/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:41:48,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:48,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:48,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:48,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:48,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:48,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:48,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:48,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:48,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:48,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:48,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:48,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:48,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:48,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:48,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:48,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:48,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:48,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:48,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:48,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:48,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:48,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:48,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:48,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:48,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:48,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:48,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:48,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:48,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:48,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:48,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:48,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:48,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:48,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:48,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:48,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:48,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:48,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:48,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:48,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:48,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:41:48,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:48,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:48,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:48,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:48,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:48,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:48,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:48,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:48,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:48,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:48,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:48,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:48,302 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:48,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:48,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:48,302 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:48,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:48,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:48,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:48,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:48,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:48,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:48,304 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:48,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:48,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:48,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:48,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:48,694 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:48,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-21 20:41:48,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7a3d5a3/4818d1563bc44634bd55daca5e10e92b/FLAGda6824843 [2021-02-21 20:41:49,501 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:49,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-21 20:41:49,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7a3d5a3/4818d1563bc44634bd55daca5e10e92b/FLAGda6824843 [2021-02-21 20:41:49,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f7a3d5a3/4818d1563bc44634bd55daca5e10e92b [2021-02-21 20:41:49,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:49,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:49,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:49,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:49,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:49,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:49" (1/1) ... [2021-02-21 20:41:49,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c13e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:49, skipping insertion in model container [2021-02-21 20:41:49,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:49" (1/1) ... [2021-02-21 20:41:49,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:49,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:50,236 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22229,22242] [2021-02-21 20:41:50,252 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22398,22411] [2021-02-21 20:41:50,256 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22489,22502] [2021-02-21 20:41:50,258 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22571,22584] [2021-02-21 20:41:50,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22649,22662] [2021-02-21 20:41:50,262 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22795,22808] [2021-02-21 20:41:50,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:50,284 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:50,317 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22229,22242] [2021-02-21 20:41:50,320 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22398,22411] [2021-02-21 20:41:50,321 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22489,22502] [2021-02-21 20:41:50,322 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22571,22584] [2021-02-21 20:41:50,323 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22649,22662] [2021-02-21 20:41:50,325 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i[22795,22808] [2021-02-21 20:41:50,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:50,390 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:50,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50 WrapperNode [2021-02-21 20:41:50,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:50,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:50,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:50,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:50,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (1/1) ... [2021-02-21 20:41:50,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:50,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:50,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:50,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:50,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (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 [2021-02-21 20:41:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:50,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:50,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:50,590 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:50,594 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:50,600 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:50,601 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:50,602 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:50,603 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:50,604 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:50,605 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:50,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:50,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:51,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:51,227 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-21 20:41:51,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:51 BoogieIcfgContainer [2021-02-21 20:41:51,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:51,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:51,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:51,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:51,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:49" (1/3) ... [2021-02-21 20:41:51,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f310ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:51, skipping insertion in model container [2021-02-21 20:41:51,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:50" (2/3) ... [2021-02-21 20:41:51,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f310ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:51, skipping insertion in model container [2021-02-21 20:41:51,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:51" (3/3) ... [2021-02-21 20:41:51,239 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2021-02-21 20:41:51,246 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:51,251 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-21 20:41:51,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-21 20:41:51,306 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:51,307 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:51,307 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:51,308 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:51,308 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:51,308 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:51,308 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:51,309 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2021-02-21 20:41:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 20:41:51,344 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:51,345 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] [2021-02-21 20:41:51,346 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:51,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:51,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1971644664, now seen corresponding path program 1 times [2021-02-21 20:41:51,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:51,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286641981] [2021-02-21 20:41:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:51,462 