/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:40,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:40,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:40,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:47:40,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:47:40,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:47:40,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:47:40,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:47:40,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:47:40,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:47:40,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:47:40,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:47:40,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:40,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:40,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:40,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:40,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:40,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:40,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:40,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:40,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:40,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:40,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:40,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:40,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 04:47:40,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 04:47:40,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 04:47:40,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 04:47:40,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 04:47:40,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 04:47:40,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 04:47:40,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 04:47:40,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 04:47:40,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 04:47:40,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 04:47:40,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 04:47:40,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 04:47:40,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 04:47:40,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:40,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:40,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:40,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:47:40,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:40,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:40,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:40,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:40,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:40,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:40,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:40,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:40,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:40,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:40,955 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:40,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:40,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:40,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:40,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:40,956 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:40,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:40,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:40,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:40,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:40,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:40,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:40,958 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:40,958 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:41,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:41,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:41,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:41,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:41,419 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:41,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 04:47:41,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/838e930fb/c429faea1afd4f85a3cced288f2d50a0/FLAG47a2386c5 [2021-02-24 04:47:42,148 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:42,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 04:47:42,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/838e930fb/c429faea1afd4f85a3cced288f2d50a0/FLAG47a2386c5 [2021-02-24 04:47:42,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/838e930fb/c429faea1afd4f85a3cced288f2d50a0 [2021-02-24 04:47:42,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:42,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:42,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:42,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:42,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:42,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b935ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42, skipping insertion in model container [2021-02-24 04:47:42,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:42,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:42,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-24 04:47:42,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:42,763 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:42,787 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER_cases1_stripFullBoth_arr.i[840,853] [2021-02-24 04:47:42,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:42,876 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:42,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42 WrapperNode [2021-02-24 04:47:42,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:42,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:42,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:42,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:42,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (1/1) ... [2021-02-24 04:47:42,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:42,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:42,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:42,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:42,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (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 [2021-02-24 04:47:43,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2021-02-24 04:47:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2021-02-24 04:47:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 04:47:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 04:47:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:43,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-02-24 04:47:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-02-24 04:47:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-02-24 04:47:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-02-24 04:47:43,067 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2021-02-24 04:47:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-02-24 04:47:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-02-24 04:47:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-02-24 04:47:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-02-24 04:47:43,068 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-02-24 04:47:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-02-24 04:47:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2021-02-24 04:47:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2021-02-24 04:47:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2021-02-24 04:47:43,069 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2021-02-24 04:47:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2021-02-24 04:47:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2021-02-24 04:47:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2021-02-24 04:47:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2021-02-24 04:47:43,070 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2021-02-24 04:47:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2021-02-24 04:47:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2021-02-24 04:47:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2021-02-24 04:47:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2021-02-24 04:47:43,071 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:43,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:43,949 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:47:43,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:43 BoogieIcfgContainer [2021-02-24 04:47:43,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:43,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:43,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:43,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:43,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:42" (1/3) ... [2021-02-24 04:47:43,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b731a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:43, skipping insertion in model container [2021-02-24 04:47:43,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:42" (2/3) ... [2021-02-24 04:47:43,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b731a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:43, skipping insertion in model container [2021-02-24 04:47:43,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:43" (3/3) ... [2021-02-24 04:47:43,962 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER_cases1_stripFullBoth_arr.i [2021-02-24 04:47:43,969 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:43,974 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:43,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:44,022 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:44,023 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:44,023 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:44,023 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:44,023 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:44,023 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:44,023 