/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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 09:19:50,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 09:19:50,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 09:19:50,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 09:19:50,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 09:19:50,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 09:19:50,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 09:19:50,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 09:19:50,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 09:19:50,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 09:19:50,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 09:19:50,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 09:19:50,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 09:19:50,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 09:19:50,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 09:19:50,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 09:19:50,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 09:19:50,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 09:19:50,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 09:19:50,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 09:19:50,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 09:19:50,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 09:19:50,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 09:19:50,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 09:19:50,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 09:19:50,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 09:19:50,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 09:19:50,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 09:19:50,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 09:19:50,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 09:19:50,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 09:19:50,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 09:19:50,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 09:19:50,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 09:19:50,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 09:19:50,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 09:19:50,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 09:19:50,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 09:19:50,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 09:19:50,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 09:19:50,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 09:19:50,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 09:19:50,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 09:19:50,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 09:19:50,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 09:19:50,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 09:19:50,497 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 09:19:50,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 09:19:50,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 09:19:50,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 09:19:50,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 09:19:50,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 09:19:50,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 09:19:50,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 09:19:50,499 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 09:19:50,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 09:19:50,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 09:19:50,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 09:19:50,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 09:19:50,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 09:19:50,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 09:19:50,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 09:19:50,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 09:19:50,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 09:19:50,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 09:19:50,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 09:19:50,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 09:19:50,503 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 09:19:51,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 09:19:51,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 09:19:51,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 09:19:51,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 09:19:51,034 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 09:19:51,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-12-23 09:19:51,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e891441e/e373262cca8648408a42e104e69fb5b4/FLAGab824110d [2020-12-23 09:19:51,819 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 09:19:51,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2020-12-23 09:19:51,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e891441e/e373262cca8648408a42e104e69fb5b4/FLAGab824110d [2020-12-23 09:19:52,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/4e891441e/e373262cca8648408a42e104e69fb5b4 [2020-12-23 09:19:52,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 09:19:52,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 09:19:52,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 09:19:52,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 09:19:52,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 09:19:52,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3942ba70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52, skipping insertion in model container [2020-12-23 09:19:52,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 09:19:52,198 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~splverifierCounter~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~pumpRunning~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pumpRunning~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~2,] left hand side expression in assignment: lhs: VariableLHS[~systemActive~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~systemActive~0,GLOBAL] [2020-12-23 09:19:52,474 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5076,5089] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp2~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~3,] left hand side expression in assignment: lhs: VariableLHS[~waterLevel~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~waterLevel~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~methaneLevelCritical~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~methaneLevelCritical~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~5,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~6,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~6,] left hand side expression in assignment: lhs: VariableLHS[~excep~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~5,] left hand side expression in assignment: lhs: VariableLHS[~cf~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_15~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_15~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_16~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_17~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_19~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_15~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~6,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~1,] left hand side expression in assignment: address: IdentifierExpression[~mem_17~1,] left hand side expression in assignment: lhs: VariableLHS[~excep~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~2,] left hand side expression in assignment: lhs: VariableLHS[~cf~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp15~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~2,] left hand side expression in assignment: lhs: VariableLHS[~tmp~7,] left hand side expression in assignment: lhs: VariableLHS[~new~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~2,] left hand side expression in assignment: address: IdentifierExpression[~mem_18~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~2,] left hand side expression in assignment: address: IdentifierExpression[~mem_19~2,] left hand side expression in assignment: lhs: VariableLHS[~head~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_20~0,] left hand side