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:51,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,637 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,639 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:51,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:51,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286641981] [2021-02-21 20:41:51,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:51,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:41:51,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115144223] [2021-02-21 20:41:51,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:41:51,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:41:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:41:51,731 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states. [2021-02-21 20:41:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:51,991 INFO L93 Difference]: Finished difference Result 199 states and 245 transitions. [2021-02-21 20:41:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:41:51,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-21 20:41:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:52,003 INFO L225 Difference]: With dead ends: 199 [2021-02-21 20:41:52,003 INFO L226 Difference]: Without dead ends: 94 [2021-02-21 20:41:52,007 INFO L677 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 [2021-02-21 20:41:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-21 20:41:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-02-21 20:41:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-21 20:41:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2021-02-21 20:41:52,055 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 30 [2021-02-21 20:41:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:52,055 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2021-02-21 20:41:52,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:41:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2021-02-21 20:41:52,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 20:41:52,057 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:52,057 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] [2021-02-21 20:41:52,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:52,058 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:52,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:52,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1651111878, now seen corresponding path program 1 times [2021-02-21 20:41:52,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:52,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391502375] [2021-02-21 20:41:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:52,065 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:52,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:52,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:52,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:52,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:52,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:52,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:52,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:41:52,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:52,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:52,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:52,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:52,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:52,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:52,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391502375] [2021-02-21 20:41:52,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:52,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:41:52,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257080568] [2021-02-21 20:41:52,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:41:52,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:41:52,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:41:52,352 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 12 states. [2021-02-21 20:41:52,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:52,997 INFO L93 Difference]: Finished difference Result 178 states and 183 transitions. [2021-02-21 20:41:52,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 20:41:52,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2021-02-21 20:41:52,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:53,000 INFO L225 Difference]: With dead ends: 178 [2021-02-21 20:41:53,000 INFO L226 Difference]: Without dead ends: 176 [2021-02-21 20:41:53,002 INFO L677 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 [2021-02-21 20:41:53,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-21 20:41:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 107. [2021-02-21 20:41:53,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-02-21 20:41:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2021-02-21 20:41:53,024 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 31 [2021-02-21 20:41:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:53,024 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2021-02-21 20:41:53,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:41:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2021-02-21 20:41:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 20:41:53,026 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:53,026 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] [2021-02-21 20:41:53,026 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:53,027 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1446677332, now seen corresponding path program 1 times [2021-02-21 20:41:53,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083859990] [2021-02-21 20:41:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,033 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:53,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:53,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:53,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:53,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083859990] [2021-02-21 20:41:53,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:53,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:53,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873978287] [2021-02-21 20:41:53,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:53,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:53,155 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 6 states. [2021-02-21 20:41:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:53,400 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2021-02-21 20:41:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:41:53,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-02-21 20:41:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:53,402 INFO L225 Difference]: With dead ends: 164 [2021-02-21 20:41:53,402 INFO L226 Difference]: Without dead ends: 162 [2021-02-21 20:41:53,403 INFO L677 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 [2021-02-21 20:41:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-21 20:41:53,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 105. [2021-02-21 20:41:53,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-21 20:41:53,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2021-02-21 20:41:53,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 32 [2021-02-21 20:41:53,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:53,424 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2021-02-21 20:41:53,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2021-02-21 20:41:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:41:53,426 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:53,426 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] [2021-02-21 20:41:53,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:53,427 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:53,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2072063760, now seen corresponding path program 1 times [2021-02-21 20:41:53,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069251476] [2021-02-21 20:41:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,433 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:53,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,479 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:53,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:53,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:53,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069251476] [2021-02-21 20:41:53,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:53,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:53,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732188683] [2021-02-21 20:41:53,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:53,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:53,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:53,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:53,524 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 6 states. [2021-02-21 20:41:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:53,726 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2021-02-21 20:41:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:41:53,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-21 20:41:53,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:53,728 INFO L225 Difference]: With dead ends: 105 [2021-02-21 20:41:53,728 INFO L226 Difference]: Without dead ends: 102 [2021-02-21 20:41:53,729 INFO L677 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 [2021-02-21 20:41:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-21 20:41:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-21 20:41:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-21 20:41:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-02-21 20:41:53,747 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 39 [2021-02-21 20:41:53,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:53,747 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-02-21 20:41:53,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-02-21 20:41:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:41:53,749 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:53,749 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] [2021-02-21 20:41:53,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:53,749 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1984236912, now seen corresponding path program 1 times [2021-02-21 20:41:53,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:53,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028999177] [2021-02-21 