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:44,024 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:44,043 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2021-02-24 04:47:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 04:47:44,056 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:44,057 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] [2021-02-24 04:47:44,058 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:44,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1777091402, now seen corresponding path program 1 times [2021-02-24 04:47:44,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:44,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849650213] [2021-02-24 04:47:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:44,163 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:44,335 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:44,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-24 04:47:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:44,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:44,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849650213] [2021-02-24 04:47:44,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:44,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:47:44,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501591938] [2021-02-24 04:47:44,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:47:44,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:44,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:47:44,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:44,524 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2021-02-24 04:47:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:44,833 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2021-02-24 04:47:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:47:44,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-02-24 04:47:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:44,844 INFO L225 Difference]: With dead ends: 232 [2021-02-24 04:47:44,844 INFO L226 Difference]: Without dead ends: 106 [2021-02-24 04:47:44,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-02-24 04:47:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-02-24 04:47:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2021-02-24 04:47:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2021-02-24 04:47:44,906 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 52 [2021-02-24 04:47:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:44,907 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2021-02-24 04:47:44,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:47:44,907 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2021-02-24 04:47:44,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-24 04:47:44,910 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:44,911 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] [2021-02-24 04:47:44,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:44,911 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:44,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:44,912 INFO L82 PathProgramCache]: Analyzing trace with hash 57162465, now seen corresponding path program 1 times [2021-02-24 04:47:44,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:44,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475841047] [2021-02-24 04:47:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:44,916 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:44,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:44,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:44,989 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:45,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-02-24 04:47:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:45,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:45,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475841047] [2021-02-24 04:47:45,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:45,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:47:45,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823650795] [2021-02-24 04:47:45,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:47:45,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:45,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:47:45,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:45,079 INFO L87 Difference]: Start difference. First operand 106 states and 115 transitions. Second operand 4 states. [2021-02-24 04:47:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:45,384 INFO L93 Difference]: Finished difference Result 193 states and 212 transitions. [2021-02-24 04:47:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:47:45,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2021-02-24 04:47:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:45,389 INFO L225 Difference]: With dead ends: 193 [2021-02-24 04:47:45,392 INFO L226 Difference]: Without dead ends: 107 [2021-02-24 04:47:45,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:45,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-24 04:47:45,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-02-24 04:47:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-02-24 04:47:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2021-02-24 04:47:45,431 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 64 [2021-02-24 04:47:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:45,431 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2021-02-24 04:47:45,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:47:45,432 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2021-02-24 04:47:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-02-24 04:47:45,436 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:45,436 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] [2021-02-24 04:47:45,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:47:45,437 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:45,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1846540770, now seen corresponding path program 1 times [2021-02-24 04:47:45,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:45,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969682181] [2021-02-24 04:47:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:45,448 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:45,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:45,709 WARN L141 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-02-24 04:47:45,710 WARN L147 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size 9 [2021-02-24 04:47:45,720 WARN L141 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size [2021-02-24 04:47:45,721 WARN L147 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size 15 [2021-02-24 04:47:45,743 WARN L141 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-02-24 04:47:45,744 WARN L147 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size 13 [2021-02-24 04:47:45,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:45,788 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,788 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:45,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:45,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-24 04:47:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:45,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:45,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:45,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:45,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969682181] [2021-02-24 04:47:45,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:45,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 04:47:45,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845997286] [2021-02-24 04:47:45,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 04:47:45,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 04:47:45,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-02-24 04:47:45,906 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 9 states. [2021-02-24 04:47:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:46,405 INFO L93 Difference]: Finished difference Result 212 states and 236 transitions. [2021-02-24 04:47:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-24 04:47:46,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2021-02-24 04:47:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:46,411 INFO L225 Difference]: With dead ends: 212 [2021-02-24 04:47:46,411 INFO L226 Difference]: Without dead ends: 210 [2021-02-24 04:47:46,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-02-24 04:47:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-02-24 04:47:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 167. [2021-02-24 04:47:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2021-02-24 04:47:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-02-24 04:47:46,445 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 66 [2021-02-24 04:47:46,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:46,445 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-02-24 04:47:46,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 04:47:46,446 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-02-24 04:47:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-24 04:47:46,449 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:46,449 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] [2021-02-24 04:47:46,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:47:46,450 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:46,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1494007365, now seen corresponding path program 1 times [2021-02-24 04:47:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:46,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709370754] [2021-02-24 04:47:46,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:46,454 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:46,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:46,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:46,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:47:46,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 