/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/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:28:06,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:28:06,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:28:06,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:28:06,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:28:06,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:28:06,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:28:06,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:28:06,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:28:06,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:28:06,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:28:06,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:28:06,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:28:06,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:28:06,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:28:06,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:28:06,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:28:06,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:28:06,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:28:06,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:28:06,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:28:06,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:28:06,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:28:06,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:28:06,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:28:06,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:28:06,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:28:06,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:28:06,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:28:06,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:28:06,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:28:06,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:28:06,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:28:06,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:28:06,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:28:06,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:28:06,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:28:06,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:28:06,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:28:06,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:28:06,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:28:06,148 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 17:28:06,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:28:06,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:28:06,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:28:06,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:28:06,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:28:06,182 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:28:06,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:28:06,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:28:06,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:28:06,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:28:06,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:28:06,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:28:06,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:28:06,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:28:06,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:28:06,184 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:28:06,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:28:06,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:28:06,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:06,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:28:06,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:28:06,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:28:06,186 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 17:28:06,486 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:28:06,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:28:06,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:28:06,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:28:06,504 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:28:06,504 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-17 17:28:06,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95c9fea3/f97a1b1f7a4e4aa482084b7b429eb6b8/FLAG91dfab0f5 [2020-07-17 17:28:07,105 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:28:07,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-17 17:28:07,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95c9fea3/f97a1b1f7a4e4aa482084b7b429eb6b8/FLAG91dfab0f5 [2020-07-17 17:28:07,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c95c9fea3/f97a1b1f7a4e4aa482084b7b429eb6b8 [2020-07-17 17:28:07,381 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:28:07,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:28:07,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:07,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:28:07,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:28:07,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:07" (1/1) ... [2020-07-17 17:28:07,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ab5e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:07, skipping insertion in model container [2020-07-17 17:28:07,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:07" (1/1) ... [2020-07-17 17:28:07,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:28:07,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:28:07,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:07,877 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:28:07,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:08,033 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:28:08,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08 WrapperNode [2020-07-17 17:28:08,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:08,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:28:08,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:28:08,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:28:08,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (1/1) ... [2020-07-17 17:28:08,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:28:08,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:28:08,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:28:08,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:28:08,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (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 17:28:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:28:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:28:08,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 17:28:08,179 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 17:28:08,180 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 17:28:08,181 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 17:28:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 17:28:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 17:28:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 17:28:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 17:28:08,182 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 17:28:08,183 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 17:28:08,184 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 17:28:08,185 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 17:28:08,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:28:08,187 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 17:28:08,188 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 17:28:08,189 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 17:28:08,190 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 17:28:08,191 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 17:28:08,192 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 17:28:08,193 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 17:28:08,194 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:28:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:28:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:28:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:28:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:28:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:28:08,867 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:28:08,867 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-17 17:28:08,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:08 BoogieIcfgContainer [2020-07-17 17:28:08,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:28:08,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:28:08,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:28:08,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:28:08,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:28:07" (1/3) ... [2020-07-17 17:28:08,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e24eed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:08, skipping insertion in model container [2020-07-17 17:28:08,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:08" (2/3) ... [2020-07-17 17:28:08,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e24eed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:08, skipping insertion in model container [2020-07-17 17:28:08,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:08" (3/3) ... [2020-07-17 17:28:08,881 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-17 17:28:08,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:28:08,899 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-17 17:28:08,911 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-17 17:28:08,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:28:08,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:28:08,931 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:28:08,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:28:08,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:28:08,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:28:08,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:28:08,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:28:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-07-17 