/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 --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 0.2.1-dev-36cd7be [2021-02-23 23:08:10,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:08:10,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:08:10,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:08:10,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:08:10,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:08:10,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:08:10,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:08:10,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:08:10,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:08:10,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:08:10,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:08:10,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:08:10,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:08:10,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:08:10,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:08:10,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:08:10,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:08:10,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:08:10,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:08:10,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:08:10,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:08:10,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:08:10,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:08:10,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:08:10,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:08:10,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:08:10,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:08:10,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:08:10,901 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:08:10,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:08:10,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:08:10,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:08:10,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:08:10,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:08:10,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:08:10,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:08:10,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:08:10,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:08:10,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:08:10,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:08:10,910 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:08:10,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:08:10,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:08:10,911 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:08:10,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:08:10,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:08:10,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:10,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:08:10,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:08:10,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:08:10,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:08:11,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:08:11,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:08:11,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:08:11,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:08:11,409 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:08:11,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-23 23:08:11,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeab3527/1a4fe9d4ac97457ebe16e6c0d907da7e/FLAG5b32084dc [2021-02-23 23:08:12,298 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:08:12,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-23 23:08:12,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeab3527/1a4fe9d4ac97457ebe16e6c0d907da7e/FLAG5b32084dc [2021-02-23 23:08:12,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeab3527/1a4fe9d4ac97457ebe16e6c0d907da7e [2021-02-23 23:08:12,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:08:12,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:08:12,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:12,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:08:12,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:08:12,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23885c25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12, skipping insertion in model container [2021-02-23 23:08:12,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:08:12,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:08:13,047 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] [2021-02-23 23:08:13,055 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] [2021-02-23 23:08:13,056 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] [2021-02-23 23:08:13,058 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] [2021-02-23 23:08:13,059 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] [2021-02-23 23:08:13,062 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] [2021-02-23 23:08:13,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:13,076 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:08:13,136 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] [2021-02-23 23:08:13,145 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] [2021-02-23 23:08:13,146 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] [2021-02-23 23:08:13,150 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] [2021-02-23 23:08:13,154 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] [2021-02-23 23:08:13,157 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] [2021-02-23 23:08:13,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:13,248 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:08:13,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13 WrapperNode [2021-02-23 23:08:13,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:13,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:08:13,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:08:13,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:08:13,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (1/1) ... [2021-02-23 23:08:13,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:08:13,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:08:13,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:08:13,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:08:13,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (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 [2021-02-23 23:08:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:08:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:08:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:08:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:08:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:08:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:08:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:08:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:08:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:08:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:08:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:08:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:08:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:08:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:08:13,462 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:08:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:08:13,464 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:08:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:08:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:08:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:08:13,468 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:08:13,469 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:08:13,470 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:08:13,471 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:08:13,472 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:08:13,473 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:08:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:08:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:08:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:08:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:08:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:08:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:08:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:08:14,476 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:14,476 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-23 23:08:14,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:14 BoogieIcfgContainer [2021-02-23 23:08:14,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:14,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:14,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:14,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:14,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:08:12" (1/3) ... [2021-02-23 23:08:14,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533a1290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:14, skipping insertion in model container [2021-02-23 23:08:14,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:13" (2/3) ... [2021-02-23 23:08:14,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@533a1290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:14, skipping insertion in model container [2021-02-23 23:08:14,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:14" (3/3) ... [2021-02-23 23:08:14,489 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2021-02-23 23:08:14,496 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:14,502 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-23 23:08:14,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-23 23:08:14,554 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:14,554 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:14,554 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:14,555 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:14,555 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:14,555 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:14,555 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:14,555 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2021-02-23 23:08:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 23:08:14,586 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:14,587 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] [2021-02-23 23:08:14,588 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:14,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1971644664, now seen corresponding path program 1 times [2021-02-23 23:08:14,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:14,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992140276] [2021-02-23 23:08:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:14,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992140276] [2021-02-23 23:08:14,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:14,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:08:14,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934901882] [2021-02-23 