04:47:46,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:46,588 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:46,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:46,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:46,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:46,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:46,635 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:46,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-24 04:47:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:46,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:46,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:46,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709370754] [2021-02-24 04:47:46,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:46,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 04:47:46,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084481858] [2021-02-24 04:47:46,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 04:47:46,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:46,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 04:47:46,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-24 04:47:46,701 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand 12 states. [2021-02-24 04:47:47,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:47,391 INFO L93 Difference]: Finished difference Result 452 states and 513 transitions. [2021-02-24 04:47:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:47:47,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2021-02-24 04:47:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:47,396 INFO L225 Difference]: With dead ends: 452 [2021-02-24 04:47:47,397 INFO L226 Difference]: Without dead ends: 362 [2021-02-24 04:47:47,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-02-24 04:47:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-02-24 04:47:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 207. [2021-02-24 04:47:47,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2021-02-24 04:47:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2021-02-24 04:47:47,457 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 69 [2021-02-24 04:47:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:47,459 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2021-02-24 04:47:47,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 04:47:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2021-02-24 04:47:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-24 04:47:47,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:47,470 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] [2021-02-24 04:47:47,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:47:47,471 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:47,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1869971361, now seen corresponding path program 1 times [2021-02-24 04:47:47,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:47,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73794776] [2021-02-24 04:47:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:47,476 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-24 04:47:47,559 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,560 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-02-24 04:47:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:47,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73794776] [2021-02-24 04:47:47,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:47,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 04:47:47,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725016361] [2021-02-24 04:47:47,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 04:47:47,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:47,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 04:47:47,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:47,597 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand 4 states. [2021-02-24 04:47:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:47,807 INFO L93 Difference]: Finished difference Result 297 states and 336 transitions. [2021-02-24 04:47:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 04:47:47,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2021-02-24 04:47:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:47,809 INFO L225 Difference]: With dead ends: 297 [2021-02-24 04:47:47,809 INFO L226 Difference]: Without dead ends: 209 [2021-02-24 04:47:47,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 04:47:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-02-24 04:47:47,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2021-02-24 04:47:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2021-02-24 04:47:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 236 transitions. [2021-02-24 04:47:47,829 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 236 transitions. Word has length 69 [2021-02-24 04:47:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:47,830 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 236 transitions. [2021-02-24 04:47:47,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 04:47:47,830 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 236 transitions. [2021-02-24 04:47:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-24 04:47:47,831 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:47,832 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] [2021-02-24 04:47:47,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 04:47:47,832 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:47,833 INFO L82 PathProgramCache]: Analyzing trace with hash -762357340, now seen corresponding path program 1 times [2021-02-24 04:47:47,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:47,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290827863] [2021-02-24 04:47:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:47,835 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-24 04:47:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:47,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:47,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:47,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290827863] [2021-02-24 04:47:47,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:47,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:47:47,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794335983] [2021-02-24 04:47:47,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:47:47,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:47:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:47:47,911 INFO L87 Difference]: Start difference. First operand 209 states and 236 transitions. Second operand 5 states. [2021-02-24 04:47:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:48,141 INFO L93 Difference]: Finished difference Result 314 states and 353 transitions. [2021-02-24 04:47:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:47:48,142 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2021-02-24 04:47:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:48,144 INFO L225 Difference]: With dead ends: 314 [2021-02-24 04:47:48,144 INFO L226 Difference]: Without dead ends: 217 [2021-02-24 04:47:48,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-02-24 04:47:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2021-02-24 04:47:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-24 04:47:48,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2021-02-24 04:47:48,164 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 70 [2021-02-24 04:47:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:48,164 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2021-02-24 04:47:48,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:47:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2021-02-24 04:47:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-24 04:47:48,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:48,166 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] [2021-02-24 04:47:48,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:47:48,166 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:48,167 INFO L82 PathProgramCache]: Analyzing trace with hash 220442596, now seen corresponding path program 1 times [2021-02-24 04:47:48,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:48,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115183686] [2021-02-24 04:47:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:48,170 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,197 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:48,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:48,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-24 04:47:48,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-02-24 04:47:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:48,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115183686] [2021-02-24 04:47:48,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:48,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:47:48,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785416054] [2021-02-24 04:47:48,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:47:48,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:48,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:47:48,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:48,255 INFO L87 Difference]: Start difference. First operand 213 states and 240 transitions. Second operand 6 states. [2021-02-24 04:47:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:48,532 INFO L93 Difference]: Finished difference Result 386 states and 432 transitions. [2021-02-24 04:47:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 04:47:48,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2021-02-24 04:47:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:48,535 INFO L225 Difference]: With dead ends: 386 [2021-02-24 04:47:48,535 INFO L226 Difference]: Without dead ends: 274 [2021-02-24 04:47:48,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:47:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-02-24 04:47:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 217. [2021-02-24 04:47:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-24 