/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:03:56,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:03:56,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:03:56,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:03:56,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:03:56,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:03:56,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:03:56,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:03:56,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:03:56,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:03:56,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:03:56,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:03:56,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:03:56,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:03:56,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:03:56,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:03:56,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:03:56,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:03:56,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:03:56,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:03:56,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:03:56,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:03:56,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:03:56,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:03:56,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 18:03:56,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 18:03:56,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 18:03:56,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 18:03:56,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 18:03:56,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 18:03:56,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 18:03:56,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 18:03:56,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 18:03:56,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 18:03:56,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 18:03:56,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 18:03:56,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 18:03:56,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 18:03:56,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:03:56,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:03:56,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:03:56,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:03:56,996 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:03:56,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:03:56,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:03:56,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:03:56,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:03:56,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:03:56,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:03:56,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:03:56,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:03:56,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:03:56,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:03:56,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:03:56,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:03:57,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:03:57,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:03:57,000 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:03:57,000 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:03:57,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:03:57,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:57,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:03:57,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:03:57,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:03:57,001 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:03:57,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:03:57,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:03:57,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:03:57,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:03:57,328 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:03:57,329 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-08-22 18:03:57,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7f24d1d/9b149db861994da28bca8e428a1f32d0/FLAGf83c0a2ba [2020-08-22 18:03:57,969 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:03:57,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product09.cil.c [2020-08-22 18:03:57,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7f24d1d/9b149db861994da28bca8e428a1f32d0/FLAGf83c0a2ba [2020-08-22 18:03:58,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca7f24d1d/9b149db861994da28bca8e428a1f32d0 [2020-08-22 18:03:58,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:03:58,227 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:03:58,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:58,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:03:58,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:03:58,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7845d484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58, skipping insertion in model container [2020-08-22 18:03:58,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:03:58,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:03:58,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:58,758 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:03:58,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:03:58,861 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:03:58,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58 WrapperNode [2020-08-22 18:03:58,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:03:58,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:03:58,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:03:58,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:03:58,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... [2020-08-22 18:03:58,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:03:58,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:03:58,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:03:58,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:03:58,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:03:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:03:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:03:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 18:03:59,017 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 18:03:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 18:03:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 18:03:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:03:59,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 18:03:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 18:03:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 18:03:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 18:03:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-22 18:03:59,019 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 18:03:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 18:03:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 18:03:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 18:03:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 18:03:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 18:03:59,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 18:03:59,023 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 18:03:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 18:03:59,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 18:03:59,025 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 18:03:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 18:03:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 18:03:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 18:03:59,027 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 18:03:59,027 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 18:03:59,028 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 18:03:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 18:03:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 18:03:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 18:03:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:03:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 18:03:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 18:03:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 18:03:59,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:03:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 18:03:59,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:04:00,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:04:00,114 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 18:04:00,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:00 BoogieIcfgContainer [2020-08-22 18:04:00,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:04:00,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:04:00,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:04:00,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:04:00,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:03:58" (1/3) ... [2020-08-22 18:04:00,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b464b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:00, skipping insertion in model container [2020-08-22 18:04:00,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:03:58" (2/3) ... [2020-08-22 18:04:00,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b464b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:04:00, skipping insertion in model container [2020-08-22 18:04:00,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:04:00" (3/3) ... [2020-08-22 18:04:00,129 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product09.cil.c [2020-08-22 18:04:00,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:04:00,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:04:00,166 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:04:00,192 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:04:00,193 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:04:00,193 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:04:00,193 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:04:00,193 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:04:00,193 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:04:00,194 