/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:26:20,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:26:20,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:26:20,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:26:20,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:26:20,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:26:20,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:26:20,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:26:20,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:26:20,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:26:20,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:26:20,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:26:20,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:26:20,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:26:20,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:26:20,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:26:20,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:26:20,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:26:20,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:26:20,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:26:20,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:26:20,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:26:20,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:26:20,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:26:20,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:26:20,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:26:20,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:26:20,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:26:20,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:26:20,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:26:20,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:26:20,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:26:20,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:26:20,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:26:20,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:26:20,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:26:20,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:26:20,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:26:20,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:26:20,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:26:20,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:26:20,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:26:20,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:26:20,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:26:20,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:26:20,445 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:26:20,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:26:20,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:26:20,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:26:20,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:26:20,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:26:20,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:26:20,447 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:26:20,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:26:20,448 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:26:20,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:26:20,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:26:20,448 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:26:20,449 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:26:20,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:26:20,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:20,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:26:20,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:26:20,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:26:20,450 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:26:20,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:26:20,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:26:20,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:26:20,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:26:20,778 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:26:20,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-17 17:26:20,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7528f1ae/54b06e3bec384b35bb73bf70f5933dc7/FLAG8dd03a9d9 [2020-07-17 17:26:21,424 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:26:21,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-17 17:26:21,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7528f1ae/54b06e3bec384b35bb73bf70f5933dc7/FLAG8dd03a9d9 [2020-07-17 17:26:21,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7528f1ae/54b06e3bec384b35bb73bf70f5933dc7 [2020-07-17 17:26:21,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:26:21,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:26:21,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:21,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:26:21,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:26:21,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:21" (1/1) ... [2020-07-17 17:26:21,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14484648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:21, skipping insertion in model container [2020-07-17 17:26:21,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:21" (1/1) ... [2020-07-17 17:26:21,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:26:21,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:26:22,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:22,281 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:26:22,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:22,394 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:26:22,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22 WrapperNode [2020-07-17 17:26:22,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:22,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:26:22,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:26:22,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:26:22,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... [2020-07-17 17:26:22,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:26:22,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:26:22,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:26:22,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:26:22,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:26:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-17 17:26:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:26:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:26:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 17:26:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-17 17:26:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-17 17:26:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-17 17:26:22,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-17 17:26:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-17 17:26:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-17 17:26:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-17 17:26:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 17:26:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-17 17:26:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-17 17:26:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-17 17:26:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-17 17:26:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-17 17:26:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-17 17:26:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-17 17:26:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-17 17:26:22,538 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-17 17:26:22,539 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:26:22,540 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-17 17:26:22,541 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-17 17:26:22,542 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:26:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:26:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 17:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:26:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:26:23,066 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:26:23,066 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:26:23,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:23 BoogieIcfgContainer [2020-07-17 17:26:23,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:26:23,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:26:23,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:26:23,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:26:23,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:26:21" (1/3) ... [2020-07-17 17:26:23,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55066caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:23, skipping insertion in model container [2020-07-17 17:26:23,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:22" (2/3) ... [2020-07-17 17:26:23,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55066caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:23, skipping insertion in model container [2020-07-17 17:26:23,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:23" (3/3) ... [2020-07-17 17:26:23,082 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-07-17 17:26:23,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:26:23,101 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:26:23,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:26:23,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:26:23,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:26:23,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:26:23,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:26:23,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:26:23,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:26:23,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:26:23,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:26:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-07-17 