/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/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:04:57,027 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:04:57,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:04:57,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:04:57,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:04:57,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:04:57,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:04:57,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:04:57,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:04:57,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:04:57,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:04:57,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:04:57,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:04:57,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:04:57,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:04:57,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:04:57,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:04:57,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:04:57,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:04:57,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:04:57,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:04:57,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:04:57,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:04:57,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:04:57,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:04:57,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:04:57,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:04:57,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:04:57,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:04:57,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:04:57,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:04:57,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:04:57,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:04:57,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:04:57,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:04:57,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:04:57,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:04:57,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:04:57,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:04:57,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:04:57,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:04:57,149 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:04:57,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:04:57,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:04:57,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:04:57,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:04:57,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:04:57,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:04:57,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:04:57,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:04:57,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:04:57,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:04:57,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:04:57,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:04:57,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:04:57,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:04:57,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:04:57,174 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:04:57,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:04:57,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:04:57,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:57,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:04:57,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:04:57,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:04:57,175 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:04:57,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:04:57,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:04:57,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:04:57,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:04:57,501 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:04:57,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-22 19:04:57,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ae640b6/5b8aaebab75b4ce588716ed78a44fbf0/FLAGd99cea18b [2020-08-22 19:04:58,130 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:04:58,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-08-22 19:04:58,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ae640b6/5b8aaebab75b4ce588716ed78a44fbf0/FLAGd99cea18b [2020-08-22 19:04:58,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34ae640b6/5b8aaebab75b4ce588716ed78a44fbf0 [2020-08-22 19:04:58,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:04:58,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:04:58,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:58,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:04:58,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:04:58,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:58" (1/1) ... [2020-08-22 19:04:58,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a007d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:58, skipping insertion in model container [2020-08-22 19:04:58,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:58" (1/1) ... [2020-08-22 19:04:58,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:04:58,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:04:58,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:58,987 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:04:59,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:59,132 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:04:59,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59 WrapperNode [2020-08-22 19:04:59,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:59,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:04:59,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:04:59,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:04:59,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... [2020-08-22 19:04:59,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:04:59,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:04:59,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:04:59,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:04:59,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-22 19:04:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-22 19:04:59,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-22 19:04:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-22 19:04:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-22 19:04:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-22 19:04:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-22 19:04:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-22 19:04:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-22 19:04:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-22 19:04:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-22 19:04:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-22 19:04:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-22 19:04:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-22 19:04:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-22 19:04:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-22 19:04:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-22 19:04:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-22 19:04:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-22 19:04:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-22 19:04:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-22 19:04:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 19:04:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-22 19:04:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-22 19:04:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-22 19:04:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-22 19:04:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-22 19:04:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-22 19:04:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-22 19:04:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-22 19:04:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-22 19:04:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-22 19:04:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-22 19:04:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-22 19:04:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-22 19:04:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-22 19:04:59,278 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-22 19:04:59,279 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-22 19:04:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-22 19:04:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-22 19:04:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-22 19:04:59,280 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-22 19:04:59,281 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-22 19:04:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-22 19:04:59,282 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-22 19:04:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:04:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-22 19:04:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-22 19:04:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-22 19:04:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-22 19:04:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-22 19:04:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-22 19:04:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-22 19:04:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-22 19:04:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-22 19:04:59,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:04:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-22 19:04:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-22 19:04:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-22 19:04:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-22 19:04:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:04:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:04:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:04:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 19:04:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:04:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:04:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:04:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:04:59,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:04:59,807 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 19:04:59,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:59 BoogieIcfgContainer [2020-08-22 