23:08:14,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:08:14,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:08:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:08:14,998 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 3 states. [2021-02-23 23:08:15,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:15,278 INFO L93 Difference]: Finished difference Result 199 states and 245 transitions. [2021-02-23 23:08:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:08:15,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2021-02-23 23:08:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:15,291 INFO L225 Difference]: With dead ends: 199 [2021-02-23 23:08:15,291 INFO L226 Difference]: Without dead ends: 94 [2021-02-23 23:08:15,296 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 [2021-02-23 23:08:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-02-23 23:08:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-02-23 23:08:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-02-23 23:08:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2021-02-23 23:08:15,348 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 30 [2021-02-23 23:08:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:15,349 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2021-02-23 23:08:15,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:08:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2021-02-23 23:08:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 23:08:15,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:15,351 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] [2021-02-23 23:08:15,351 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:15,351 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1651111878, now seen corresponding path program 1 times [2021-02-23 23:08:15,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:15,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777370788] [2021-02-23 23:08:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:15,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:15,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:15,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:15,514 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,515 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:15,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:08:15,541 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:08:15,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,564 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:15,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777370788] [2021-02-23 23:08:15,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:15,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 23:08:15,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520722022] [2021-02-23 23:08:15,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 23:08:15,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:15,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 23:08:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:08:15,645 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 12 states. [2021-02-23 23:08:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,372 INFO L93 Difference]: Finished difference Result 178 states and 183 transitions. [2021-02-23 23:08:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:08:16,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2021-02-23 23:08:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,375 INFO L225 Difference]: With dead ends: 178 [2021-02-23 23:08:16,375 INFO L226 Difference]: Without dead ends: 176 [2021-02-23 23:08:16,377 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 [2021-02-23 23:08:16,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-02-23 23:08:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 107. [2021-02-23 23:08:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-02-23 23:08:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2021-02-23 23:08:16,400 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 31 [2021-02-23 23:08:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,400 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2021-02-23 23:08:16,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 23:08:16,401 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2021-02-23 23:08:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 23:08:16,402 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,402 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] [2021-02-23 23:08:16,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:08:16,402 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1446677332, now seen corresponding path program 1 times [2021-02-23 23:08:16,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510598451] [2021-02-23 23:08:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,487 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:16,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:16,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,507 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:16,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,556 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510598451] [2021-02-23 23:08:16,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:16,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:16,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434483123] [2021-02-23 23:08:16,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:16,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:16,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:16,563 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 6 states. [2021-02-23 23:08:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,846 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2021-02-23 23:08:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:08:16,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2021-02-23 23:08:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,849 INFO L225 Difference]: With dead ends: 164 [2021-02-23 23:08:16,849 INFO L226 Difference]: Without dead ends: 162 [2021-02-23 23:08:16,850 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 [2021-02-23 23:08:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-02-23 23:08:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 105. [2021-02-23 23:08:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-02-23 23:08:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2021-02-23 23:08:16,872 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 32 [2021-02-23 23:08:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,872 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2021-02-23 23:08:16,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2021-02-23 23:08:16,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 23:08:16,874 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,874 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] [2021-02-23 23:08:16,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:08:16,875 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2072063760, now seen corresponding path program 1 times [2021-02-23 23:08:16,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770200166] [2021-02-23 23:08:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:16,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:16,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:16,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:17,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:17,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770200166] [2021-02-23 23:08:17,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:17,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:17,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199493803] [2021-02-23 23:08:17,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:17,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:17,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:17,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:17,046 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 6 states. [2021-02-23 23:08:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:17,279 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2021-02-23 23:08:17,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:08:17,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2021-02-23 23:08:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:17,281 INFO L225 Difference]: With dead ends: 105 [2021-02-23 23:08:17,281 INFO L226 Difference]: Without dead ends: 102 [2021-02-23 23:08:17,282 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 [2021-02-23 23:08:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-02-23 23:08:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-02-23 23:08:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-02-23 23:08:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 105 transitions. [2021-02-23 23:08:17,300 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 105 transitions. Word has length 39 [2021-02-23 23:08:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:17,300 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 105 transitions. [2021-02-23 23:08:17,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 105 transitions. [2021-02-23 23:08:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 23:08:17,302 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:17,302 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] [2021-02-23 23:08:17,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:08:17,303 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:17,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1984236912, now seen corresponding path program 1 times [2021-02-23 23:08:17,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:17,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219047781] [2021-02-23 23:08:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:17,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:17,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:17,469 WARN L141 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size [2021-02-23 23:08:17,470 WARN L147 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size 15 [2021-02-23 23:08:17,487 WARN L141 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size [2021-02-23 23:08:17,488 WARN L147 QuantifierPusher]: treesize reduction 21, result has 58.0 percent of original size 29 [2021-02-23 23:08:17,517 WARN L141 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size [2021-02-23 23:08:17,520 WARN L147 QuantifierPusher]: treesize reduction 21, result has 57.1 percent of original size 28 [2021-02-23 23:08:17,559 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-23 23:08:17,560 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-23 23:08:17,593 WARN L141 QuantifierPusher]: treesize reduction 21, result has 71.2 percent of original size [2021-02-23 23:08:17,594 WARN L147 QuantifierPusher]: treesize reduction 21, result has 71.2 percent of original size 52 [2021-02-23 23:08:17,635 WARN L141 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-02-23 