expression in assignment: lhs: VariableLHS[~next~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_21~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~3,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~count,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp15~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp16~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_22~0,] left hand side expression in assignment: lhs: VariableLHS[~head~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mem_23~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp17~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~mem_24~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp4~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_12~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_13~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~8,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp4~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_12~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~4,] left hand side expression in assignment: lhs: VariableLHS[~mem_13~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~5,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~5,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~9,] left hand side expression in assignment: lhs: VariableLHS[~tmp~8,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~2,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~10,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~11,] [2020-12-23 09:19:52,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:19:52,582 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~splverifierCounter~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~2,] left hand side expression in assignment: lhs: VariableLHS[~pumpRunning~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~pumpRunning~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~3,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~1,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~2,] left hand side expression in assignment: lhs: VariableLHS[~systemActive~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~systemActive~0,GLOBAL] [2020-12-23 09:19:52,617 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5076,5089] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp2~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~3,] left hand side expression in assignment: lhs: VariableLHS[~waterLevel~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~waterLevel~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~methaneLevelCritical~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~methaneLevelCritical~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~5,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~6,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~6,] left hand side expression in assignment: lhs: VariableLHS[~excep~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~5,] left hand side expression in assignment: lhs: VariableLHS[~cf~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_15~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_15~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_16~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_17~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~0,] left hand side expression in assignment: address: IdentifierExpression[~mem_19~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_15~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~1,] left hand side expression in assignment: lhs: VariableLHS[~tmp~6,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~1,] left hand side expression in assignment: address: IdentifierExpression[~mem_17~1,] left hand side expression in assignment: lhs: VariableLHS[~excep~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~1,] left hand side expression in assignment: lhs: VariableLHS[~mem_16~2,] left hand side expression in assignment: lhs: VariableLHS[~cf~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_17~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp15~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~1,] left hand side expression in assignment: lhs: VariableLHS[~cf~2,] left hand side expression in assignment: lhs: VariableLHS[~tmp~7,] left hand side expression in assignment: lhs: VariableLHS[~new~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_18~2,] left hand side expression in assignment: address: IdentifierExpression[~mem_18~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_19~2,] left hand side expression in assignment: address: IdentifierExpression[~mem_19~2,] left hand side expression in assignment: lhs: VariableLHS[~head~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp12~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp13~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_20~0,] left hand side expression in assignment: lhs: VariableLHS[~next~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_21~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp14~3,] left hand side expression in assignment: lhs: VariableLHS[~temp~0,] left hand side expression in assignment: lhs: VariableLHS[~count,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp15~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp16~0,] left hand side expression in assignment: lhs: VariableLHS[~mem_22~0,] left hand side expression in assignment: lhs: VariableLHS[~head~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mem_23~0,] left hand side expression in assignment: lhs: VariableLHS[~excep~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp17~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~mem_24~0,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~7,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp4~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~2,] left hand side expression in assignment: lhs: VariableLHS[~mem_12~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~2,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_13~0,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~4,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~8,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp4~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp5~3,] left hand side expression in assignment: lhs: VariableLHS[~mem_12~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp6~3,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp7~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp8~4,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp9~4,] left hand side expression in assignment: lhs: VariableLHS[~mem_13~1,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp10~5,] left hand side expression in assignment: lhs: VariableLHS[~__cil_tmp11~5,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~9,] left hand side expression in assignment: lhs: VariableLHS[~tmp~8,] left hand side expression in assignment: lhs: VariableLHS[~tmp___0~2,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~10,] left hand side expression in assignment: lhs: VariableLHS[~retValue_acc~11,] [2020-12-23 09:19:52,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 09:19:52,739 INFO L208 MainTranslator]: Completed translation [2020-12-23 09:19:52,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52 WrapperNode [2020-12-23 09:19:52,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 09:19:52,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 09:19:52,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 09:19:52,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 09:19:52,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 09:19:52,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 09:19:52,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 09:19:52,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 09:19:52,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... [2020-12-23 09:19:52,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 09:19:52,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 09:19:52,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 09:19:52,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 09:19:52,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:19:53,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 09:19:53,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 09:19:53,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 09:19:53,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 