19:04:59,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:04:59,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:04:59,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:04:59,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:04:59,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:04:58" (1/3) ... [2020-08-22 19:04:59,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212aeda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:59, skipping insertion in model container [2020-08-22 19:04:59,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:59" (2/3) ... [2020-08-22 19:04:59,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212aeda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:59, skipping insertion in model container [2020-08-22 19:04:59,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:59" (3/3) ... [2020-08-22 19:04:59,840 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-08-22 19:04:59,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:04:59,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:04:59,877 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:04:59,905 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:04:59,906 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:04:59,906 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:04:59,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:04:59,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:04:59,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:04:59,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:04:59,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:04:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-08-22 19:04:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 19:04:59,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:59,946 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] [2020-08-22 19:04:59,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-08-22 19:04:59,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:59,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213364469] [2020-08-22 19:04:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:00,035 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:05:00,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213364469] [2020-08-22 19:05:00,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:00,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:05:00,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745527640] [2020-08-22 19:05:00,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:05:00,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:00,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:05:00,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:05:00,326 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-08-22 19:05:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:00,803 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-08-22 19:05:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:05:00,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-08-22 19:05:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:00,824 INFO L225 Difference]: With dead ends: 128 [2020-08-22 19:05:00,824 INFO L226 Difference]: Without dead ends: 67 [2020-08-22 19:05:00,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:05:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-08-22 19:05:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-08-22 19:05:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 19:05:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-08-22 19:05:00,922 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-08-22 19:05:00,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:00,923 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-08-22 19:05:00,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:05:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-08-22 19:05:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 19:05:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:00,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:00,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:05:00,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:00,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-08-22 19:05:00,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:00,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334378917] [2020-08-22 19:05:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:00,948 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 19:05:01,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [334378917] [2020-08-22 19:05:01,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:01,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:05:01,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720368360] [2020-08-22 19:05:01,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:05:01,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:01,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:05:01,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:05:01,239 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-08-22 19:05:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:01,599 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-08-22 19:05:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:05:01,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 19:05:01,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:01,604 INFO L225 Difference]: With dead ends: 99 [2020-08-22 19:05:01,604 INFO L226 Difference]: Without dead ends: 73 [2020-08-22 19:05:01,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:05:01,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-08-22 19:05:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-08-22 19:05:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 19:05:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-08-22 19:05:01,646 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-08-22 19:05:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-08-22 19:05:01,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:05:01,648 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-08-22 19:05:01,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 19:05:01,653 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:01,653 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:01,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:05:01,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:01,654 INFO L82 PathProgramCache]: Analyzing trace with hash -577094017, now seen corresponding path program 1 times [2020-08-22 19:05:01,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:01,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352210942] [2020-08-22 19:05:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:01,662 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-22 19:05:01,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352210942] [2020-08-22 19:05:01,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:01,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:05:01,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254561705] [2020-08-22 19:05:01,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:05:01,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:01,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:05:01,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:05:01,988 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-08-22 19:05:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:02,289 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-08-22 19:05:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:05:02,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 19:05:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:02,292 INFO L225 Difference]: With dead ends: 102 [2020-08-22 19:05:02,292 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 19:05:02,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:05:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 19:05:02,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-08-22 19:05:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 19:05:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-08-22 19:05:02,306 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-08-22 19:05:02,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:02,307 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-08-22 19:05:02,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:05:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-08-22 19:05:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 19:05:02,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:02,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:02,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:05:02,309 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:02,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:02,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-08-22 19:05:02,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:02,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941044303] [2020-08-22 19:05:02,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:02,314 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:02,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 19:05:02,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941044303] [2020-08-22 19:05:02,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:02,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 19:05:02,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985483926] [2020-08-22 19:05:02,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 19:05:02,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:02,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 19:05:02,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:05:02,705 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 17 states. [2020-08-22 19:05:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:03,843 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-08-22 19:05:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 19:05:03,845 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-08-22 19:05:03,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:03,849 INFO L225 Difference]: With dead ends: 108 [2020-08-22 19:05:03,849 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 19:05:03,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:05:03,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 19:05:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-08-22 19:05:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 19:05:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-08-22 19:05:03,898 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-08-22 19:05:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:03,903 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-08-22 19:05:03,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 19:05:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-08-22 