/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:56:32,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:56:32,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:56:32,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:56:32,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:56:32,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:56:32,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:56:32,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:56:32,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:56:32,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:56:32,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:56:32,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:56:32,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:56:32,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:56:32,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:56:32,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:56:32,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:56:32,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:56:32,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:56:32,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:56:32,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:56:32,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:56:32,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:56:32,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:56:32,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:56:32,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:56:32,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:56:32,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:56:32,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:56:32,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:56:32,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:56:32,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:56:33,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:56:33,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:56:33,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:56:33,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:56:33,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:56:33,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:56:33,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:56:33,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:56:33,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:56:33,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:56:33,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:56:33,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:56:33,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:56:33,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:56:33,068 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:56:33,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:56:33,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:56:33,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:56:33,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:56:33,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:56:33,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:56:33,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:56:33,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:56:33,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:56:33,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:56:33,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:56:33,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:56:33,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:33,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:56:33,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:56:33,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:56:33,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:56:33,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:56:33,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:56:33,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:56:33,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:56:33,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:56:33,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:56:33,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:56:33,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:56:33,567 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:56:33,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-12-22 06:56:33,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbff4a725/245a2319b2074f738ba7f134e59fe356/FLAG0863b6ffc [2020-12-22 06:56:34,328 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:56:34,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2020-12-22 06:56:34,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbff4a725/245a2319b2074f738ba7f134e59fe356/FLAG0863b6ffc [2020-12-22 06:56:34,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbff4a725/245a2319b2074f738ba7f134e59fe356 [2020-12-22 06:56:34,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:56:34,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:56:34,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:34,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:56:34,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:56:34,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:34" (1/1) ... [2020-12-22 06:56:34,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283a542d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:34, skipping insertion in model container [2020-12-22 06:56:34,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:56:34" (1/1) ... [2020-12-22 06:56:34,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:56:34,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:56:35,146 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2020-12-22 06:56:35,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:35,163 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:56:35,259 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2020-12-22 06:56:35,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:56:35,320 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:56:35,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35 WrapperNode [2020-12-22 06:56:35,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:56:35,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:35,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:56:35,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:56:35,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:56:35,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:56:35,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:56:35,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:56:35,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... [2020-12-22 06:56:35,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:56:35,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:56:35,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:56:35,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:56:35,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:56:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:56:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:56:35,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:56:35,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:56:36,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:56:36,468 INFO L299 CfgBuilder]: Removed 96 assume(true) statements. [2020-12-22 06:56:36,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36 BoogieIcfgContainer [2020-12-22 06:56:36,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:56:36,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:56:36,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:56:36,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:56:36,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:56:34" (1/3) ... [2020-12-22 06:56:36,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ea106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:36, skipping insertion in model container [2020-12-22 06:56:36,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:56:35" (2/3) ... [2020-12-22 06:56:36,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ea106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:56:36, skipping insertion in model container [2020-12-22 06:56:36,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36" (3/3) ... [2020-12-22 06:56:36,480 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2020-12-22 06:56:36,487 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:56:36,493 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 06:56:36,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 06:56:36,540 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:56:36,541 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:56:36,541 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:56:36,541 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:56:36,541 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:56:36,541 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:56:36,542 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:56:36,542 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:56:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-12-22 06:56:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 06:56:36,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:36,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:36,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2020-12-22 06:56:36,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:36,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175359973] [2020-12-22 06:56:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:36,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175359973] [2020-12-22 06:56:36,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:36,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:36,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629529415] [2020-12-22 06:56:36,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 06:56:36,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:36,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 06:56:36,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:36,909 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2020-12-22 06:56:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:36,940 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2020-12-22 06:56:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 06:56:36,941 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-22 06:56:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:36,953 INFO L225 Difference]: With dead ends: 150 [2020-12-22 06:56:36,953 