09:19:54,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 09:19:54,547 INFO L299 CfgBuilder]: Removed 162 assume(true) statements. [2020-12-23 09:19:54,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:19:54 BoogieIcfgContainer [2020-12-23 09:19:54,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 09:19:54,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 09:19:54,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 09:19:54,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 09:19:54,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 09:19:52" (1/3) ... [2020-12-23 09:19:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8449b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:19:54, skipping insertion in model container [2020-12-23 09:19:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 09:19:52" (2/3) ... [2020-12-23 09:19:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8449b7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 09:19:54, skipping insertion in model container [2020-12-23 09:19:54,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:19:54" (3/3) ... [2020-12-23 09:19:54,560 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2020-12-23 09:19:54,567 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 09:19:54,572 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 09:19:54,593 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 09:19:54,622 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 09:19:54,623 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 09:19:54,623 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 09:19:54,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 09:19:54,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 09:19:54,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 09:19:54,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 09:19:54,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 09:19:54,651 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2020-12-23 09:19:54,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 09:19:54,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:54,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:54,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:54,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2020-12-23 09:19:54,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:54,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860018122] [2020-12-23 09:19:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:55,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860018122] [2020-12-23 09:19:55,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:55,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:19:55,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842766217] [2020-12-23 09:19:55,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 09:19:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 09:19:55,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 09:19:55,058 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2020-12-23 09:19:55,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:55,101 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2020-12-23 09:19:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 09:19:55,103 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-23 09:19:55,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:55,115 INFO L225 Difference]: With dead ends: 220 [2020-12-23 09:19:55,115 INFO L226 Difference]: Without dead ends: 109 [2020-12-23 09:19:55,119 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 [2020-12-23 09:19:55,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-23 09:19:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-23 09:19:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-23 09:19:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2020-12-23 09:19:55,166 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2020-12-23 09:19:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:55,167 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2020-12-23 09:19:55,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 09:19:55,167 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2020-12-23 09:19:55,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 09:19:55,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:55,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:55,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 09:19:55,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2020-12-23 09:19:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:55,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091742121] [2020-12-23 09:19:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:55,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091742121] [2020-12-23 09:19:55,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:55,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:19:55,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44097693] [2020-12-23 09:19:55,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:19:55,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:55,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:19:55,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:19:55,299 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2020-12-23 09:19:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:55,314 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2020-12-23 09:19:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:19:55,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 09:19:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:55,316 INFO L225 Difference]: With dead ends: 109 [2020-12-23 09:19:55,316 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 09:19:55,318 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 [2020-12-23 09:19:55,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 09:19:55,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-23 09:19:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-23 09:19:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2020-12-23 09:19:55,324 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2020-12-23 09:19:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:55,325 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2020-12-23 09:19:55,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:19:55,325 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2020-12-23 09:19:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 09:19:55,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:55,326 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] [2020-12-23 09:19:55,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 09:19:55,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2020-12-23 09:19:55,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:55,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000907868] [2020-12-23 09:19:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:55,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000907868] [2020-12-23 09:19:55,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:55,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:19:55,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708827863] [2020-12-23 09:19:55,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:19:55,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:19:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:19:55,420 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 3 states. [2020-12-23 09:19:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:55,489 INFO L93 Difference]: Finished difference Result 129 states and 192 transitions. [2020-12-23 09:19:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:19:55,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-23 09:19:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:55,492 INFO L225 Difference]: With dead ends: 129 [2020-12-23 09:19:55,492 INFO L226 Difference]: Without dead ends: 88 [2020-12-23 09:19:55,498 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 [2020-12-23 09:19:55,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-23 09:19:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-12-23 09:19:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-23 09:19:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 125 transitions. [2020-12-23 09:19:55,512 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 125 transitions. Word