/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:07,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:07,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:07,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:07,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:07,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:07,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:07,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:07,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:07,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:07,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:07,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:07,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:07,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:07,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:07,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:07,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:07,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:07,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:07,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:07,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:07,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:07,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:07,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:08,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:08,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:08,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:08,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:08,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:08,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:08,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:08,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:08,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:08,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:08,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:08,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:08,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:08,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:08,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:08,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:08,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:08,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:08,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:08,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:08,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:08,024 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:08,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:08,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:08,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:08,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:08,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:08,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:08,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:08,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:08,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:08,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:08,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:08,026 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:08,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:08,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:08,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:08,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:08,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:08,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:08,028 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:08,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:08,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:08,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:08,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:08,344 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:08,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-07-07 13:23:08,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6924ac2/400b901956d04ce89f773ff1f0212ef2/FLAG7f03aab08 [2020-07-07 13:23:08,976 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:08,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2020-07-07 13:23:08,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6924ac2/400b901956d04ce89f773ff1f0212ef2/FLAG7f03aab08 [2020-07-07 13:23:09,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6924ac2/400b901956d04ce89f773ff1f0212ef2 [2020-07-07 13:23:09,324 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:09,326 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:09,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:09,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:09,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:09,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67e62222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09, skipping insertion in model container [2020-07-07 13:23:09,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:09,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:09,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:09,849 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:09,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:09,950 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:09,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09 WrapperNode [2020-07-07 13:23:09,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:09,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:09,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:09,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:09,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:09,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:10,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:10,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... [2020-07-07 13:23:10,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:10,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:10,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:10,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:10,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:23:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:23:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-07 13:23:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-07 13:23:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-07 13:23:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:23:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:10,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:10,098 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:10,099 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:23:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:23:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-07 13:23:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-07 13:23:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-07 13:23:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:23:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:23:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:23:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:10,121 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:10,122 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:10,123 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:10,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:10,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:23:10,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:10,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:10,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:10,454 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:23:10,737 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:10,737 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 13:23:10,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:10 BoogieIcfgContainer [2020-07-07 13:23:10,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:10,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:10,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:10,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:10,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:09" (1/3) ... [2020-07-07 13:23:10,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1ecf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:10, skipping insertion in model container [2020-07-07 13:23:10,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:09" (2/3) ... [2020-07-07 13:23:10,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e1ecf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:10, skipping insertion in model container [2020-07-07 13:23:10,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:10" (3/3) ... [2020-07-07 13:23:10,750 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-07-07 13:23:10,761 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:10,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:10,781 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:10,799 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:10,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:10,800 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:10,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:10,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:10,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:10,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:10,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-07-07 13:23:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 13:23:10,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:10,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:10,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:10,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1227115345, now seen corresponding path program 1 times [2020-07-07 13:23:10,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:10,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80374132] [2020-07-07 13:23:10,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:11,053 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:11,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80374132] [2020-07-07 13:23:11,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:11,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:23:11,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457308504] [2020-07-07 13:23:11,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:23:11,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:11,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:23:11,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:23:11,083 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-07-07 13:23:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:11,287 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2020-07-07 13:23:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:23:11,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-07 13:23:11,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:11,300 INFO L225 Difference]: With dead ends: 110 [2020-07-07 13:23:11,300 INFO L226 Difference]: Without dead ends: 57 [2020-07-07 13:23:11,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:23:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-07 13:23:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-07 13:23:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-07 13:23:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-07-07 13:23:11,357 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 22 [2020-07-07 13:23:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:11,357 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-07-07 13:23:11,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:23:11,358 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-07-07 13:23:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 13:23:11,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:11,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:11,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:11,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:11,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1237633361, now seen corresponding path program 1 times [2020-07-07 13:23:11,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:11,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351317678] [2020-07-07 13:23:11,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:11,554 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:11,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351317678] [2020-07-07 13:23:11,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:11,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:11,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410132680] [2020-07-07 13:23:11,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:11,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:11,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:11,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:11,559 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 