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 06:56:36,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 06:56:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 06:56:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-22 06:56:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-22 06:56:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2020-12-22 06:56:37,005 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2020-12-22 06:56:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,006 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2020-12-22 06:56:37,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 06:56:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2020-12-22 06:56:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 06:56:37,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:37,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:56:37,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2020-12-22 06:56:37,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099609456] [2020-12-22 06:56:37,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:37,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099609456] [2020-12-22 06:56:37,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:56:37,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963423887] [2020-12-22 06:56:37,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:37,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,137 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2020-12-22 06:56:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,152 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2020-12-22 06:56:37,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:37,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-22 06:56:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,154 INFO L225 Difference]: With dead ends: 74 [2020-12-22 06:56:37,154 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 06:56:37,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 06:56:37,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 06:56:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 06:56:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2020-12-22 06:56:37,180 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2020-12-22 06:56:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,180 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2020-12-22 06:56:37,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2020-12-22 06:56:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 06:56:37,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:37,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:56:37,182 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2020-12-22 06:56:37,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418475433] [2020-12-22 06:56:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:37,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418475433] [2020-12-22 06:56:37,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:37,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703095464] [2020-12-22 06:56:37,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:56:37,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:56:37,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:56:37,358 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 6 states. [2020-12-22 06:56:37,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,559 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2020-12-22 06:56:37,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:56:37,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 06:56:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,561 INFO L225 Difference]: With dead ends: 62 [2020-12-22 06:56:37,562 INFO L226 Difference]: Without dead ends: 34 [2020-12-22 06:56:37,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-22 06:56:37,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-22 06:56:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-22 06:56:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2020-12-22 06:56:37,569 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2020-12-22 06:56:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,569 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2020-12-22 06:56:37,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:56:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-12-22 06:56:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 06:56:37,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,571 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] [2020-12-22 06:56:37,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:56:37,571 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2020-12-22 06:56:37,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833729098] [2020-12-22 06:56:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:37,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833729098] [2020-12-22 06:56:37,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:56:37,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995962073] [2020-12-22 06:56:37,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:56:37,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:56:37,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,642 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2020-12-22 06:56:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,681 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2020-12-22 06:56:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:56:37,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 06:56:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,683 INFO L225 Difference]: With dead ends: 83 [2020-12-22 06:56:37,683 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 06:56:37,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:56:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 06:56:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-12-22 06:56:37,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-22 06:56:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2020-12-22 06:56:37,705 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2020-12-22 06:56:37,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,706 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2020-12-22 06:56:37,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:56:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2020-12-22 06:56:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 06:56:37,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,707 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] [2020-12-22 06:56:37,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:56:37,708 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2020-12-22 06:56:37,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119871305] [2020-12-22 06:56:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:37,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119871305] [2020-12-22 06:56:37,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:37,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:56:37,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697784734] [2020-12-22 06:56:37,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:56:37,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:37,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:56:37,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:37,803 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2020-12-22 06:56:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:37,881 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2020-12-22 06:56:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:56:37,882 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-12-22 06:56:37,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:37,883 INFO L225 Difference]: With dead ends: 139 [2020-12-22 06:56:37,884 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 06:56:37,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:56:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 06:56:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2020-12-22 06:56:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 06:56:37,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2020-12-22 06:56:37,894 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2020-12-22 06:56:37,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:37,894 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2020-12-22 06:56:37,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:56:37,895 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2020-12-22 06:56:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 06:56:37,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:37,896 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] [2020-12-22 06:56:37,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:56:37,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:37,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:37,898 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2020-12-22 06:56:37,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:37,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771150264] [2020-12-22 06:56:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:38,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771150264] [2020-12-22 06:56:38,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:56:38,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986320887] [2020-12-22 06:56:38,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:38,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:38,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:38,097 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2020-12-22 06:56:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,723 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2020-12-22 06:56:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:56:38,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 06:56:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,730 INFO L225 Difference]: With dead ends: 347 [2020-12-22 06:56:38,730 INFO L226 Difference]: Without dead ends: 297 [2020-12-22 06:56:38,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:56:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-12-22 06:56:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2020-12-22 06:56:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-22 06:56:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2020-12-22 06:56:38,795 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2020-12-22 06:56:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,795 