has length 22 [2020-12-23 09:19:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:55,512 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 125 transitions. [2020-12-23 09:19:55,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:19:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 125 transitions. [2020-12-23 09:19:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-23 09:19:55,514 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:55,514 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] [2020-12-23 09:19:55,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 09:19:55,515 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:55,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2020-12-23 09:19:55,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:55,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840289239] [2020-12-23 09:19:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:55,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840289239] [2020-12-23 09:19:55,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:55,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 09:19:55,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300304712] [2020-12-23 09:19:55,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:19:55,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:19:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:19:55,633 INFO L87 Difference]: Start difference. First operand 84 states and 125 transitions. Second operand 3 states. [2020-12-23 09:19:55,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:55,693 INFO L93 Difference]: Finished difference Result 203 states and 306 transitions. [2020-12-23 09:19:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:19:55,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-23 09:19:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:55,695 INFO L225 Difference]: With dead ends: 203 [2020-12-23 09:19:55,695 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 09:19:55,696 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 [2020-12-23 09:19:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 09:19:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-12-23 09:19:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-23 09:19:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 179 transitions. [2020-12-23 09:19:55,712 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 179 transitions. Word has length 24 [2020-12-23 09:19:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:55,713 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 179 transitions. [2020-12-23 09:19:55,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:19:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 179 transitions. [2020-12-23 09:19:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-23 09:19:55,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:55,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:55,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 09:19:55,715 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2020-12-23 09:19:55,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:55,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556501469] [2020-12-23 09:19:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:55,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556501469] [2020-12-23 09:19:55,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:55,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:19:55,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991068597] [2020-12-23 09:19:55,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:19:55,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:19:55,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:19:55,817 INFO L87 Difference]: Start difference. First operand 123 states and 179 transitions. Second operand 5 states. [2020-12-23 09:19:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:55,930 INFO L93 Difference]: Finished difference Result 439 states and 645 transitions. [2020-12-23 09:19:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:19:55,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-12-23 09:19:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:55,934 INFO L225 Difference]: With dead ends: 439 [2020-12-23 09:19:55,934 INFO L226 Difference]: Without dead ends: 322 [2020-12-23 09:19:55,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:19:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-12-23 09:19:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 206. [2020-12-23 09:19:55,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-23 09:19:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 290 transitions. [2020-12-23 09:19:55,965 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 290 transitions. Word has length 25 [2020-12-23 09:19:55,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:55,968 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 290 transitions. [2020-12-23 09:19:55,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:19:55,969 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 290 transitions. [2020-12-23 09:19:55,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 09:19:55,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:55,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:55,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 09:19:55,971 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:55,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:55,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1889894491, now seen corresponding path program 1 times [2020-12-23 09:19:55,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:55,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343755769] [2020-12-23 09:19:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:56,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343755769] [2020-12-23 09:19:56,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:56,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:19:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471148781] [2020-12-23 09:19:56,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:19:56,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:19:56,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:19:56,071 INFO L87 Difference]: Start difference. First operand 206 states and 290 transitions. Second operand 5 states. [2020-12-23 09:19:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:56,277 INFO L93 Difference]: Finished difference Result 438 states and 630 transitions. [2020-12-23 09:19:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:19:56,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-23 09:19:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:56,281 INFO L225 Difference]: With dead ends: 438 [2020-12-23 09:19:56,281 INFO L226 Difference]: Without dead ends: 436 [2020-12-23 09:19:56,282 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 [2020-12-23 09:19:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2020-12-23 09:19:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 206. [2020-12-23 09:19:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-12-23 09:19:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 288 transitions. [2020-12-23 09:19:56,326 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 288 transitions. Word has length 26 [2020-12-23 09:19:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:56,327 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 288 transitions. [2020-12-23 09:19:56,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:19:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 288 transitions. [2020-12-23 09:19:56,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 09:19:56,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:56,329 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] [2020-12-23 09:19:56,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 09:19:56,333 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:56,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1724354492, now seen corresponding path program 1 times [2020-12-23 09:19:56,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:56,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046935446] [2020-12-23 09:19:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:56,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046935446] [2020-12-23 