17:26:23,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 17:26:23,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:23,167 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] [2020-07-17 17:26:23,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:23,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-07-17 17:26:23,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:23,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722863920] [2020-07-17 17:26:23,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:23,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722863920] [2020-07-17 17:26:23,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:23,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 17:26:23,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015647760] [2020-07-17 17:26:23,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:26:23,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:23,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:26:23,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:26:23,532 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-07-17 17:26:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:24,022 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-07-17 17:26:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 17:26:24,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-17 17:26:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:24,038 INFO L225 Difference]: With dead ends: 128 [2020-07-17 17:26:24,038 INFO L226 Difference]: Without dead ends: 67 [2020-07-17 17:26:24,044 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 [2020-07-17 17:26:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-17 17:26:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-07-17 17:26:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-17 17:26:24,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-07-17 17:26:24,107 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-07-17 17:26:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:24,108 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-07-17 17:26:24,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:26:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-17 17:26:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 17:26:24,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:24,111 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] [2020-07-17 17:26:24,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:26:24,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:24,113 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-07-17 17:26:24,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:24,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735993401] [2020-07-17 17:26:24,114 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 17:26:24,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735993401] [2020-07-17 17:26:24,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:24,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 17:26:24,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427445758] [2020-07-17 17:26:24,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:26:24,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:24,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:26:24,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:26:24,443 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-07-17 17:26:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:24,740 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2020-07-17 17:26:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:26:24,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-07-17 17:26:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:24,743 INFO L225 Difference]: With dead ends: 102 [2020-07-17 17:26:24,743 INFO L226 Difference]: Without dead ends: 73 [2020-07-17 17:26:24,745 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 [2020-07-17 17:26:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-17 17:26:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-07-17 17:26:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-17 17:26:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-07-17 17:26:24,765 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-07-17 17:26:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:24,765 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-07-17 17:26:24,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:26:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-07-17 17:26:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 17:26:24,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:24,768 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] [2020-07-17 17:26:24,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:26:24,768 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-07-17 17:26:24,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:24,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282804385] [2020-07-17 17:26:24,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 17:26:25,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282804385] [2020-07-17 17:26:25,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:25,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-07-17 17:26:25,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517175476] [2020-07-17 17:26:25,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 17:26:25,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:25,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 17:26:25,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-17 17:26:25,209 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 17 states. [2020-07-17 17:26:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:26,577 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-07-17 17:26:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 17:26:26,580 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-07-17 17:26:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:26,622 INFO L225 Difference]: With dead ends: 124 [2020-07-17 17:26:26,622 INFO L226 Difference]: Without dead ends: 121 [2020-07-17 17:26:26,624 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 [2020-07-17 17:26:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-17 17:26:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2020-07-17 17:26:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-17 17:26:26,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2020-07-17 17:26:26,677 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 61 [2020-07-17 17:26:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:26,680 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2020-07-17 17:26:26,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 17:26:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2020-07-17 17:26:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 17:26:26,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:26,690 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] [2020-07-17 17:26:26,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:26:26,690 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:26,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1260495361, now seen corresponding path program 1 times [2020-07-17 17:26:26,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:26,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285423408] [2020-07-17 17:26:26,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-17 17:26:26,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285423408] [2020-07-17 17:26:26,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:26,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 17:26:26,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197783430] [2020-07-17 17:26:26,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:26:26,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:26,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:26:26,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:26:26,913 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 9 states. [2020-07-17 17:26:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:27,168 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2020-07-17 17:26:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:26:27,169 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-07-17 17:26:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:27,171 INFO L225 Difference]: With dead ends: 147 [2020-07-17 17:26:27,171 INFO L226 Difference]: Without dead ends: 94 [2020-07-17 17:26:27,172 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 [2020-07-17 17:26:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-17 17:26:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-07-17 17:26:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-17 17:26:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-07-17 17:26:27,193 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-07-17 17:26:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:27,193 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-07-17 17:26:27,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:26:27,193 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-07-17 17:26:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-17 17:26:27,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:27,195 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] [2020-07-17 17:26:27,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:26:27,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:27,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-07-17 17:26:27,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:27,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515479822] [2020-07-17 17:26:27,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 17:26:27,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515479822] [2020-07-17 17:26:27,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:27,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-07-17 17:26:27,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596873831] [2020-07-17 17:26:27,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 