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:04:00,194 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:04:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states. [2020-08-22 18:04:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-22 18:04:00,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:00,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:00,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:00,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:00,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2059425041, now seen corresponding path program 1 times [2020-08-22 18:04:00,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:00,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593912214] [2020-08-22 18:04:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:00,356 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,021 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:01,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-22 18:04:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:01,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593912214] [2020-08-22 18:04:01,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:01,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 18:04:01,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140463144] [2020-08-22 18:04:01,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 18:04:01,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:01,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 18:04:01,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:01,238 INFO L87 Difference]: Start difference. First operand 268 states. Second operand 3 states. [2020-08-22 18:04:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:02,294 INFO L93 Difference]: Finished difference Result 365 states and 438 transitions. [2020-08-22 18:04:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 18:04:02,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-08-22 18:04:02,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:02,314 INFO L225 Difference]: With dead ends: 365 [2020-08-22 18:04:02,315 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 18:04:02,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 18:04:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 18:04:02,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-08-22 18:04:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-22 18:04:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 215 transitions. [2020-08-22 18:04:02,494 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 215 transitions. Word has length 153 [2020-08-22 18:04:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:02,497 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 215 transitions. [2020-08-22 18:04:02,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 18:04:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 215 transitions. [2020-08-22 18:04:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 18:04:02,510 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:02,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:02,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:04:02,511 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1720620052, now seen corresponding path program 1 times [2020-08-22 18:04:02,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:02,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088426362] [2020-08-22 18:04:02,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:02,517 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:02,939 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 18:04:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-22 18:04:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:03,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088426362] [2020-08-22 18:04:03,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:03,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:04:03,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174943343] [2020-08-22 18:04:03,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:04:03,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:03,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:04:03,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:04:03,043 INFO L87 Difference]: Start difference. First operand 201 states and 215 transitions. Second operand 4 states. [2020-08-22 18:04:03,658 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 18:04:04,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:04,219 INFO L93 Difference]: Finished difference Result 282 states and 313 transitions. [2020-08-22 18:04:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 18:04:04,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-08-22 18:04:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:04,223 INFO L225 Difference]: With dead ends: 282 [2020-08-22 18:04:04,223 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 18:04:04,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:04:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 18:04:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-08-22 18:04:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-08-22 18:04:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2020-08-22 18:04:04,286 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 154 [2020-08-22 18:04:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:04,287 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2020-08-22 18:04:04,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:04:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2020-08-22 18:04:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-08-22 18:04:04,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:04,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-08-22 18:04:04,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:04:04,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:04,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2141035662, now seen corresponding path program 1 times [2020-08-22 18:04:04,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:04,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910540515] [2020-08-22 18:04:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:04,293 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,595 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:04,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 18:04:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 18:04:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-22 18:04:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:04,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910540515] [2020-08-22 18:04:04,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:04,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:04:04,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706348908] [2020-08-22 18:04:04,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:04:04,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:04:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:04:04,745 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand 9 states. [2020-08-22 18:04:05,265 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:05,595 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 18:04:05,854 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 18:04:06,128 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:06,375 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:06,614 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:07,672 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2020-08-22 18:04:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 18:04:07,672 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 163 [2020-08-22 18:04:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:07,675 INFO L225 Difference]: With dead ends: 302 [2020-08-22 18:04:07,676 INFO L226 Difference]: Without dead ends: 221 [2020-08-22 18:04:07,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:04:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-08-22 18:04:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2020-08-22 18:04:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-08-22 18:04:07,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2020-08-22 18:04:07,748 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 163 [2020-08-22 18:04:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:07,748 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2020-08-22 18:04:07,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:04:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2020-08-22 18:04:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-22 18:04:07,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:07,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-08-22 18:04:07,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:04:07,752 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:07,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1523328368, now seen corresponding path program 1 times [2020-08-22 18:04:07,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:07,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807738617] [2020-08-22 18:04:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:07,756 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,182 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:08,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:08,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 18:04:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 18:04:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 18:04:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 18:04:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:08,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807738617] [2020-08-22 18:04:08,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:08,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 18:04:08,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815995997] [2020-08-22 18:04:08,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 18:04:08,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:08,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 18:04:08,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 18:04:08,314 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand 8 states. [2020-08-22 18:04:08,970 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:10,146 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:10,452 