09:19:56,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:56,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:19:56,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318049832] [2020-12-23 09:19:56,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:19:56,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:56,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:19:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:19:56,453 INFO L87 Difference]: Start difference. First operand 206 states and 288 transitions. Second operand 4 states. [2020-12-23 09:19:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:56,567 INFO L93 Difference]: Finished difference Result 426 states and 607 transitions. [2020-12-23 09:19:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 09:19:56,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-23 09:19:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:56,574 INFO L225 Difference]: With dead ends: 426 [2020-12-23 09:19:56,574 INFO L226 Difference]: Without dead ends: 309 [2020-12-23 09:19:56,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:19:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-23 09:19:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2020-12-23 09:19:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-23 09:19:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2020-12-23 09:19:56,607 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 31 [2020-12-23 09:19:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:56,609 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2020-12-23 09:19:56,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:19:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2020-12-23 09:19:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 09:19:56,618 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:56,619 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] [2020-12-23 09:19:56,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 09:19:56,619 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:56,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1982519930, now seen corresponding path program 1 times [2020-12-23 09:19:56,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:56,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124780876] [2020-12-23 09:19:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:56,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124780876] [2020-12-23 09:19:56,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:56,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 09:19:56,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556555423] [2020-12-23 09:19:56,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 09:19:56,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:56,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 09:19:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 09:19:56,724 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand 4 states. [2020-12-23 09:19:56,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:56,818 INFO L93 Difference]: Finished difference Result 894 states and 1264 transitions. [2020-12-23 09:19:56,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 09:19:56,819 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-23 09:19:56,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:56,823 INFO L225 Difference]: With dead ends: 894 [2020-12-23 09:19:56,823 INFO L226 Difference]: Without dead ends: 676 [2020-12-23 09:19:56,825 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 [2020-12-23 09:19:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2020-12-23 09:19:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 305. [2020-12-23 09:19:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-23 09:19:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 421 transitions. [2020-12-23 09:19:56,853 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 421 transitions. Word has length 31 [2020-12-23 09:19:56,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:56,854 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 421 transitions. [2020-12-23 09:19:56,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 09:19:56,854 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 421 transitions. [2020-12-23 09:19:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-23 09:19:56,855 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:56,855 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] [2020-12-23 09:19:56,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 09:19:56,856 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:56,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1589492920, now seen corresponding path program 1 times [2020-12-23 09:19:56,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:56,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607832636] [2020-12-23 09:19:56,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:56,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607832636] [2020-12-23 09:19:56,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:56,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:19:56,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622696441] [2020-12-23 09:19:56,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:19:56,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:56,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:19:56,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:19:56,927 INFO L87 Difference]: Start difference. First operand 305 states and 421 transitions. Second operand 5 states. [2020-12-23 09:19:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:57,112 INFO L93 Difference]: Finished difference Result 673 states and 940 transitions. [2020-12-23 09:19:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:19:57,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-12-23 09:19:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:57,116 INFO L225 Difference]: With dead ends: 673 [2020-12-23 09:19:57,116 INFO L226 Difference]: Without dead ends: 455 [2020-12-23 09:19:57,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 09:19:57,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-12-23 09:19:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 336. [2020-12-23 09:19:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-12-23 09:19:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 467 transitions. [2020-12-23 09:19:57,144 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 467 transitions. Word has length 31 [2020-12-23 09:19:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:57,144 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 467 transitions. [2020-12-23 09:19:57,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:19:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 467 transitions. [2020-12-23 09:19:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-23 09:19:57,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:57,146 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:57,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 09:19:57,147 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:57,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1126741246, now seen corresponding path program 1 times [2020-12-23 09:19:57,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:57,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096802888] [2020-12-23 09:19:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 09:19:57,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096802888] [2020-12-23 09:19:57,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:57,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 09:19:57,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173487279] [2020-12-23 09:19:57,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 09:19:57,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:57,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 09:19:57,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 09:19:57,197 INFO L87 Difference]: Start difference. First operand 336 states and 467 transitions. Second operand 3 states. [2020-12-23 09:19:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:57,316 INFO L93 Difference]: Finished difference Result 577 states and 798 transitions. [2020-12-23 09:19:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 09:19:57,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-23 