17:28:08,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 17:28:08,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:08,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:08,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:08,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-07-17 17:28:08,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:08,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518766997] [2020-07-17 17:28:08,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:09,222 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 17:28:09,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518766997] [2020-07-17 17:28:09,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:09,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 17:28:09,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551540856] [2020-07-17 17:28:09,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 17:28:09,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:09,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 17:28:09,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:28:09,251 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-07-17 17:28:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:09,734 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-07-17 17:28:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 17:28:09,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-17 17:28:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:09,749 INFO L225 Difference]: With dead ends: 359 [2020-07-17 17:28:09,749 INFO L226 Difference]: Without dead ends: 194 [2020-07-17 17:28:09,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-07-17 17:28:09,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-07-17 17:28:09,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-17 17:28:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-07-17 17:28:09,822 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-07-17 17:28:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:09,823 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-07-17 17:28:09,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 17:28:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-07-17 17:28:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 17:28:09,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:09,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:09,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:28:09,825 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-07-17 17:28:09,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:09,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730960730] [2020-07-17 17:28:09,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:09,889 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 17:28:09,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730960730] [2020-07-17 17:28:09,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:09,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:09,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923306102] [2020-07-17 17:28:09,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:09,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:09,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:09,893 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-07-17 17:28:10,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:10,146 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-07-17 17:28:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:10,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-17 17:28:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:10,150 INFO L225 Difference]: With dead ends: 170 [2020-07-17 17:28:10,150 INFO L226 Difference]: Without dead ends: 165 [2020-07-17 17:28:10,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-17 17:28:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-17 17:28:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-17 17:28:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-07-17 17:28:10,177 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-07-17 17:28:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:10,178 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-07-17 17:28:10,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-07-17 17:28:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 17:28:10,179 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:10,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:10,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:28:10,180 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-07-17 17:28:10,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:10,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190338496] [2020-07-17 17:28:10,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:10,323 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 17:28:10,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190338496] [2020-07-17 17:28:10,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:10,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:28:10,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440899984] [2020-07-17 17:28:10,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:28:10,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:10,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:28:10,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:10,326 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-07-17 17:28:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:10,825 INFO L93 Difference]: Finished difference Result 255 states and 270 transitions. [2020-07-17 17:28:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:28:10,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-07-17 17:28:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:10,829 INFO L225 Difference]: With dead ends: 255 [2020-07-17 17:28:10,829 INFO L226 Difference]: Without dead ends: 250 [2020-07-17 17:28:10,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:28:10,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-07-17 17:28:10,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 159. [2020-07-17 17:28:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-17 17:28:10,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-07-17 17:28:10,880 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-07-17 17:28:10,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:10,880 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-07-17 17:28:10,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:28:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-07-17 17:28:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-17 17:28:10,882 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:10,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:10,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:28:10,885 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:10,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-07-17 17:28:10,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:10,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272636506] [2020-07-17 17:28:10,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,020 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 17:28:11,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272636506] [2020-07-17 17:28:11,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:11,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:28:11,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193953956] [2020-07-17 17:28:11,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:28:11,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:28:11,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:11,023 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-07-17 17:28:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:11,379 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-07-17 17:28:11,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 17:28:11,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-07-17 17:28:11,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:11,381 INFO L225 Difference]: With dead ends: 377 [2020-07-17 17:28:11,382 INFO L226 Difference]: Without dead ends: 249 [2020-07-17 17:28:11,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-17 17:28:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-07-17 17:28:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-17 17:28:11,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-07-17 17:28:11,403 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-07-17 17:28:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:11,403 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-07-17 17:28:11,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:28:11,403 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-07-17 17:28:11,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 17:28:11,404 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:11,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:11,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:28:11,405 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-07-17 17:28:11,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:11,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892194979] [2020-07-17 17:28:11,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,471 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 17:28:11,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892194979] [2020-07-17 17:28:11,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:11,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:28:11,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765070154] [2020-07-17 17:28:11,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:28:11,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:11,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:28:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:11,474 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 6 states. [2020-07-17 17:28:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:11,780 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-07-17 17:28:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:28:11,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-07-17 