22 06:53:19,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:53:19,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:19,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:53:19,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:53:19,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:53:19,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:53:19,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:53:19,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:53:19,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (1/1) ... [2020-12-22 06:53:19,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:53:19,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:53:19,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:53:19,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:53:19,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (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 06:53:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:53:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:53:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:53:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:53:20,845 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:53:20,846 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2020-12-22 06:53:20,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20 BoogieIcfgContainer [2020-12-22 06:53:20,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:53:20,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:53:20,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:53:20,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:53:20,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:53:18" (1/3) ... [2020-12-22 06:53:20,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c7231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:20, skipping insertion in model container [2020-12-22 06:53:20,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:53:19" (2/3) ... [2020-12-22 06:53:20,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c7231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:53:20, skipping insertion in model container [2020-12-22 06:53:20,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20" (3/3) ... [2020-12-22 06:53:20,862 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-12-22 06:53:20,869 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:53:20,877 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:53:20,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:53:20,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:53:20,924 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:53:20,924 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:53:20,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:53:20,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:53:20,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:53:20,924 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:53:20,924 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:53:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-12-22 06:53:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:53:20,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:20,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:53:20,950 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2020-12-22 06:53:20,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:20,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520583856] [2020-12-22 06:53:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,275 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 06:53:21,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520583856] [2020-12-22 06:53:21,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:21,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878427294] [2020-12-22 06:53:21,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:53:21,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:53:21,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:53:21,301 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2020-12-22 06:53:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,336 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2020-12-22 06:53:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:53:21,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:53:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,350 INFO L225 Difference]: With dead ends: 216 [2020-12-22 06:53:21,350 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 06:53:21,354 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 06:53:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 06:53:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-22 06:53:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-22 06:53:21,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2020-12-22 06:53:21,431 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2020-12-22 06:53:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,432 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2020-12-22 06:53:21,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:53:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2020-12-22 06:53:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:53:21,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,436 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 06:53:21,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:53:21,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2020-12-22 06:53:21,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835213451] [2020-12-22 06:53:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,582 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 06:53:21,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835213451] [2020-12-22 06:53:21,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:21,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102585918] [2020-12-22 06:53:21,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:21,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:21,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:21,586 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2020-12-22 06:53:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,601 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2020-12-22 06:53:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:21,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:53:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,603 INFO L225 Difference]: With dead ends: 107 [2020-12-22 06:53:21,603 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 06:53:21,604 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 06:53:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 06:53:21,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 06:53:21,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 06:53:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2020-12-22 06:53:21,610 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2020-12-22 06:53:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,611 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2020-12-22 06:53:21,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2020-12-22 06:53:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:53:21,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,615 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 06:53:21,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:53:21,615 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2020-12-22 06:53:21,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307407922] [2020-12-22 06:53:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,762 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 06:53:21,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307407922] [2020-12-22 06:53:21,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:53:21,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744193200] [2020-12-22 06:53:21,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:21,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:21,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:21,769 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 3 states. [2020-12-22 06:53:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,801 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-12-22 06:53:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:21,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 06:53:21,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,803 INFO L225 Difference]: With dead ends: 84 [2020-12-22 06:53:21,803 INFO L226 Difference]: Without dead ends: 45 [2020-12-22 06:53:21,804 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 06:53:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-22 06:53:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-12-22 06:53:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 06:53:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-12-22 06:53:21,809 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2020-12-22 06:53:21,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,810 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-12-22 06:53:21,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-12-22 06:53:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 06:53:21,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,811 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 06:53:21,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:53:21,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2020-12-22 06:53:21,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749515770] [2020-12-22 06:53:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:21,876 