17:26:27,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:27,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 17:26:27,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:26:27,501 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 18 states. [2020-07-17 17:26:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:28,484 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-07-17 17:26:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 17:26:28,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-07-17 17:26:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:28,487 INFO L225 Difference]: With dead ends: 113 [2020-07-17 17:26:28,490 INFO L226 Difference]: Without dead ends: 104 [2020-07-17 17:26:28,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 17:26:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-07-17 17:26:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-07-17 17:26:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-17 17:26:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-07-17 17:26:28,526 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 70 [2020-07-17 17:26:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:28,527 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-07-17 17:26:28,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 17:26:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-07-17 17:26:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-17 17:26:28,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:28,529 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] [2020-07-17 17:26:28,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:26:28,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:28,530 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-07-17 17:26:28,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:28,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002034363] [2020-07-17 17:26:28,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 17:26:28,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002034363] [2020-07-17 17:26:28,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:28,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-17 17:26:28,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590949792] [2020-07-17 17:26:28,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 17:26:28,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:28,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 17:26:28,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-07-17 17:26:28,932 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 23 states. [2020-07-17 17:26:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:30,507 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-07-17 17:26:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 17:26:30,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-07-17 17:26:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:30,511 INFO L225 Difference]: With dead ends: 112 [2020-07-17 17:26:30,511 INFO L226 Difference]: Without dead ends: 105 [2020-07-17 17:26:30,513 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 [2020-07-17 17:26:30,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-17 17:26:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-07-17 17:26:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-17 17:26:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-07-17 17:26:30,530 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 71 [2020-07-17 17:26:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:30,530 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-07-17 17:26:30,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 17:26:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-07-17 17:26:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-17 17:26:30,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:30,533 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] [2020-07-17 17:26:30,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:26:30,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-07-17 17:26:30,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:30,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27810421] [2020-07-17 17:26:30,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:31,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 17:26:31,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27810421] [2020-07-17 17:26:31,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:31,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-07-17 17:26:31,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893336892] [2020-07-17 17:26:31,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-17 17:26:31,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:31,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-17 17:26:31,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:26:31,035 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 24 states. [2020-07-17 17:26:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:32,564 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-07-17 17:26:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 17:26:32,565 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-07-17 17:26:32,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:32,568 INFO L225 Difference]: With dead ends: 118 [2020-07-17 17:26:32,568 INFO L226 Difference]: Without dead ends: 113 [2020-07-17 17:26:32,570 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 [2020-07-17 17:26:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-17 17:26:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-07-17 17:26:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-17 17:26:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-07-17 17:26:32,589 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 85 [2020-07-17 17:26:32,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:32,589 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-07-17 17:26:32,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-17 17:26:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-07-17 17:26:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-17 17:26:32,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:32,599 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] [2020-07-17 17:26:32,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:26:32,599 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1173492322, now seen corresponding path program 2 times [2020-07-17 17:26:32,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:32,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037443933] [2020-07-17 17:26:32,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-17 17:26:32,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037443933] [2020-07-17 17:26:32,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:32,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 17:26:32,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951021150] [2020-07-17 17:26:32,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:26:32,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:32,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:26:32,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:26:32,788 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-07-17 17:26:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:33,308 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-07-17 17:26:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:26:33,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-07-17 17:26:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:33,311 INFO L225 Difference]: With dead ends: 127 [2020-07-17 17:26:33,311 INFO L226 Difference]: Without dead ends: 111 [2020-07-17 17:26:33,311 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 [2020-07-17 17:26:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-17 17:26:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-07-17 17:26:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-17 17:26:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-07-17 17:26:33,331 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 85 [2020-07-17 17:26:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:33,332 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-07-17 17:26:33,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:26:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-07-17 17:26:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-17 17:26:33,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:33,334 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] [2020-07-17 17:26:33,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:26:33,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-07-17 17:26:33,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:33,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905033106] [2020-07-17 17:26:33,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 17:26:33,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905033106] [2020-07-17 17:26:33,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:33,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-17 17:26:33,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12137149] [2020-07-17 17:26:33,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 17:26:33,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:33,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 17:26:33,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-07-17 17:26:33,750 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 23 states. [2020-07-17 17:26:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:35,084 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-07-17 17:26:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 17:26:35,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-07-17 17:26:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:35,086 INFO L225 Difference]: With dead ends: 129 [2020-07-17 17:26:35,087 INFO L226 Difference]: Without dead ends: 112 [2020-07-17 17:26:35,090 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 [2020-07-17 17:26:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-17 17:26:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-07-17 