7 states. [2020-07-07 13:23:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:11,875 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-07-07 13:23:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:23:11,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-07-07 13:23:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:11,878 INFO L225 Difference]: With dead ends: 134 [2020-07-07 13:23:11,879 INFO L226 Difference]: Without dead ends: 128 [2020-07-07 13:23:11,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:23:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-07 13:23:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 70. [2020-07-07 13:23:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-07 13:23:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-07-07 13:23:11,897 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2020-07-07 13:23:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:11,897 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-07-07 13:23:11,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-07-07 13:23:11,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 13:23:11,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:11,900 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:23:11,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:11,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1213729417, now seen corresponding path program 1 times [2020-07-07 13:23:11,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:11,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914705108] [2020-07-07 13:23:11,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:12,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:12,054 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:12,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1914705108] [2020-07-07 13:23:12,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:12,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:12,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084772804] [2020-07-07 13:23:12,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:12,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:12,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:12,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:12,057 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 7 states. [2020-07-07 13:23:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:12,318 INFO L93 Difference]: Finished difference Result 137 states and 145 transitions. [2020-07-07 13:23:12,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:23:12,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-07 13:23:12,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:12,320 INFO L225 Difference]: With dead ends: 137 [2020-07-07 13:23:12,320 INFO L226 Difference]: Without dead ends: 122 [2020-07-07 13:23:12,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:23:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-07 13:23:12,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 67. [2020-07-07 13:23:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-07 13:23:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-07-07 13:23:12,333 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 36 [2020-07-07 13:23:12,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:12,334 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-07-07 13:23:12,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-07-07 13:23:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 13:23:12,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:12,339 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:23:12,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:12,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:12,340 INFO L82 PathProgramCache]: Analyzing trace with hash -2044556103, now seen corresponding path program 1 times [2020-07-07 13:23:12,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:12,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106452554] [2020-07-07 13:23:12,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:12,481 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:12,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106452554] [2020-07-07 13:23:12,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:12,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:12,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438765082] [2020-07-07 13:23:12,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:12,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:12,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:12,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:12,483 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 7 states. [2020-07-07 13:23:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:12,739 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-07-07 13:23:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:23:12,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-07-07 13:23:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:12,742 INFO L225 Difference]: With dead ends: 119 [2020-07-07 13:23:12,742 INFO L226 Difference]: Without dead ends: 95 [2020-07-07 13:23:12,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:23:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-07 13:23:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 62. [2020-07-07 13:23:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 13:23:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-07-07 13:23:12,761 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 36 [2020-07-07 13:23:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:12,761 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-07-07 13:23:12,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-07-07 13:23:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:23:12,765 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:12,766 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:23:12,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:12,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -833752717, now seen corresponding path program 1 times [2020-07-07 13:23:12,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:12,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107641547] [2020-07-07 13:23:12,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:13,057 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:13,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107641547] [2020-07-07 13:23:13,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:13,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:23:13,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508005835] [2020-07-07 13:23:13,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 13:23:13,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:13,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 13:23:13,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:23:13,060 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 15 states. [2020-07-07 13:23:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:13,887 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-07-07 13:23:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:23:13,888 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-07-07 13:23:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:13,889 INFO L225 Difference]: With dead ends: 144 [2020-07-07 13:23:13,889 INFO L226 Difference]: Without dead ends: 131 [2020-07-07 13:23:13,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-07-07 13:23:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-07 13:23:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 78. [2020-07-07 13:23:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-07 13:23:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-07-07 13:23:13,906 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 41 [2020-07-07 13:23:13,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:13,907 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-07-07 13:23:13,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 13:23:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-07-07 13:23:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:23:13,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:13,909 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:23:13,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:23:13,909 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash 865863745, now seen corresponding path program 1 times [2020-07-07 13:23:13,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:13,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703875760] [2020-07-07 13:23:13,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:14,153 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:14,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703875760] [2020-07-07 13:23:14,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:14,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 13:23:14,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685887246] [2020-07-07 13:23:14,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 13:23:14,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:14,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 13:23:14,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:23:14,157 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 15 states. [2020-07-07 13:23:15,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:15,014 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-07-07 13:23:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:23:15,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-07-07 13:23:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:15,017 INFO L225 Difference]: With dead ends: 160 [2020-07-07 13:23:15,017 INFO L226 Difference]: Without dead ends: 154 [2020-07-07 13:23:15,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2020-07-07 13:23:15,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-07 13:23:15,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 100. [2020-07-07 13:23:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-07 13:23:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2020-07-07 13:23:15,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 41 [2020-07-07 13:23:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:15,066 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2020-07-07 13:23:15,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 13:23:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2020-07-07 13:23:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-07 13:23:15,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:15,072 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] [2020-07-07 13:23:15,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:23:15,073 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1077832869, now seen corresponding path program 1 times [2020-07-07 13:23:15,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:15,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040676518] [2020-07-07 13:23:15,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:15,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:23:15,094 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:23:15,107 INFO L168 Benchmark]: Toolchain (without parser) took 5778.69 ms. Allocated memory was 144.2 MB in the beginning and 293.6 MB in the end (delta: 149.4 MB). Free memory was 100.0 MB in the beginning and 207.2 MB in the end (delta: -107.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,117 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.96 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 168.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,120 INFO L168 Benchmark]: Boogie Preprocessor took 66.25 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 165.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,121 INFO L168 Benchmark]: RCFGBuilder took 724.07 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 116.7 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,122 INFO L168 Benchmark]: TraceAbstraction took 4359.19 ms. Allocated memory was 201.9 MB in the beginning and 293.6 MB in the end (delta: 91.8 MB). Free memory was 116.0 MB in the beginning and 207.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 560.6 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:15,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.96 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 168.0 MB in the end (delta: -68.2 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.25 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 165.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.07 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 116.7 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4359.19 ms. Allocated memory was 201.9 MB in the beginning and 293.6 MB in the end (delta: 91.8 MB). Free memory was 116.0 MB in the beginning and 207.2 MB in the end (delta: -91.2 MB). Peak memory consumption was 560.6 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...