04:47:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 243 transitions. [2021-02-24 04:47:48,557 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 243 transitions. Word has length 71 [2021-02-24 04:47:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:48,558 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 243 transitions. [2021-02-24 04:47:48,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:47:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 243 transitions. [2021-02-24 04:47:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-24 04:47:48,559 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:48,559 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] [2021-02-24 04:47:48,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 04:47:48,560 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:48,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash -767764281, now seen corresponding path program 1 times [2021-02-24 04:47:48,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:48,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416817316] [2021-02-24 04:47:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:48,563 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,606 WARN L141 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size [2021-02-24 04:47:48,607 WARN L147 QuantifierPusher]: treesize reduction 1, result has 85.7 percent of original size 6 [2021-02-24 04:47:48,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 04:47:48,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-24 04:47:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:48,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:48,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:48,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416817316] [2021-02-24 04:47:48,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:48,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-24 04:47:48,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597748976] [2021-02-24 04:47:48,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-24 04:47:48,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:48,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-24 04:47:48,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:47:48,676 INFO L87 Difference]: Start difference. First operand 217 states and 243 transitions. Second operand 6 states. [2021-02-24 04:47:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:48,988 INFO L93 Difference]: Finished difference Result 358 states and 400 transitions. [2021-02-24 04:47:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:47:48,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2021-02-24 04:47:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:48,992 INFO L225 Difference]: With dead ends: 358 [2021-02-24 04:47:48,993 INFO L226 Difference]: Without dead ends: 261 [2021-02-24 04:47:48,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:47:48,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-02-24 04:47:49,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 217. [2021-02-24 04:47:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-24 04:47:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2021-02-24 04:47:49,015 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 72 [2021-02-24 04:47:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:49,016 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2021-02-24 04:47:49,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-24 04:47:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2021-02-24 04:47:49,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-24 04:47:49,017 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:49,025 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] [2021-02-24 04:47:49,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 04:47:49,026 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:49,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1330822876, now seen corresponding path program 1 times [2021-02-24 04:47:49,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:49,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928884613] [2021-02-24 04:47:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:49,030 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:49,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:49,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:49,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:49,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:49,111 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 04:47:49,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,121 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-24 04:47:49,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:49,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:49,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-24 04:47:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:49,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:49,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928884613] [2021-02-24 04:47:49,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:49,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-24 04:47:49,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727237947] [2021-02-24 04:47:49,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-24 04:47:49,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:49,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-24 04:47:49,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-24 04:47:49,186 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand 8 states. [2021-02-24 04:47:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:49,610 INFO L93 Difference]: Finished difference Result 460 states and 514 transitions. [2021-02-24 04:47:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 04:47:49,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2021-02-24 04:47:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:49,615 INFO L225 Difference]: With dead ends: 460 [2021-02-24 04:47:49,616 INFO L226 Difference]: Without dead ends: 303 [2021-02-24 04:47:49,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-02-24 04:47:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-02-24 04:47:49,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 224. [2021-02-24 04:47:49,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2021-02-24 04:47:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 246 transitions. [2021-02-24 04:47:49,640 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 246 transitions. Word has length 74 [2021-02-24 04:47:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:49,640 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 246 transitions. [2021-02-24 04:47:49,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-24 04:47:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 246 transitions. [2021-02-24 04:47:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-02-24 04:47:49,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:49,642 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:47:49,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 04:47:49,642 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:49,645 INFO L82 PathProgramCache]: Analyzing trace with hash -448602513, now seen corresponding path program 1 times [2021-02-24 04:47:49,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:49,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432661480] [2021-02-24 04:47:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:49,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:47:49,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:49,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 04:47:49,712 WARN L141 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size [2021-02-24 04:47:49,727 WARN L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-02-24 04:47:49,732 WARN L141 QuantifierPusher]: treesize reduction 20, result has 57.4 percent of original size [2021-02-24 04:47:49,734 WARN L147 QuantifierPusher]: treesize reduction 20, result has 57.4 percent of original size 27 [2021-02-24 04:47:49,735 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:47:49,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 04:47:49,738 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateFactory.newSPredicate(PredicateFactory.java:60) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.generateMetaTrace(AcceleratedInterpolationCore.java:379) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:225) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:47:49,742 INFO L168 Benchmark]: Toolchain (without parser) took 7264.13 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 127.2 MB in the beginning and 158.6 MB in the end (delta: -31.4 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:49,742 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:49,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 114.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:49,743 INFO L168 Benchmark]: Boogie Preprocessor took 57.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:49,744 INFO L168 Benchmark]: RCFGBuilder took 1015.61 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.7 MB in the end (delta: 834.0 kB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:49,744 INFO L168 Benchmark]: TraceAbstraction took 5786.58 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 111.7 MB in the beginning and 158.6 MB in the end (delta: -46.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:49,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 83.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 383.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 114.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.28 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1015.61 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.7 MB in the end (delta: 834.0 kB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5786.58 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 111.7 MB in the beginning and 158.6 MB in the end (delta: -46.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_parse_expression_list_#t~short10_14|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...