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2020-12-22 06:56:38,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2020-12-22 06:56:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:56:38,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:38,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:56:38,805 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1650264504, now seen corresponding path program 1 times [2020-12-22 06:56:38,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205935863] [2020-12-22 06:56:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 06:56:38,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205935863] [2020-12-22 06:56:38,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:56:38,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:56:38,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336193259] [2020-12-22 06:56:38,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:56:38,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:56:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:56:38,904 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 4 states. [2020-12-22 06:56:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:38,958 INFO L93 Difference]: Finished difference Result 299 states and 406 transitions. [2020-12-22 06:56:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:56:38,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-12-22 06:56:38,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:38,961 INFO L225 Difference]: With dead ends: 299 [2020-12-22 06:56:38,961 INFO L226 Difference]: Without dead ends: 165 [2020-12-22 06:56:38,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:56:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-12-22 06:56:38,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2020-12-22 06:56:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-22 06:56:38,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2020-12-22 06:56:38,987 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2020-12-22 06:56:38,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:38,987 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2020-12-22 06:56:38,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:56:38,988 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2020-12-22 06:56:38,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:56:38,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:38,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:38,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:56:38,990 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:38,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:38,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1693810360, now seen corresponding path program 1 times [2020-12-22 06:56:38,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:38,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392429159] [2020-12-22 06:56:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392429159] [2020-12-22 06:56:39,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24198480] [2020-12-22 06:56:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:56:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:56:39,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 06:56:39,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:56:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:56:39,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:56:39,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-12-22 06:56:39,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823903454] [2020-12-22 06:56:39,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:56:39,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:56:39,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:56:39,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:56:39,606 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 8 states. [2020-12-22 06:56:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:56:39,899 INFO L93 Difference]: Finished difference Result 412 states and 570 transitions. [2020-12-22 06:56:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:56:39,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-12-22 06:56:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:56:39,904 INFO L225 Difference]: With dead ends: 412 [2020-12-22 06:56:39,904 INFO L226 Difference]: Without dead ends: 321 [2020-12-22 06:56:39,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:56:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-12-22 06:56:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 159. [2020-12-22 06:56:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-12-22 06:56:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2020-12-22 06:56:39,941 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2020-12-22 06:56:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:56:39,943 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2020-12-22 06:56:39,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:56:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2020-12-22 06:56:39,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:56:39,951 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:56:39,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:56:40,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-22 06:56:40,167 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:56:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:56:40,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1880584764, now seen corresponding path program 2 times [2020-12-22 06:56:40,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:56:40,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029103803] [2020-12-22 06:56:40,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:56:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:40,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 06:56:40,308 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 06:56:40,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 06:56:40,363 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 06:56:40,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:56:40,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 06:56:40 BoogieIcfgContainer [2020-12-22 06:56:40,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 06:56:40,585 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 06:56:40,585 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 06:56:40,586 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 06:56:40,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:56:36" (3/4) ... [2020-12-22 06:56:40,590 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 06:56:40,762 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product33.cil.c-witness.graphml [2020-12-22 06:56:40,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 06:56:40,765 INFO L168 Benchmark]: Toolchain (without parser) took 6128.56 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.6 MB in the beginning and 63.0 MB in the end (delta: 62.6 MB). Peak memory consumption was 94.3 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,766 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 06:56:40,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 680.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 105.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.03 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 102.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,768 INFO L168 Benchmark]: Boogie Preprocessor took 40.87 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 100.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,768 INFO L168 Benchmark]: RCFGBuilder took 1035.17 ms. Allocated memory is still 151.0 MB. Free memory was 100.0 MB in the beginning and 81.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,772 INFO L168 Benchmark]: TraceAbstraction took 4112.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 81.2 MB in the beginning and 86.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,773 INFO L168 Benchmark]: Witness Printer took 177.26 ms. Allocated memory is still 181.4 MB. Free memory was 86.6 MB in the beginning and 63.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-12-22 06:56:40,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 680.81 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 105.2 MB in the end (delta: 20.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 71.03 ms. Allocated memory is still 151.0 MB. Free memory was 104.9 MB in the beginning and 102.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.87 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 100.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1035.17 ms. Allocated memory is still 151.0 MB. Free memory was 100.0 MB in the beginning and 81.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4112.57 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 81.2 MB in the beginning and 86.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. * Witness Printer took 177.26 ms. Allocated memory is still 181.4 MB. Free memory was 86.6 MB in the beginning and 63.0 MB in the end (delta: 23.7 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L617] int waterLevel = 1; [L618] int methaneLevelCritical = 0; [L714] int pumpRunning = 0; [L715] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L635] COND TRUE waterLevel < 2 [L636] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] COND TRUE ! pumpRunning [L848] int retValue_acc ; [L849] int tmp ; [L850] int tmp___0 ; [L697] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] COND FALSE !(waterLevel < 2) [L704] retValue_acc = 0 [L705] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L854] tmp = isHighWaterSensorDry() [L856] COND FALSE !(\read(tmp)) [L859] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L861] retValue_acc = tmp___0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] tmp = isHighWaterLevel() [L758] COND TRUE \read(tmp) [L779] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L882] tmp = getWaterLevel() [L884] COND TRUE tmp == 0 [L803] int retValue_acc ; [L806] retValue_acc = pumpRunning [L807] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L886] tmp___0 = isPumpRunning() [L888] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L871] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 554 SDtfs, 877 SDslu, 1101 SDs, 0 SdLazy, 201 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, 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, 8 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 16788 SizeOfPredicates, 3 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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...