09:19:57,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:57,318 INFO L225 Difference]: With dead ends: 577 [2020-12-23 09:19:57,319 INFO L226 Difference]: Without dead ends: 247 [2020-12-23 09:19:57,320 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 [2020-12-23 09:19:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-12-23 09:19:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 239. [2020-12-23 09:19:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-12-23 09:19:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 325 transitions. [2020-12-23 09:19:57,339 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 325 transitions. Word has length 48 [2020-12-23 09:19:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:57,340 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 325 transitions. [2020-12-23 09:19:57,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 09:19:57,340 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 325 transitions. [2020-12-23 09:19:57,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 09:19:57,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:57,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:57,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 09:19:57,342 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:57,342 INFO L82 PathProgramCache]: Analyzing trace with hash 173848119, now seen corresponding path program 1 times [2020-12-23 09:19:57,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:57,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109772697] [2020-12-23 09:19:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 09:19:57,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109772697] [2020-12-23 09:19:57,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:57,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:19:57,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182496935] [2020-12-23 09:19:57,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:19:57,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:57,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:19:57,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:19:57,405 INFO L87 Difference]: Start difference. First operand 239 states and 325 transitions. Second operand 5 states. [2020-12-23 09:19:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:57,513 INFO L93 Difference]: Finished difference Result 733 states and 994 transitions. [2020-12-23 09:19:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:19:57,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-23 09:19:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:57,516 INFO L225 Difference]: With dead ends: 733 [2020-12-23 09:19:57,516 INFO L226 Difference]: Without dead ends: 500 [2020-12-23 09:19:57,517 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 [2020-12-23 09:19:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-23 09:19:57,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 248. [2020-12-23 09:19:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-12-23 09:19:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 334 transitions. [2020-12-23 09:19:57,541 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 334 transitions. Word has length 49 [2020-12-23 09:19:57,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:57,542 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 334 transitions. [2020-12-23 09:19:57,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:19:57,542 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 334 transitions. [2020-12-23 09:19:57,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-23 09:19:57,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:57,543 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:57,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 09:19:57,544 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:57,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:57,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1560051513, now seen corresponding path program 1 times [2020-12-23 09:19:57,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:57,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737705873] [2020-12-23 09:19:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-23 09:19:57,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737705873] [2020-12-23 09:19:57,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 09:19:57,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 09:19:57,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129983114] [2020-12-23 09:19:57,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 09:19:57,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:57,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 09:19:57,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 09:19:57,601 INFO L87 Difference]: Start difference. First operand 248 states and 334 transitions. Second operand 5 states. [2020-12-23 09:19:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:57,728 INFO L93 Difference]: Finished difference Result 600 states and 800 transitions. [2020-12-23 09:19:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 09:19:57,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-23 09:19:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:57,731 INFO L225 Difference]: With dead ends: 600 [2020-12-23 09:19:57,731 INFO L226 Difference]: Without dead ends: 358 [2020-12-23 09:19:57,732 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 [2020-12-23 09:19:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-23 09:19:57,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 216. [2020-12-23 09:19:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-12-23 09:19:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 284 transitions. [2020-12-23 09:19:57,756 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 284 transitions. Word has length 49 [2020-12-23 09:19:57,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:57,756 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 284 transitions. [2020-12-23 09:19:57,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 09:19:57,756 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 284 transitions. [2020-12-23 09:19:57,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-23 09:19:57,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:57,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:57,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 09:19:57,758 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash -103400707, now seen corresponding path program 1 times [2020-12-23 09:19:57,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:57,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175093965] [2020-12-23 09:19:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:57,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175093965] [2020-12-23 09:19:57,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714925028] [2020-12-23 09:19:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 09:19:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 09:19:58,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-23 09:19:58,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 09:19:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 09:19:58,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 09:19:58,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-12-23 09:19:58,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098397331] [2020-12-23 09:19:58,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 09:19:58,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 09:19:58,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 09:19:58,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 09:19:58,143 INFO L87 Difference]: Start difference. First operand 216 states and 284 transitions. Second operand 6 states. [2020-12-23 09:19:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 09:19:58,447 INFO L93 Difference]: Finished difference Result 608 states and 813 transitions. [2020-12-23 09:19:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 09:19:58,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-12-23 09:19:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 09:19:58,452 INFO L225 Difference]: With dead ends: 608 [2020-12-23 09:19:58,452 INFO L226 Difference]: Without dead ends: 446 [2020-12-23 09:19:58,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-23 