17:28:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:11,784 INFO L225 Difference]: With dead ends: 270 [2020-07-17 17:28:11,784 INFO L226 Difference]: Without dead ends: 238 [2020-07-17 17:28:11,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-17 17:28:11,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-07-17 17:28:11,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-17 17:28:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-07-17 17:28:11,806 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-07-17 17:28:11,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:11,806 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-07-17 17:28:11,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:28:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-07-17 17:28:11,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 17:28:11,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:11,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:11,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:28:11,818 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:11,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:11,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-07-17 17:28:11,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:11,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145764919] [2020-07-17 17:28:11,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,047 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 17:28:12,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145764919] [2020-07-17 17:28:12,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:12,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 17:28:12,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779112601] [2020-07-17 17:28:12,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:28:12,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:28:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:28:12,050 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 12 states. [2020-07-17 17:28:12,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:12,788 INFO L93 Difference]: Finished difference Result 286 states and 302 transitions. [2020-07-17 17:28:12,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:28:12,789 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-07-17 17:28:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:12,794 INFO L225 Difference]: With dead ends: 286 [2020-07-17 17:28:12,795 INFO L226 Difference]: Without dead ends: 282 [2020-07-17 17:28:12,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-07-17 17:28:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-17 17:28:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 176. [2020-07-17 17:28:12,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-07-17 17:28:12,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2020-07-17 17:28:12,825 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 42 [2020-07-17 17:28:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:12,825 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2020-07-17 17:28:12,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:28:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2020-07-17 17:28:12,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 17:28:12,827 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:12,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:12,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:28:12,828 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:12,829 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-07-17 17:28:12,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:12,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665086249] [2020-07-17 17:28:12,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,883 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 17:28:12,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665086249] [2020-07-17 17:28:12,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:12,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:12,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230424559] [2020-07-17 17:28:12,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:12,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:12,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:12,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:12,885 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 4 states. [2020-07-17 17:28:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:13,142 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2020-07-17 17:28:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:13,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-07-17 17:28:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:13,144 INFO L225 Difference]: With dead ends: 282 [2020-07-17 17:28:13,145 INFO L226 Difference]: Without dead ends: 215 [2020-07-17 17:28:13,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:13,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-07-17 17:28:13,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-07-17 17:28:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-07-17 17:28:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-07-17 17:28:13,178 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 43 [2020-07-17 17:28:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:13,179 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-07-17 17:28:13,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-07-17 17:28:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 17:28:13,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:13,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:13,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:28:13,181 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:13,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:13,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-07-17 17:28:13,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:13,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502351412] [2020-07-17 17:28:13,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,240 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 17:28:13,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502351412] [2020-07-17 17:28:13,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:13,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:13,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583355514] [2020-07-17 17:28:13,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:13,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:13,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:13,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:13,242 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 4 states. [2020-07-17 17:28:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:13,476 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-07-17 17:28:13,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:13,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-07-17 17:28:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:13,480 INFO L225 Difference]: With dead ends: 179 [2020-07-17 17:28:13,480 INFO L226 Difference]: Without dead ends: 177 [2020-07-17 17:28:13,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-07-17 17:28:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-07-17 17:28:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-17 17:28:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2020-07-17 17:28:13,501 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 45 [2020-07-17 17:28:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:13,501 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2020-07-17 17:28:13,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2020-07-17 17:28:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-17 17:28:13,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:13,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:13,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:28:13,504 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:13,504 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-07-17 17:28:13,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:13,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801738644] [2020-07-17 17:28:13,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,700 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 17:28:13,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801738644] [2020-07-17 17:28:13,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:13,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 17:28:13,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988894506] [2020-07-17 17:28:13,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 17:28:13,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:13,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 17:28:13,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:28:13,705 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 11 states. [2020-07-17 17:28:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:14,546 INFO L93 Difference]: Finished difference Result 374 states and 398 transitions. [2020-07-17 17:28:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 17:28:14,547 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-07-17 17:28:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:14,550 INFO L225 Difference]: With dead ends: 374 [2020-07-17 17:28:14,550 INFO L226 Difference]: Without dead ends: 306 [2020-07-17 17:28:14,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:28:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-17 17:28:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 196. [2020-07-17 17:28:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-07-17 17:28:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2020-07-17 17:28:14,577 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 49 [2020-07-17 17:28:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:14,577 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2020-07-17 17:28:14,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 17:28:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2020-07-17 