23:08:17,637 WARN L147 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size 32 [2021-02-23 23:08:17,638 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size [2021-02-23 23:08:17,639 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.9 percent of original size 23 [2021-02-23 23:08:17,657 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-23 23:08:17,657 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-23 23:08:17,673 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-23 23:08:17,674 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-23 23:08:17,693 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-23 23:08:17,694 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-23 23:08:17,734 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-23 23:08:17,740 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-23 23:08:17,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:17,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:17,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:08:17,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219047781] [2021-02-23 23:08:17,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:17,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 23:08:17,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215471654] [2021-02-23 23:08:17,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 23:08:17,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:17,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 23:08:17,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:08:17,825 INFO L87 Difference]: Start difference. First operand 102 states and 105 transitions. Second operand 14 states. [2021-02-23 23:08:18,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:18,707 INFO L93 Difference]: Finished difference Result 233 states and 239 transitions. [2021-02-23 23:08:18,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:08:18,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2021-02-23 23:08:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:18,710 INFO L225 Difference]: With dead ends: 233 [2021-02-23 23:08:18,711 INFO L226 Difference]: Without dead ends: 190 [2021-02-23 23:08:18,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2021-02-23 23:08:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-02-23 23:08:18,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 117. [2021-02-23 23:08:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2021-02-23 23:08:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2021-02-23 23:08:18,742 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 39 [2021-02-23 23:08:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:18,743 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2021-02-23 23:08:18,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 23:08:18,743 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2021-02-23 23:08:18,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 23:08:18,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:18,745 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] [2021-02-23 23:08:18,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:08:18,745 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:18,746 INFO L82 PathProgramCache]: Analyzing trace with hash 138822313, now seen corresponding path program 1 times [2021-02-23 23:08:18,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:18,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370766435] [2021-02-23 23:08:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:18,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:18,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:18,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:18,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:18,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:08:18,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:18,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:08:18,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:18,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:18,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:08:18,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:08:18,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:18,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:08:18,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:18,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:08:19,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:19,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:19,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:19,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:19,040 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:19,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:19,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:19,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-23 23:08:19,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370766435] [2021-02-23 23:08:19,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:08:19,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-23 23:08:19,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349832252] [2021-02-23 23:08:19,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-23 23:08:19,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-23 23:08:19,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-02-23 23:08:19,093 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand 17 states. [2021-02-23 23:08:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:20,019 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2021-02-23 23:08:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-23 23:08:20,020 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2021-02-23 23:08:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:20,021 INFO L225 Difference]: With dead ends: 150 [2021-02-23 23:08:20,021 INFO L226 Difference]: Without dead ends: 148 [2021-02-23 23:08:20,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-02-23 23:08:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-23 23:08:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 104. [2021-02-23 23:08:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-23 23:08:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2021-02-23 23:08:20,046 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 45 [2021-02-23 23:08:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:20,047 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 107 transitions. [2021-02-23 23:08:20,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-23 23:08:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 107 transitions. [2021-02-23 23:08:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:08:20,049 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:20,049 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] [2021-02-23 23:08:20,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:08:20,049 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:20,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1578700039, now seen corresponding path program 1 times [2021-02-23 23:08:20,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:20,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314908906] [2021-02-23 23:08:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:20,075 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:20,098 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:20,137 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:08:20,137 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:08:20,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:08:20,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:08:20 BoogieIcfgContainer [2021-02-23 23:08:20,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:08:20,214 INFO L168 Benchmark]: Toolchain (without parser) took 7640.39 ms. Allocated memory was 156.2 MB in the beginning and 241.2 MB in the end (delta: 84.9 MB). Free memory was 131.7 MB in the beginning and 135.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 82.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:20,216 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:08:20,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.51 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 107.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:20,217 INFO L168 Benchmark]: Boogie Preprocessor took 88.59 ms. Allocated memory is still 156.2 MB. Free memory was 107.9 MB in the beginning and 139.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:20,223 INFO L168 Benchmark]: RCFGBuilder took 1138.77 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 89.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:20,223 INFO L168 Benchmark]: TraceAbstraction took 5731.11 ms. Allocated memory was 156.2 MB in the beginning and 241.2 MB in the end (delta: 84.9 MB). Free memory was 89.2 MB in the beginning and 135.0 MB in the end (delta: -45.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:20,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 156.2 MB. Free memory is still 128.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 658.51 ms. Allocated memory is still 156.2 MB. Free memory was 130.7 MB in the beginning and 107.9 MB in the end (delta: 22.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.59 ms. Allocated memory is still 156.2 MB. Free memory was 107.9 MB in the beginning and 139.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1138.77 ms. Allocated memory is still 156.2 MB. Free memory was 139.4 MB in the beginning and 89.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5731.11 ms. Allocated memory was 156.2 MB in the beginning and 241.2 MB in the end (delta: 84.9 MB). Free memory was 89.2 MB in the beginning and 135.0 MB in the end (delta: -45.8 MB). Peak memory consumption was 38.6 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)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1006] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1009] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1021] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1022] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1023] 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}] [L1024] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1024] 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}] [L1026] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1030] 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] [L1035] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1035] 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] [L1036] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->next={-2:0}] [L1036] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->next={-2:0}] [L1037] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=2] [L1037] 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] [L1037] reach_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 4 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.4s, 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, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 262 NumberOfCodeBlocks, 262 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 39345 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...