17:26:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-07-17 17:26:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-07-17 17:26:35,119 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 86 [2020-07-17 17:26:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:35,120 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-07-17 17:26:35,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 17:26:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-07-17 17:26:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-17 17:26:35,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:35,122 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] [2020-07-17 17:26:35,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:26:35,122 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -305538175, now seen corresponding path program 2 times [2020-07-17 17:26:35,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:35,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144881295] [2020-07-17 17:26:35,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-17 17:26:35,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144881295] [2020-07-17 17:26:35,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:35,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-07-17 17:26:35,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905966117] [2020-07-17 17:26:35,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 17:26:35,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:35,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 17:26:35,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-07-17 17:26:35,479 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 19 states. [2020-07-17 17:26:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:36,717 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-07-17 17:26:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 17:26:36,717 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-07-17 17:26:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:36,719 INFO L225 Difference]: With dead ends: 144 [2020-07-17 17:26:36,719 INFO L226 Difference]: Without dead ends: 131 [2020-07-17 17:26:36,720 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 [2020-07-17 17:26:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-07-17 17:26:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-07-17 17:26:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-17 17:26:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-07-17 17:26:36,737 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 86 [2020-07-17 17:26:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:36,737 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-07-17 17:26:36,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 17:26:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-07-17 17:26:36,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-17 17:26:36,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:36,739 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] [2020-07-17 17:26:36,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:26:36,739 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:36,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:36,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1959566780, now seen corresponding path program 1 times [2020-07-17 17:26:36,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:36,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175774590] [2020-07-17 17:26:36,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-07-17 17:26:37,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175774590] [2020-07-17 17:26:37,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:37,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-07-17 17:26:37,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647959204] [2020-07-17 17:26:37,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 17:26:37,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:37,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 17:26:37,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-07-17 17:26:37,127 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 19 states. [2020-07-17 17:26:38,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:38,472 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-07-17 17:26:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-17 17:26:38,473 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-07-17 17:26:38,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:38,474 INFO L225 Difference]: With dead ends: 137 [2020-07-17 17:26:38,474 INFO L226 Difference]: Without dead ends: 108 [2020-07-17 17:26:38,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-07-17 17:26:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-17 17:26:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-07-17 17:26:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-17 17:26:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-07-17 17:26:38,499 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 94 [2020-07-17 17:26:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:38,500 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-07-17 17:26:38,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 17:26:38,500 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-07-17 17:26:38,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-17 17:26:38,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:38,502 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] [2020-07-17 17:26:38,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:26:38,503 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:38,503 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-07-17 17:26:38,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:38,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003950688] [2020-07-17 17:26:38,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:26:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:26:38,603 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:26:38,603 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:26:38,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 17:26:38,656 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,657 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,658 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,659 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,660 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,660 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 17:26:38,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:26:38 BoogieIcfgContainer [2020-07-17 17:26:38,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:26:38,750 INFO L168 Benchmark]: Toolchain (without parser) took 17018.02 ms. Allocated memory was 145.2 MB in the beginning and 412.6 MB in the end (delta: 267.4 MB). Free memory was 101.7 MB in the beginning and 376.3 MB in the end (delta: -274.6 MB). Peak memory consumption was 283.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,751 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.24 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.3 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,753 INFO L168 Benchmark]: Boogie Preprocessor took 61.67 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 165.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,754 INFO L168 Benchmark]: RCFGBuilder took 613.75 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 118.4 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,754 INFO L168 Benchmark]: TraceAbstraction took 15675.43 ms. Allocated memory was 203.4 MB in the beginning and 412.6 MB in the end (delta: 209.2 MB). Free memory was 117.8 MB in the beginning and 376.3 MB in the end (delta: -258.5 MB). Peak memory consumption was 241.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:38,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.24 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.3 MB in the end (delta: -67.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.67 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 165.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 613.75 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 118.4 MB in the end (delta: 46.6 MB). Peak memory consumption was 46.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15675.43 ms. Allocated memory was 203.4 MB in the beginning and 412.6 MB in the end (delta: 209.2 MB). Free memory was 117.8 MB in the beginning and 376.3 MB in the end (delta: -258.5 MB). Peak memory consumption was 241.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * 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; VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=11, \old(guard_malloc_counter)=12, \old(head)=null, \old(head)=null, elem={14:9}, guard_malloc_counter={0:0}, head={16:13}] [L887] struct list_head *elem = ((void *)0); VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={16:13}] [L900] static struct list_head head; VAL [\old(elem)=9, \old(elem)=14, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}, size=8] [L872] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L873] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L872] guard_malloc_counter++ VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L873] COND FALSE !(!__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] return __getMemory(size); VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=1, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, __VERIFIER_nondet_int()=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L6] __VERIFIER_error() VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.4s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 663 SDtfs, 1107 SDslu, 2379 SDs, 0 SdLazy, 7727 SolverSat, 622 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 6.5s 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 73 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 875 NumberOfCodeBlocks, 875 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 770 ConstructedInterpolants, 0 QuantifiedInterpolants, 225364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 170/259 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...