17:28:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 17:28:14,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:14,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:14,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:28:14,580 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-07-17 17:28:14,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:14,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649469811] [2020-07-17 17:28:14,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:14,900 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 17:28:14,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649469811] [2020-07-17 17:28:14,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:14,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 17:28:14,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952048265] [2020-07-17 17:28:14,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 17:28:14,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 17:28:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:28:14,901 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand 14 states. [2020-07-17 17:28:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:16,825 INFO L93 Difference]: Finished difference Result 589 states and 622 transitions. [2020-07-17 17:28:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 17:28:16,826 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-07-17 17:28:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:16,829 INFO L225 Difference]: With dead ends: 589 [2020-07-17 17:28:16,829 INFO L226 Difference]: Without dead ends: 586 [2020-07-17 17:28:16,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 17:28:16,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-17 17:28:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 213. [2020-07-17 17:28:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-07-17 17:28:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-07-17 17:28:16,861 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 54 [2020-07-17 17:28:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:16,862 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-07-17 17:28:16,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 17:28:16,862 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-07-17 17:28:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 17:28:16,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:16,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:16,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:28:16,863 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:16,864 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-07-17 17:28:16,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:16,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621500856] [2020-07-17 17:28:16,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 17:28:16,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621500856] [2020-07-17 17:28:16,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:16,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:28:16,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579782578] [2020-07-17 17:28:16,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:28:16,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:16,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:28:16,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:16,980 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 8 states. [2020-07-17 17:28:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:17,460 INFO L93 Difference]: Finished difference Result 297 states and 316 transitions. [2020-07-17 17:28:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:28:17,460 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-07-17 17:28:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:17,462 INFO L225 Difference]: With dead ends: 297 [2020-07-17 17:28:17,462 INFO L226 Difference]: Without dead ends: 267 [2020-07-17 17:28:17,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:28:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-07-17 17:28:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 248. [2020-07-17 17:28:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-07-17 17:28:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-07-17 17:28:17,501 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 54 [2020-07-17 17:28:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:17,501 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-07-17 17:28:17,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:28:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-07-17 17:28:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 17:28:17,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:17,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:17,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:28:17,503 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:17,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-07-17 17:28:17,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:17,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836221245] [2020-07-17 17:28:17,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:17,543 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 17:28:17,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836221245] [2020-07-17 17:28:17,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:17,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:17,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866375231] [2020-07-17 17:28:17,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:17,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:17,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:17,545 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-07-17 17:28:17,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:17,769 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-07-17 17:28:17,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:17,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-07-17 17:28:17,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:17,772 INFO L225 Difference]: With dead ends: 254 [2020-07-17 17:28:17,772 INFO L226 Difference]: Without dead ends: 249 [2020-07-17 17:28:17,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-17 17:28:17,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-07-17 17:28:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-07-17 17:28:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-07-17 17:28:17,816 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 56 [2020-07-17 17:28:17,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:17,816 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-07-17 17:28:17,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:17,817 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-07-17 17:28:17,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-17 17:28:17,818 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:17,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:17,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 17:28:17,818 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:17,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-07-17 17:28:17,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:17,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287833725] [2020-07-17 17:28:17,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:17,889 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:28:17,889 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:28:17,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 17:28:17,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:28:17 BoogieIcfgContainer [2020-07-17 17:28:17,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:28:17,979 INFO L168 Benchmark]: Toolchain (without parser) took 10594.07 ms. Allocated memory was 140.0 MB in the beginning and 337.1 MB in the end (delta: 197.1 MB). Free memory was 104.0 MB in the beginning and 176.8 MB in the end (delta: -72.7 MB). Peak memory consumption was 124.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,982 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.42 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 172.1 MB in the end (delta: -68.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,983 INFO L168 Benchmark]: Boogie Preprocessor took 82.82 ms. Allocated memory is still 204.5 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,984 INFO L168 Benchmark]: RCFGBuilder took 756.09 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 105.4 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,986 INFO L168 Benchmark]: TraceAbstraction took 9100.34 ms. Allocated memory was 204.5 MB in the beginning and 337.1 MB in the end (delta: 132.6 MB). Free memory was 105.4 MB in the beginning and 176.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:17,990 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 140.0 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.42 ms. Allocated memory was 140.0 MB in the beginning and 204.5 MB in the end (delta: 64.5 MB). Free memory was 103.6 MB in the beginning and 172.1 MB in the end (delta: -68.5 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.82 ms. Allocated memory is still 204.5 MB. Free memory was 172.1 MB in the beginning and 168.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 756.09 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 105.4 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9100.34 ms. Allocated memory was 204.5 MB in the beginning and 337.1 MB in the end (delta: 132.6 MB). Free memory was 105.4 MB in the beginning and 176.8 MB in the end (delta: -71.4 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1011] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1019] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1021] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE !(((void*)0) != inner->next) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1955 SDtfs, 3671 SDslu, 5799 SDs, 0 SdLazy, 4090 SolverSat, 116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 929 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 152284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 1/1 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...