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:10,719 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:10,983 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:11,218 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 18:04:11,480 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:11,708 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 18:04:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:12,018 INFO L93 Difference]: Finished difference Result 368 states and 417 transitions. [2020-08-22 18:04:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 18:04:12,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-08-22 18:04:12,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:12,023 INFO L225 Difference]: With dead ends: 368 [2020-08-22 18:04:12,023 INFO L226 Difference]: Without dead ends: 287 [2020-08-22 18:04:12,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:04:12,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-22 18:04:12,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 262. [2020-08-22 18:04:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-22 18:04:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-08-22 18:04:12,116 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 166 [2020-08-22 18:04:12,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:12,117 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-08-22 18:04:12,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 18:04:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-08-22 18:04:12,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:04:12,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:12,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:12,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:04:12,120 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:12,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:12,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1767718716, now seen corresponding path program 1 times [2020-08-22 18:04:12,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:12,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109670431] [2020-08-22 18:04:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:12,124 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,409 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 18:04:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:04:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 18:04:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 18:04:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 18:04:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 18:04:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 18:04:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 18:04:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-22 18:04:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 18:04:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-22 18:04:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:04:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:04:12,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109670431] [2020-08-22 18:04:12,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:04:12,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:04:12,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164178638] [2020-08-22 18:04:12,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:04:12,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:04:12,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:04:12,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:04:12,545 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-08-22 18:04:13,206 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 18:04:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:04:13,969 INFO L93 Difference]: Finished difference Result 361 states and 402 transitions. [2020-08-22 18:04:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 18:04:13,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-08-22 18:04:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:04:13,972 INFO L225 Difference]: With dead ends: 361 [2020-08-22 18:04:13,972 INFO L226 Difference]: Without dead ends: 269 [2020-08-22 18:04:13,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 18:04:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-22 18:04:14,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 248. [2020-08-22 18:04:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 18:04:14,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 263 transitions. [2020-08-22 18:04:14,052 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 263 transitions. Word has length 171 [2020-08-22 18:04:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:04:14,053 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 263 transitions. [2020-08-22 18:04:14,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:04:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 263 transitions. [2020-08-22 18:04:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-08-22 18:04:14,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:04:14,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:04:14,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 18:04:14,056 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:04:14,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:04:14,056 INFO L82 PathProgramCache]: Analyzing trace with hash -645930008, now seen corresponding path program 1 times [2020-08-22 18:04:14,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:04:14,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231840849] [2020-08-22 18:04:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:04:14,059 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:04:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:14,116 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:04:14,175 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:04:14,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:04:14,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:04:14,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 18:04:14,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:04:14 BoogieIcfgContainer [2020-08-22 18:04:14,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:04:14,412 INFO L168 Benchmark]: Toolchain (without parser) took 16184.71 ms. Allocated memory was 137.9 MB in the beginning and 529.5 MB in the end (delta: 391.6 MB). Free memory was 101.4 MB in the beginning and 309.3 MB in the end (delta: -207.9 MB). Peak memory consumption was 183.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,413 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.12 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 170.6 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,414 INFO L168 Benchmark]: Boogie Preprocessor took 88.17 ms. Allocated memory is still 201.3 MB. Free memory was 170.6 MB in the beginning and 166.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,415 INFO L168 Benchmark]: RCFGBuilder took 1169.73 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 179.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,416 INFO L168 Benchmark]: TraceAbstraction took 14287.83 ms. Allocated memory was 232.3 MB in the beginning and 529.5 MB in the end (delta: 297.3 MB). Free memory was 179.7 MB in the beginning and 309.3 MB in the end (delta: -129.6 MB). Peak memory consumption was 167.7 MB. Max. memory is 7.1 GB. [2020-08-22 18:04:14,420 INFO L336 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 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.12 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 170.6 MB in the end (delta: -69.5 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.17 ms. Allocated memory is still 201.3 MB. Free memory was 170.6 MB in the beginning and 166.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1169.73 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 166.1 MB in the beginning and 179.7 MB in the end (delta: -13.6 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14287.83 ms. Allocated memory was 232.3 MB in the beginning and 529.5 MB in the end (delta: 297.3 MB). Free memory was 179.7 MB in the beginning and 309.3 MB in the end (delta: -129.6 MB). Peak memory consumption was 167.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 148]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L224] int pumpRunning = 0; [L225] int systemActive = 1; [L589] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L786] int waterLevel = 1; [L787] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L411] int retValue_acc ; [L414] retValue_acc = 1 [L415] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L154] int splverifierCounter ; [L155] int tmp ; [L156] int tmp___0 ; [L157] int tmp___1 ; [L158] int tmp___2 ; [L161] splverifierCounter = 0 [L163] COND TRUE 1 [L165] COND TRUE splverifierCounter < 4 [L171] tmp = __VERIFIER_nondet_int() [L173] COND TRUE \read(tmp) [L175] CALL waterRise() [L804] COND TRUE waterLevel < 2 [L805] waterLevel = waterLevel + 1 [L175] RET waterRise() [L181] tmp___0 = __VERIFIER_nondet_int() [L183] COND FALSE !(\read(tmp___0)) [L191] tmp___2 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___2) [L206] CALL timeShift() [L232] COND FALSE !(\read(pumpRunning)) [L239] COND TRUE \read(systemActive) [L241] FCALL processEnvironment() [L247] CALL __utac_acc__Specification3_spec__1() [L352] int tmp ; [L353] int tmp___0 ; [L354] int tmp___1 ; [L358] CALL, EXPR isMethaneLevelCritical() [L825] int retValue_acc ; [L828] retValue_acc = methaneLevelCritical [L829] return (retValue_acc); [L358] RET, EXPR isMethaneLevelCritical() [L358] tmp = isMethaneLevelCritical() [L360] COND FALSE !(\read(tmp)) [L364] CALL, EXPR getWaterLevel() [L857] int retValue_acc ; [L860] retValue_acc = waterLevel [L861] return (retValue_acc); [L364] RET, EXPR getWaterLevel() [L364] tmp___0 = getWaterLevel() [L366] COND TRUE tmp___0 == 2 [L368] CALL, EXPR isPumpRunning() [L305] int retValue_acc ; [L308] retValue_acc = pumpRunning [L309] return (retValue_acc); [L368] RET, EXPR isPumpRunning() [L368] tmp___1 = isPumpRunning() [L370] COND FALSE !(\read(tmp___1)) [L374] CALL __automaton_fail() [L148] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 35 procedures, 587 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 958 SDslu, 1147 SDs, 0 SdLazy, 1888 SolverSat, 279 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=268occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 143 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...