/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-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:08:10,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:08:10,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:08:10,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:08:10,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:08:10,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:08:10,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:08:10,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:08:10,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:08:10,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:08:10,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:08:10,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:08:10,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:08:10,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:08:10,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:08:10,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:08:10,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:08:10,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:08:10,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:08:10,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:08:10,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:08:10,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:08:10,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:08:10,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:08:10,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:08:10,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:08:10,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:08:10,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:08:10,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:08:10,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:08:10,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:08:10,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:08:10,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:08:10,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:08:10,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:08:10,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:08:10,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:08:10,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:08:10,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:08:10,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:08:10,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:08:10,582 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 23:08:10,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:08:10,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:08:10,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:08:10,610 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:08:10,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:08:10,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:08:10,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:08:10,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:08:10,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:08:10,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:08:10,612 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:08:10,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:08:10,612 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:08:10,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:08:10,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:08:10,613 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:08:10,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:08:10,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:08:10,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:10,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:08:10,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:08:10,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:08:10,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:08:11,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:08:11,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:08:11,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:08:11,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:08:11,037 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:08:11,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-23 23:08:11,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b8e2dd57/d742c8b82f724449b5227cf2197e98d6/FLAGa5dc9f272 [2021-02-23 23:08:11,873 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:08:11,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-23 23:08:11,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b8e2dd57/d742c8b82f724449b5227cf2197e98d6/FLAGa5dc9f272 [2021-02-23 23:08:12,144 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b8e2dd57/d742c8b82f724449b5227cf2197e98d6 [2021-02-23 23:08:12,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:08:12,162 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:08:12,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:12,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:08:12,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:08:12,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4539bbc7 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 23:08:12,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:08:12,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:08:12,735 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-sorted-1.i[22384,22397] [2021-02-23 23:08:12,746 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-sorted-1.i[22614,22627] [2021-02-23 23:08:12,754 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-sorted-1.i[22989,23002] [2021-02-23 23:08:12,755 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-sorted-1.i[23053,23066] [2021-02-23 23:08:12,758 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-sorted-1.i[23184,23197] [2021-02-23 23:08:12,759 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-sorted-1.i[23248,23261] [2021-02-23 23:08:12,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:12,783 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:08:12,844 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-sorted-1.i[22384,22397] [2021-02-23 23:08:12,847 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-sorted-1.i[22614,22627] [2021-02-23 23:08:12,851 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-sorted-1.i[22989,23002] [2021-02-23 23:08:12,852 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-sorted-1.i[23053,23066] [2021-02-23 23:08:12,854 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-sorted-1.i[23184,23197] [2021-02-23 23:08:12,855 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-sorted-1.i[23248,23261] [2021-02-23 23:08:12,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:12,915 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:08:12,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12 WrapperNode [2021-02-23 23:08:12,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:12,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:08:12,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:08:12,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:08:12,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:12,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:13,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (1/1) ... [2021-02-23 23:08:13,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:08:13,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:08:13,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:08:13,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:08:13,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (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 23:08:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:08:13,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:08:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:08:13,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:08:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:08:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:08:13,119 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:08:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:08:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:08:13,121 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:08:13,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:08:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:08:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:08:13,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:08:13,126 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:08:13,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:08:13,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:08:13,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:08:13,130 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:08:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:08:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:08:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:08:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:08:13,132 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:08:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:08:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:08:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:08:13,133 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:08:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:08:13,134 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:08:13,135 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 23:08:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:08:13,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:08:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 23:08:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:08:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:08:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:08:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:08:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:08:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:08:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:08:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:08:13,140 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:08:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:08:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:08:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:08:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:08:13,141 