09:19:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-12-23 09:19:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 262. [2020-12-23 09:19:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-23 09:19:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 345 transitions. [2020-12-23 09:19:58,490 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 345 transitions. Word has length 50 [2020-12-23 09:19:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 09:19:58,491 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 345 transitions. [2020-12-23 09:19:58,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 09:19:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 345 transitions. [2020-12-23 09:19:58,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-23 09:19:58,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 09:19:58,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 09:19:58,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-23 09:19:58,707 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 09:19:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 09:19:58,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1377844072, now seen corresponding path program 2 times [2020-12-23 09:19:58,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 09:19:58,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324135556] [2020-12-23 09:19:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 09:19:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 09:19:58,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 09:19:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 09:19:58,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 09:19:58,921 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 09:19:58,922 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 09:19:58,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 09:19:59,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 09:19:59 BoogieIcfgContainer [2020-12-23 09:19:59,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 09:19:59,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 09:19:59,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 09:19:59,083 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 09:19:59,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 09:19:54" (3/4) ... [2020-12-23 09:19:59,087 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 09:19:59,305 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/product-lines/minepump_spec4_product40.cil.c-witness.graphml [2020-12-23 09:19:59,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 09:19:59,307 INFO L168 Benchmark]: Toolchain (without parser) took 7224.74 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 125.9 MB in the beginning and 79.7 MB in the end (delta: 46.2 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,307 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 09:19:59,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 161.90 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 131.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,308 INFO L168 Benchmark]: Boogie Preprocessor took 52.00 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 128.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,309 INFO L168 Benchmark]: RCFGBuilder took 1592.10 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 67.8 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,309 INFO L168 Benchmark]: TraceAbstraction took 4530.79 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 67.2 MB in the beginning and 107.0 MB in the end (delta: -39.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,310 INFO L168 Benchmark]: Witness Printer took 222.60 ms. Allocated memory is still 192.9 MB. Free memory was 107.0 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-23 09:19:59,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 654.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 104.0 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 161.90 ms. Allocated memory is still 151.0 MB. Free memory was 104.0 MB in the beginning and 131.2 MB in the end (delta: -27.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.00 ms. Allocated memory is still 151.0 MB. Free memory was 131.2 MB in the beginning and 128.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1592.10 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 67.8 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4530.79 ms. Allocated memory was 151.0 MB in the beginning and 192.9 MB in the end (delta: 41.9 MB). Free memory was 67.2 MB in the beginning and 107.0 MB in the end (delta: -39.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 8.0 GB. * Witness Printer took 222.60 ms. Allocated memory is still 192.9 MB. Free memory was 107.0 MB in the beginning and 79.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 331]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L125] int pumpRunning = 0; [L126] int systemActive = 1; [L336] int cleanupTimeShifts = 4; [L436] int waterLevel = 1; [L437] int methaneLevelCritical = 0; [L699] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] int retValue_acc ; [L413] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L948] int retValue_acc ; [L951] retValue_acc = 1 [L952] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L419] tmp = valid_product() [L421] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L49] int splverifierCounter ; [L50] int tmp ; [L51] int tmp___0 ; [L52] int tmp___1 ; [L53] int tmp___2 ; [L56] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE waterLevel < 2 [L455] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L133] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] COND FALSE !(\read(pumpRunning)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] COND TRUE ! pumpRunning [L285] int retValue_acc ; [L286] int tmp ; [L287] int tmp___0 ; [L516] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] COND FALSE !(waterLevel < 2) [L523] retValue_acc = 0 [L524] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterSensorDry() [L293] COND FALSE !(\read(tmp)) [L296] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L298] retValue_acc = tmp___0 [L299] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] tmp = isHighWaterLevel() [L169] COND TRUE \read(tmp) [L216] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L902] tmp = getWaterLevel() [L904] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L60] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L66] tmp = __VERIFIER_nondet_int() [L68] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L76] tmp___0 = __VERIFIER_nondet_int() [L78] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L86] tmp___2 = __VERIFIER_nondet_int() [L88] COND TRUE \read(tmp___2) [L322] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L133] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L442] COND TRUE waterLevel > 0 [L443] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L140] COND TRUE \read(systemActive) [L188] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] COND TRUE \read(pumpRunning) [L229] int retValue_acc ; [L475] int retValue_acc ; [L478] retValue_acc = methaneLevelCritical [L479] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L233] retValue_acc = isMethaneLevelCritical() [L235] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] tmp = isMethaneAlarm() [L195] COND FALSE !(\read(tmp)) [L162] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L897] int tmp ; [L898] int tmp___0 ; [L507] int retValue_acc ; [L510] retValue_acc = waterLevel [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L902] tmp = getWaterLevel() [L904] COND TRUE tmp == 0 [L240] int retValue_acc ; [L243] retValue_acc = pumpRunning [L244] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp___0 = isPumpRunning() [L908] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L331] 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, 113 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1409 SDtfs, 1510 SDslu, 1947 SDs, 0 SdLazy, 301 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=336occurred 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: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1432 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 455 ConstructedInterpolants, 0 QuantifiedInterpolants, 28097 SizeOfPredicates, 3 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 64/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...