/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-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:33,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:33,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:33,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:33,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:33,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:33,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:33,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:33,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:33,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:33,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:33,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:33,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:33,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:33,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:33,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:33,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:33,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:33,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:33,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:33,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:33,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:33,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:33,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:33,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:33,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:33,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:33,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:33,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:33,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:33,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:33,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:33,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:33,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:33,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:33,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:33,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:33,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:33,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:33,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:33,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:33,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:20:33,152 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:33,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:33,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:33,154 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:33,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:33,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:33,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:33,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:33,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:33,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:33,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:33,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:33,156 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:33,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:33,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:33,156 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:33,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:33,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:33,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:33,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:33,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:33,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:33,158 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 [2020-08-22 22:20:33,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:33,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:33,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:33,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:33,448 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:33,449 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-22 22:20:33,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1da8c1/6401f69493a4466e87515d4795cde0fe/FLAG2ae9ea55e [2020-08-22 22:20:34,062 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:34,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2020-08-22 22:20:34,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1da8c1/6401f69493a4466e87515d4795cde0fe/FLAG2ae9ea55e [2020-08-22 22:20:34,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1da8c1/6401f69493a4466e87515d4795cde0fe [2020-08-22 22:20:34,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:34,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:34,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:34,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:34,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:34,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:34" (1/1) ... [2020-08-22 22:20:34,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2ce9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:34, skipping insertion in model container [2020-08-22 22:20:34,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:34" (1/1) ... [2020-08-22 22:20:34,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:34,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:34,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:34,871 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:34,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:35,002 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:35,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35 WrapperNode [2020-08-22 22:20:35,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:35,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:35,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:35,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:35,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:35,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:35,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:35,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:35,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:35,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:35,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:35,145 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:35,147 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:35,148 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:35,149 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:20:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:20:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:35,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:35,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:35,720 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-08-22 22:20:35,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:35 BoogieIcfgContainer [2020-08-22 22:20:35,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:35,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:35,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:35,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:35,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:34" (1/3) ... [2020-08-22 22:20:35,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f60526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:35, skipping insertion in model container [2020-08-22 22:20:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (2/3) ... [2020-08-22 22:20:35,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f60526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:35, skipping insertion in model container [2020-08-22 22:20:35,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:35" (3/3) ... [2020-08-22 22:20:35,733 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2020-08-22 22:20:35,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:35,751 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-08-22 22:20:35,761 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-08-22 22:20:35,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:35,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:35,780 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:35,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:35,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:35,780 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:35,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:35,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-08-22 22:20:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 22:20:35,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:35,810 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] [2020-08-22 22:20:35,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash 536950687, now seen corresponding path program 1 times [2020-08-22 22:20:35,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:35,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719621547] [2020-08-22 22:20:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:36,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719621547] [2020-08-22 22:20:36,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:36,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:20:36,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077853768] [2020-08-22 22:20:36,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:20:36,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:36,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:20:36,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:36,079 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2020-08-22 22:20:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:36,312 INFO L93 Difference]: Finished difference Result 189 states and 235 transitions. [2020-08-22 22:20:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:20:36,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 22:20:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:36,325 INFO L225 Difference]: With dead ends: 189 [2020-08-22 22:20:36,325 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 22:20:36,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 22:20:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-08-22 22:20:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-08-22 22:20:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-08-22 22:20:36,375 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 26 [2020-08-22 22:20:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:36,376 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-08-22 22:20:36,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:20:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-08-22 22:20:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 22:20:36,377 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:36,377 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] [2020-08-22 22:20:36,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:36,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:36,379 INFO L82 PathProgramCache]: Analyzing trace with hash -692885691, now seen corresponding path program 1 times [2020-08-22 22:20:36,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:36,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545257174] [2020-08-22 22:20:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:36,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545257174] [2020-08-22 22:20:36,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:36,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 22:20:36,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822873911] [2020-08-22 22:20:36,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:20:36,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:36,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:20:36,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:20:36,659 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-08-22 22:20:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:37,385 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2020-08-22 22:20:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:20:37,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-08-22 22:20:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:37,388 INFO L225 Difference]: With dead ends: 174 [2020-08-22 22:20:37,388 INFO L226 Difference]: Without dead ends: 172 [2020-08-22 22:20:37,389 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 [2020-08-22 22:20:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-22 22:20:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 103. [2020-08-22 22:20:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-22 22:20:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-08-22 22:20:37,411 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 27 [2020-08-22 22:20:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:37,412 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-08-22 22:20:37,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:20:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-08-22 22:20:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 