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 06:53:21,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749515770] [2020-12-22 06:53:21,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:21,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:21,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699683443] [2020-12-22 06:53:21,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:21,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:21,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:21,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:21,880 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2020-12-22 06:53:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:21,926 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2020-12-22 06:53:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:21,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 06:53:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:21,928 INFO L225 Difference]: With dead ends: 105 [2020-12-22 06:53:21,928 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 06:53:21,929 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 06:53:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 06:53:21,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-12-22 06:53:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 06:53:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2020-12-22 06:53:21,945 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2020-12-22 06:53:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:21,948 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2020-12-22 06:53:21,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:21,949 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2020-12-22 06:53:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:21,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:21,950 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 06:53:21,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:53:21,950 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:21,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1827782978, now seen corresponding path program 1 times [2020-12-22 06:53:21,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:21,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440185955] [2020-12-22 06:53:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,098 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 06:53:22,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440185955] [2020-12-22 06:53:22,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:22,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102743733] [2020-12-22 06:53:22,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,104 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2020-12-22 06:53:22,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,253 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2020-12-22 06:53:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:22,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,255 INFO L225 Difference]: With dead ends: 171 [2020-12-22 06:53:22,255 INFO L226 Difference]: Without dead ends: 113 [2020-12-22 06:53:22,256 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 06:53:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-22 06:53:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2020-12-22 06:53:22,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-22 06:53:22,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-12-22 06:53:22,266 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2020-12-22 06:53:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,267 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-12-22 06:53:22,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-12-22 06:53:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:53:22,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,269 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 06:53:22,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:53:22,269 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2020-12-22 06:53:22,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502276680] [2020-12-22 06:53:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,340 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 06:53:22,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502276680] [2020-12-22 06:53:22,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:22,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260603975] [2020-12-22 06:53:22,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,344 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2020-12-22 06:53:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,446 INFO L93 Difference]: Finished difference Result 344 states and 483 transitions. [2020-12-22 06:53:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:53:22,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 06:53:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,450 INFO L225 Difference]: With dead ends: 344 [2020-12-22 06:53:22,450 INFO L226 Difference]: Without dead ends: 280 [2020-12-22 06:53:22,451 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 06:53:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-12-22 06:53:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 128. [2020-12-22 06:53:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 06:53:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2020-12-22 06:53:22,485 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 30 [2020-12-22 06:53:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,485 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2020-12-22 06:53:22,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2020-12-22 06:53:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:22,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,489 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 06:53:22,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:53:22,490 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1506496567, now seen corresponding path program 1 times [2020-12-22 06:53:22,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504469744] [2020-12-22 06:53:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,596 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 06:53:22,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504469744] [2020-12-22 06:53:22,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:53:22,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996911613] [2020-12-22 06:53:22,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,599 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand 5 states. [2020-12-22 06:53:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,709 INFO L93 Difference]: Finished difference Result 366 states and 502 transitions. [2020-12-22 06:53:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:53:22,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:22,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,712 INFO L225 Difference]: With dead ends: 366 [2020-12-22 06:53:22,713 INFO L226 Difference]: Without dead ends: 364 [2020-12-22 06:53:22,713 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 06:53:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-12-22 06:53:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 128. [2020-12-22 06:53:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-22 06:53:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2020-12-22 06:53:22,731 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 31 [2020-12-22 06:53:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,731 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2020-12-22 06:53:22,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2020-12-22 06:53:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:22,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,733 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 06:53:22,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:53:22,734 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1549041486, now seen corresponding path program 1 times [2020-12-22 06:53:22,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125754396] [2020-12-22 06:53:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,789 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 06:53:22,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125754396] [2020-12-22 06:53:22,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:53:22,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053404637] [2020-12-22 06:53:22,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:53:22,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:53:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:53:22,792 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 5 states. [2020-12-22 06:53:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:22,874 INFO L93 Difference]: Finished difference Result 346 states and 466 transitions. [2020-12-22 06:53:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:53:22,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-22 06:53:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:22,877 INFO L225 Difference]: With dead ends: 346 [2020-12-22 06:53:22,877 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 06:53:22,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:53:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 06:53:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 136. [2020-12-22 06:53:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-12-22 06:53:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 182 transitions. [2020-12-22 06:53:22,894 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 