19:05:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 19:05:03,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:03,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:03,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:05:03,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-08-22 19:05:03,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162539537] [2020-08-22 19:05:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:03,920 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 19:05:04,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162539537] [2020-08-22 19:05:04,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:04,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 19:05:04,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057489111] [2020-08-22 19:05:04,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 19:05:04,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:04,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 19:05:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-22 19:05:04,396 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 18 states. [2020-08-22 19:05:05,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:05,577 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-08-22 19:05:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:05:05,578 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-08-22 19:05:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:05,580 INFO L225 Difference]: With dead ends: 113 [2020-08-22 19:05:05,580 INFO L226 Difference]: Without dead ends: 104 [2020-08-22 19:05:05,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 19:05:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-22 19:05:05,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-08-22 19:05:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 19:05:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-08-22 19:05:05,605 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 70 [2020-08-22 19:05:05,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:05,605 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-08-22 19:05:05,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 19:05:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-08-22 19:05:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 19:05:05,607 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:05,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:05,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:05:05,608 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:05,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:05,608 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-08-22 19:05:05,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:05,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626558114] [2020-08-22 19:05:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:05,612 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:05,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 19:05:06,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626558114] [2020-08-22 19:05:06,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:06,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-08-22 19:05:06,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339162427] [2020-08-22 19:05:06,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 19:05:06,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:06,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 19:05:06,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:05:06,016 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 23 states. [2020-08-22 19:05:07,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:07,714 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-08-22 19:05:07,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:05:07,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-08-22 19:05:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:07,717 INFO L225 Difference]: With dead ends: 112 [2020-08-22 19:05:07,717 INFO L226 Difference]: Without dead ends: 105 [2020-08-22 19:05:07,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 19:05:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-08-22 19:05:07,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-08-22 19:05:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 19:05:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-08-22 19:05:07,741 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 71 [2020-08-22 19:05:07,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:07,741 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-08-22 19:05:07,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 19:05:07,741 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-08-22 19:05:07,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 19:05:07,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:07,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:07,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:05:07,744 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:07,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:07,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-08-22 19:05:07,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:07,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357995288] [2020-08-22 19:05:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:07,748 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:07,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:07,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:07,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:08,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 19:05:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 19:05:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 19:05:08,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357995288] [2020-08-22 19:05:08,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:08,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-08-22 19:05:08,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709299070] [2020-08-22 19:05:08,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 19:05:08,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:08,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 19:05:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:05:08,186 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 24 states. [2020-08-22 19:05:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:09,697 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-08-22 19:05:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:05:09,698 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-08-22 19:05:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:09,701 INFO L225 Difference]: With dead ends: 118 [2020-08-22 19:05:09,702 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 19:05:09,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 19:05:09,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 19:05:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-08-22 19:05:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-08-22 19:05:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-08-22 19:05:09,723 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 85 [2020-08-22 19:05:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:09,723 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-08-22 19:05:09,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 19:05:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-08-22 19:05:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 19:05:09,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:09,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:09,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:05:09,726 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:09,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1173492322, now seen corresponding path program 2 times [2020-08-22 19:05:09,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:09,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23167970] [2020-08-22 19:05:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:09,729 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 19:05:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 19:05:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 19:05:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23167970] [2020-08-22 19:05:09,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:09,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:05:09,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410060549] [2020-08-22 19:05:09,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:05:09,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:09,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:05:09,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:05:09,929 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-08-22 19:05:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:10,481 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-08-22 19:05:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:05:10,482 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-08-22 19:05:10,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:10,484 INFO L225 Difference]: With dead ends: 127 [2020-08-22 19:05:10,484 INFO L226 Difference]: Without dead ends: 111 [2020-08-22 19:05:10,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-08-22 19:05:10,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-22 19:05:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-22 19:05:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 19:05:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-08-22 19:05:10,522 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 85 [2020-08-22 19:05:10,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:10,524 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-08-22 19:05:10,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:05:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-08-22 19:05:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 19:05:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:10,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:10,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:05:10,526 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-08-22 19:05:10,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:10,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642851519] [2020-08-22 19:05:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:10,531 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 19:05:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 19:05:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 19:05:10,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642851519] [2020-08-22 19:05:10,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:10,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-08-22 19:05:10,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090502131] [2020-08-22 