22:20:37,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:37,413 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] [2020-08-22 22:20:37,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:37,414 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:37,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:37,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2098857180, now seen corresponding path program 1 times [2020-08-22 22:20:37,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:37,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445746872] [2020-08-22 22:20:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:37,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445746872] [2020-08-22 22:20:37,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:37,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:37,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046847292] [2020-08-22 22:20:37,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:37,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:37,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:37,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:37,526 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 6 states. [2020-08-22 22:20:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:37,744 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2020-08-22 22:20:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 22:20:37,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 22:20:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:37,746 INFO L225 Difference]: With dead ends: 160 [2020-08-22 22:20:37,747 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 22:20:37,747 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 [2020-08-22 22:20:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 22:20:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 101. [2020-08-22 22:20:37,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-22 22:20:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2020-08-22 22:20:37,768 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 28 [2020-08-22 22:20:37,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:37,769 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2020-08-22 22:20:37,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:37,769 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2020-08-22 22:20:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 22:20:37,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:37,770 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] [2020-08-22 22:20:37,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:37,771 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash 578708441, now seen corresponding path program 1 times [2020-08-22 22:20:37,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:37,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109104455] [2020-08-22 22:20:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:37,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109104455] [2020-08-22 22:20:37,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:37,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:37,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142419118] [2020-08-22 22:20:37,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:37,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:37,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:37,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:37,861 INFO L87 Difference]: Start difference. First operand 101 states and 104 transitions. Second operand 6 states. [2020-08-22 22:20:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,064 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-08-22 22:20:38,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:20:38,065 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-08-22 22:20:38,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,066 INFO L225 Difference]: With dead ends: 101 [2020-08-22 22:20:38,067 INFO L226 Difference]: Without dead ends: 98 [2020-08-22 22:20:38,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-22 22:20:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-08-22 22:20:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 22:20:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-08-22 22:20:38,098 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 35 [2020-08-22 22:20:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,098 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-08-22 22:20:38,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-08-22 22:20:38,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 22:20:38,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,104 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] [2020-08-22 22:20:38,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:38,105 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,105 INFO L82 PathProgramCache]: Analyzing trace with hash 666566073, now seen corresponding path program 1 times [2020-08-22 22:20:38,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1153948292] [2020-08-22 22:20:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1153948292] [2020-08-22 22:20:38,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 22:20:38,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632333591] [2020-08-22 22:20:38,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:20:38,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:20:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:38,546 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-08-22 22:20:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:39,304 INFO L93 Difference]: Finished difference Result 229 states and 235 transitions. [2020-08-22 22:20:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 22:20:39,305 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-08-22 22:20:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:39,306 INFO L225 Difference]: With dead ends: 229 [2020-08-22 22:20:39,307 INFO L226 Difference]: Without dead ends: 186 [2020-08-22 22:20:39,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2020-08-22 22:20:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-22 22:20:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 113. [2020-08-22 22:20:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 22:20:39,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-08-22 22:20:39,331 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 35 [2020-08-22 22:20:39,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:39,332 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-08-22 22:20:39,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:20:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-08-22 22:20:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 22:20:39,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:39,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:20:39,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,334 INFO L82 PathProgramCache]: Analyzing trace with hash 323200756, now seen corresponding path program 1 times [2020-08-22 22:20:39,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743217413] [2020-08-22 22:20:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 22:20:39,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743217413] [2020-08-22 22:20:39,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:20:39,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 22:20:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279651643] [2020-08-22 22:20:39,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 22:20:39,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 22:20:39,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:20:39,583 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 17 states. [2020-08-22 22:20:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:40,450 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2020-08-22 22:20:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 22:20:40,451 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-08-22 22:20:40,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:40,452 INFO L225 Difference]: With dead ends: 146 [2020-08-22 22:20:40,452 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 22:20:40,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:20:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 22:20:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 100. [2020-08-22 22:20:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 22:20:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-08-22 22:20:40,475 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 41 [2020-08-22 22:20:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:40,475 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-08-22 22:20:40,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 22:20:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-08-22 22:20:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 22:20:40,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:40,480 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] [2020-08-22 22:20:40,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:20:40,480 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash 957359950, now seen corresponding path program 1 times [2020-08-22 22:20:40,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:40,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744843469] [2020-08-22 22:20:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:40,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:40,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:40,561 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:20:40,561 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:20:40,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:20:40,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:20:40 BoogieIcfgContainer [2020-08-22 22:20:40,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:20:40,605 INFO L168 Benchmark]: Toolchain (without parser) took 6234.39 ms. Allocated memory was 139.5 MB in the beginning and 287.3 MB in the end (delta: 147.8 MB). Free memory was 100.7 MB in the beginning and 202.0 MB in the end (delta: -101.3 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,606 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.18 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 169.1 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,608 INFO L168 Benchmark]: Boogie Preprocessor took 66.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 166.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,609 INFO L168 Benchmark]: RCFGBuilder took 654.83 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 115.2 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,610 INFO L168 Benchmark]: TraceAbstraction took 4876.81 ms. Allocated memory was 202.9 MB in the beginning and 287.3 MB in the end (delta: 84.4 MB). Free memory was 114.6 MB in the beginning and 202.0 MB in the end (delta: -87.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 22:20:40,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.18 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.5 MB in the beginning and 169.1 MB in the end (delta: -68.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.1 MB in the beginning and 166.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 654.83 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 115.2 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4876.81 ms. Allocated memory was 202.9 MB in the beginning and 287.3 MB in the end (delta: 84.4 MB). Free memory was 114.6 MB in the beginning and 202.0 MB in the end (delta: -87.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L993] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L996] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1001] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1011] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1012] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1012] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1013] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1013] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1015] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1019] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1019] COND FALSE !(1 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1024] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1024] COND FALSE !(!(1 == x->data)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1025] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1025] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->next={-2:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=2] [L1026] COND TRUE !(2 != x->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=2] [L1026] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 101 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 425 SDtfs, 1341 SDslu, 1784 SDs, 0 SdLazy, 1954 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 243 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 30823 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 4/13 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...