182 transitions. Word has length 31 [2020-12-22 06:53:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:22,894 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 182 transitions. [2020-12-22 06:53:22,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:53:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 182 transitions. [2020-12-22 06:53:22,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:53:22,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:22,895 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 06:53:22,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:53:22,896 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:22,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1290876048, now seen corresponding path program 1 times [2020-12-22 06:53:22,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:22,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761508119] [2020-12-22 06:53:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:53:22,954 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 06:53:22,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761508119] [2020-12-22 06:53:22,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:53:22,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:53:22,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836335770] [2020-12-22 06:53:22,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:53:22,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:53:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:53:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:53:22,957 INFO L87 Difference]: Start difference. First operand 136 states and 182 transitions. Second operand 3 states. [2020-12-22 06:53:23,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:53:23,007 INFO L93 Difference]: Finished difference Result 316 states and 422 transitions. [2020-12-22 06:53:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:53:23,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:53:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:53:23,009 INFO L225 Difference]: With dead ends: 316 [2020-12-22 06:53:23,009 INFO L226 Difference]: Without dead ends: 186 [2020-12-22 06:53:23,010 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 06:53:23,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-12-22 06:53:23,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2020-12-22 06:53:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-22 06:53:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 242 transitions. [2020-12-22 06:53:23,032 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 242 transitions. Word has length 31 [2020-12-22 06:53:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:53:23,033 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 242 transitions. [2020-12-22 06:53:23,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:53:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 242 transitions. [2020-12-22 06:53:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 06:53:23,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:53:23,040 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 06:53:23,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:53:23,041 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:53:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:53:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash 891331378, now seen corresponding path program 1 times [2020-12-22 06:53:23,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:53:23,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865143398] [2020-12-22 06:53:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:53:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:23,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:53:23,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:53:23,262 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:53:23,262 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:53:23,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:53:23,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:53:23 BoogieIcfgContainer [2020-12-22 06:53:23,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:53:23,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:53:23,375 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:53:23,375 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:53:23,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:53:20" (3/4) ... [2020-12-22 06:53:23,378 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:53:23,482 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec1_product38.cil.c-witness.graphml [2020-12-22 06:53:23,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:53:23,485 INFO L168 Benchmark]: Toolchain (without parser) took 4510.47 ms. Allocated memory was 168.8 MB in the beginning and 213.9 MB in the end (delta: 45.1 MB). Free memory was 123.4 MB in the beginning and 140.5 MB in the end (delta: -17.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,485 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 168.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:53:23,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.40 ms. Allocated memory is still 168.8 MB. Free memory was 123.1 MB in the beginning and 144.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.95 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 141.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,487 INFO L168 Benchmark]: Boogie Preprocessor took 88.85 ms. Allocated memory is still 168.8 MB. Free memory was 141.0 MB in the beginning and 138.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,488 INFO L168 Benchmark]: RCFGBuilder took 1103.68 ms. Allocated memory is still 168.8 MB. Free memory was 138.2 MB in the beginning and 133.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,489 INFO L168 Benchmark]: TraceAbstraction took 2523.72 ms. Allocated memory was 168.8 MB in the beginning and 213.9 MB in the end (delta: 45.1 MB). Free memory was 132.6 MB in the beginning and 154.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,489 INFO L168 Benchmark]: Witness Printer took 107.94 ms. Allocated memory is still 213.9 MB. Free memory was 154.1 MB in the beginning and 141.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 06:53:23,493 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 168.8 MB. Free memory is still 141.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 601.40 ms. Allocated memory is still 168.8 MB. Free memory was 123.1 MB in the beginning and 144.5 MB in the end (delta: -21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 73.95 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 141.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.85 ms. Allocated memory is still 168.8 MB. Free memory was 141.0 MB in the beginning and 138.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1103.68 ms. Allocated memory is still 168.8 MB. Free memory was 138.2 MB in the beginning and 133.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2523.72 ms. Allocated memory was 168.8 MB in the beginning and 213.9 MB in the end (delta: 45.1 MB). Free memory was 132.6 MB in the beginning and 154.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Witness Printer took 107.94 ms. Allocated memory is still 213.9 MB. Free memory was 154.1 MB in the beginning and 141.0 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 839]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L379] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L845] int waterLevel = 1; [L846] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L769] int splverifierCounter ; [L770] int tmp ; [L771] int tmp___0 ; [L772] int tmp___1 ; [L773] int tmp___2 ; [L776] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L780] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] tmp = __VERIFIER_nondet_int() [L788] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L863] COND TRUE waterLevel < 2 [L864] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L796] tmp___0 = __VERIFIER_nondet_int() [L798] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L875] COND FALSE !(\read(methaneLevelCritical)) [L878] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L806] tmp___2 = __VERIFIER_nondet_int() [L808] COND TRUE \read(tmp___2) [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L589] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE \read(systemActive) [L644] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L647] COND FALSE !(\read(pumpRunning)) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND TRUE ! pumpRunning [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L925] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L928] COND FALSE !(waterLevel < 2) [L932] retValue_acc = 0 [L933] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L623] tmp = isHighWaterLevel() [L625] COND TRUE \read(tmp) [L672] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L185] int tmp ; [L186] int tmp___0 ; [L884] int retValue_acc ; [L887] retValue_acc = methaneLevelCritical [L888] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L190] tmp = isMethaneLevelCritical() [L192] COND TRUE \read(tmp) [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L194] tmp___0 = isPumpRunning() [L196] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L839] 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, 111 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 785 SDtfs, 950 SDslu, 979 SDs, 0 SdLazy, 149 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 521 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 11625 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...