19:05:10,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 19:05:10,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 19:05:10,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:05:10,917 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 23 states. [2020-08-22 19:05:12,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:12,378 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-08-22 19:05:12,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:05:12,378 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-08-22 19:05:12,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:12,380 INFO L225 Difference]: With dead ends: 129 [2020-08-22 19:05:12,380 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 19:05:12,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 19:05:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 19:05:12,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-08-22 19:05:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-22 19:05:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-08-22 19:05:12,403 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 86 [2020-08-22 19:05:12,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:12,405 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-08-22 19:05:12,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 19:05:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-08-22 19:05:12,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-22 19:05:12,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:12,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:12,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:05:12,407 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash -305538175, now seen corresponding path program 2 times [2020-08-22 19:05:12,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:12,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701090278] [2020-08-22 19:05:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:12,413 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 19:05:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 19:05:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 19:05:12,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701090278] [2020-08-22 19:05:12,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:12,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-08-22 19:05:12,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661321477] [2020-08-22 19:05:12,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 19:05:12,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:12,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 19:05:12,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:05:12,817 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 19 states. [2020-08-22 19:05:14,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:14,098 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-08-22 19:05:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 19:05:14,099 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-08-22 19:05:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:14,121 INFO L225 Difference]: With dead ends: 144 [2020-08-22 19:05:14,121 INFO L226 Difference]: Without dead ends: 131 [2020-08-22 19:05:14,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2020-08-22 19:05:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-22 19:05:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-08-22 19:05:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 19:05:14,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-08-22 19:05:14,162 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 86 [2020-08-22 19:05:14,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:14,163 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-08-22 19:05:14,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 19:05:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-08-22 19:05:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 19:05:14,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:14,165 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:14,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:05:14,166 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:14,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1959566780, now seen corresponding path program 1 times [2020-08-22 19:05:14,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:14,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611386213] [2020-08-22 19:05:14,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:14,174 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:05:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:05:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 19:05:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:05:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 19:05:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 19:05:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-22 19:05:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 19:05:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:05:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 19:05:14,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611386213] [2020-08-22 19:05:14,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:05:14,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-08-22 19:05:14,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865239105] [2020-08-22 19:05:14,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 19:05:14,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:05:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 19:05:14,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:05:14,655 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 19 states. [2020-08-22 19:05:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:05:15,961 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-08-22 19:05:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 19:05:15,962 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-08-22 19:05:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:05:15,963 INFO L225 Difference]: With dead ends: 137 [2020-08-22 19:05:15,963 INFO L226 Difference]: Without dead ends: 108 [2020-08-22 19:05:15,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-08-22 19:05:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-08-22 19:05:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-08-22 19:05:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 19:05:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-08-22 19:05:15,980 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 94 [2020-08-22 19:05:15,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:05:15,981 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-08-22 19:05:15,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 19:05:15,981 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-08-22 19:05:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-22 19:05:15,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:05:15,982 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:05:15,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:05:15,983 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:05:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:05:15,983 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-08-22 19:05:15,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:05:15,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124029322] [2020-08-22 19:05:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:05:15,987 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:05:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:05:16,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:05:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:05:16,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:05:16,069 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:05:16,070 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:05:16,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 19:05:16,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:05:16 BoogieIcfgContainer [2020-08-22 19:05:16,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:05:16,097 INFO L168 Benchmark]: Toolchain (without parser) took 17638.29 ms. Allocated memory was 140.5 MB in the beginning and 386.4 MB in the end (delta: 245.9 MB). Free memory was 101.7 MB in the beginning and 293.3 MB in the end (delta: -191.6 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,098 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.39 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 101.5 MB in the beginning and 172.9 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,100 INFO L168 Benchmark]: Boogie Preprocessor took 53.39 ms. Allocated memory is still 207.6 MB. Free memory was 172.9 MB in the beginning and 169.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,100 INFO L168 Benchmark]: RCFGBuilder took 632.76 ms. Allocated memory is still 207.6 MB. Free memory was 169.8 MB in the beginning and 122.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,101 INFO L168 Benchmark]: TraceAbstraction took 16273.08 ms. Allocated memory was 207.6 MB in the beginning and 386.4 MB in the end (delta: 178.8 MB). Free memory was 122.2 MB in the beginning and 293.3 MB in the end (delta: -171.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:05:16,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.39 ms. Allocated memory was 140.5 MB in the beginning and 207.6 MB in the end (delta: 67.1 MB). Free memory was 101.5 MB in the beginning and 172.9 MB in the end (delta: -71.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.39 ms. Allocated memory is still 207.6 MB. Free memory was 172.9 MB in the beginning and 169.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 632.76 ms. Allocated memory is still 207.6 MB. Free memory was 169.8 MB in the beginning and 122.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16273.08 ms. Allocated memory was 207.6 MB in the beginning and 386.4 MB in the end (delta: 178.8 MB). Free memory was 122.2 MB in the beginning and 293.3 MB in the end (delta: -171.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; [L903] struct list_head *dev1, *dev2; [L904] CALL, EXPR my_malloc(sizeof(*dev1)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L907] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L907] RET list_add(dev2, &head) [L908] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L908] RET list_add(dev1, &head) [L909] CALL list_del(dev2) [L896] COND FALSE !(entry==elem) [L909] RET list_del(dev2) [L910] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) [L913] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L890] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.1s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 11.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1113 SDslu, 2232 SDs, 0 SdLazy, 7486 SolverSat, 605 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...