20:41:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:53,755 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:53,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:53,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:53,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:53,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:53,922 WARN L141 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size [2021-02-21 20:41:53,923 WARN L147 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size 15 [2021-02-21 20:41:53,943 WARN L141 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-02-21 20:41:53,945 WARN L147 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size 29 [2021-02-21 20:41:53,974 WARN L141 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-02-21 20:41:53,980 WARN L147 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size 28 [2021-02-21 20:41:54,012 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-21 20:41:54,016 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-21 20:41:54,056 WARN L141 QuantifierPusher]: treesize reduction 21, result has 71.2 percent of original size [2021-02-21 20:41:54,060 WARN L147 QuantifierPusher]: treesize reduction 21, result has 71.2 percent of original size 52 [2021-02-21 20:41:54,107 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-21 20:41:54,119 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-21 20:41:54,121 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-21 20:41:54,122 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-21 20:41:54,139 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-21 20:41:54,140 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-21 20:41:54,171 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-21 20:41:54,172 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-21 20:41:54,187 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 20:41:54,188 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 20:41:54,205 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-21 20:41:54,206 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-21 20:41:54,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:54,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:54,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:54,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028999177] [2021-02-21 20:41:54,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:54,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:41:54,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642679676] [2021-02-21 20:41:54,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:41:54,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:41:54,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-02-21 20:41:54,258 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 14 states. [2021-02-21 20:41:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:55,062 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2021-02-21 20:41:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 20:41:55,062 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2021-02-21 20:41:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:55,064 INFO L225 Difference]: With dead ends: 233 [2021-02-21 20:41:55,064 INFO L226 Difference]: Without dead ends: 190 [2021-02-21 20:41:55,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-02-21 20:41:55,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-21 20:41:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 117. [2021-02-21 20:41:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-21 20:41:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2021-02-21 20:41:55,094 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 39 [2021-02-21 20:41:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:55,094 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2021-02-21 20:41:55,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:41:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2021-02-21 20:41:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-21 20:41:55,096 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:55,097 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, 1, 1, 1, 1] [2021-02-21 20:41:55,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:41:55,097 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash 138822313, now seen corresponding path program 1 times [2021-02-21 20:41:55,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:55,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996599689] [2021-02-21 20:41:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:55,156 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:55,159 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,220 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,220 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:55,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:55,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:55,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:41:55,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:41:55,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:41:55,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:55,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:55,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:41:55,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:41:55,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:55,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:41:55,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:41:55,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:55,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:55,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:55,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:55,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:55,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996599689] [2021-02-21 20:41:55,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:55,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:41:55,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262456513] [2021-02-21 20:41:55,475 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:41:55,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:55,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:41:55,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-21 20:41:55,476 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 17 states. [2021-02-21 20:41:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:56,327 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2021-02-21 20:41:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-21 20:41:56,327 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2021-02-21 20:41:56,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:56,329 INFO L225 Difference]: With dead ends: 150 [2021-02-21 20:41:56,329 INFO L226 Difference]: Without dead ends: 148 [2021-02-21 20:41:56,330 INFO L677 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 [2021-02-21 20:41:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-21 20:41:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2021-02-21 20:41:56,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-21 20:41:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-02-21 20:41:56,363 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 45 [2021-02-21 20:41:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:56,364 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-02-21 20:41:56,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:41:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-02-21 20:41:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:41:56,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:56,375 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] [2021-02-21 20:41:56,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:41:56,377 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1578700039, now seen corresponding path program 1 times [2021-02-21 20:41:56,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:56,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241732019] [2021-02-21 20:41:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:56,386 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:56,417 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:56,451 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:56,501 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:41:56,501 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:41:56,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:41:56,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:41:56 BoogieIcfgContainer [2021-02-21 20:41:56,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:41:56,528 INFO L168 Benchmark]: Toolchain (without parser) took 6786.25 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 127.8 MB in the beginning and 91.5 MB in the end (delta: 36.3 MB). Peak memory consumption was 106.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:56,531 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:41:56,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 104.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:56,538 INFO L168 Benchmark]: Boogie Preprocessor took 63.27 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 101.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:56,539 INFO L168 Benchmark]: RCFGBuilder took 773.84 ms. Allocated memory is still 153.1 MB. Free memory was 101.2 MB in the beginning and 87.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:56,539 INFO L168 Benchmark]: TraceAbstraction took 5292.13 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 86.4 MB in the beginning and 91.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:56,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 633.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 104.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.27 ms. Allocated memory is still 153.1 MB. Free memory was 104.1 MB in the beginning and 101.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 773.84 ms. Allocated memory is still 153.1 MB. Free memory was 101.2 MB in the beginning and 87.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5292.13 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 86.4 MB in the beginning and 91.5 MB in the end (delta: -5.0 MB). Peak memory consumption was 63.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 449 SDtfs, 1333 SDslu, 1879 SDs, 0 SdLazy, 2023 SolverSat, 131 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred 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: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...