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:08:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:08:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:08:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:08:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:08:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:08:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:08:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:08:13,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:08:14,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:14,125 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-02-23 23:08:14,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:14 BoogieIcfgContainer [2021-02-23 23:08:14,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:14,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:14,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:14,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:14,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:08:12" (1/3) ... [2021-02-23 23:08:14,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44195370 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 23:08:14,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:12" (2/3) ... [2021-02-23 23:08:14,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44195370 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 23:08:14,135 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 23:08:14,137 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2021-02-23 23:08:14,143 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:14,147 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-23 23:08:14,163 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-23 23:08:14,188 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:14,188 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:14,188 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:14,188 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:14,189 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:14,189 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:14,189 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:14,189 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2021-02-23 23:08:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 23:08:14,219 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:14,220 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] [2021-02-23 23:08:14,221 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 23:08:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:14,227 INFO L82 PathProgramCache]: Analyzing trace with hash -578909769, now seen corresponding path program 1 times [2021-02-23 23:08:14,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:14,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955603035] [2021-02-23 23:08:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:14,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:14,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:14,504 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 23:08:14,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955603035] [2021-02-23 23:08:14,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:14,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:08:14,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608244950] [2021-02-23 23:08:14,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:08:14,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:14,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:08:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:08:14,532 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2021-02-23 23:08:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:14,890 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2021-02-23 23:08:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:08:14,892 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 23:08:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:14,905 INFO L225 Difference]: With dead ends: 287 [2021-02-23 23:08:14,906 INFO L226 Difference]: Without dead ends: 148 [2021-02-23 23:08:14,911 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 23:08:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-23 23:08:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-23 23:08:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-23 23:08:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2021-02-23 23:08:15,009 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 22 [2021-02-23 23:08:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:15,013 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2021-02-23 23:08:15,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:08:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2021-02-23 23:08:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 23:08:15,014 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:15,014 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] [2021-02-23 23:08:15,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:15,015 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 23:08:15,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash 949291738, now seen corresponding path program 1 times [2021-02-23 23:08:15,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:15,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079526120] [2021-02-23 23:08:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:15,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,183 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 23:08:15,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079526120] [2021-02-23 23:08:15,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:15,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:15,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949127782] [2021-02-23 23:08:15,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:15,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:15,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:15,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:15,194 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 4 states. [2021-02-23 23:08:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:15,543 INFO L93 Difference]: Finished difference Result 299 states and 322 transitions. [2021-02-23 23:08:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:15,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-23 23:08:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:15,556 INFO L225 Difference]: With dead ends: 299 [2021-02-23 23:08:15,556 INFO L226 Difference]: Without dead ends: 169 [2021-02-23 23:08:15,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-23 23:08:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-02-23 23:08:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 23:08:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-23 23:08:15,608 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 24 [2021-02-23 23:08:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:15,609 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-23 23:08:15,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-23 23:08:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 23:08:15,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:15,610 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:15,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:08:15,611 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 23:08:15,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1135487830, now seen corresponding path program 1 times [2021-02-23 23:08:15,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:15,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216994640] [2021-02-23 23:08:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:08:15,714 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:15,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:15,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:08:15,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216994640] [2021-02-23 23:08:15,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:15,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:15,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615379918] [2021-02-23 23:08:15,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:15,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:15,783 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 6 states. [2021-02-23 23:08:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,243 INFO L93 Difference]: Finished difference Result 266 states and 284 transitions. [2021-02-23 23:08:16,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:08:16,244 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 23:08:16,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,246 INFO L225 Difference]: With dead ends: 266 [2021-02-23 23:08:16,246 INFO L226 Difference]: Without dead ends: 264 [2021-02-23 23:08:16,247 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 23:08:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-23 23:08:16,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 162. [2021-02-23 23:08:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-23 23:08:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-23 23:08:16,276 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 42 [2021-02-23 23:08:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,277 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-23 23:08:16,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-23 23:08:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 23:08:16,279 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,280 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:16,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:08:16,280 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 23:08:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,281 INFO L82 PathProgramCache]: Analyzing trace with hash 632709025, now seen corresponding path program 1 times [2021-02-23 23:08:16,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391415686] [2021-02-23 23:08:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,338 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,340 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:08:16,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:08:16,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391415686] [2021-02-23 23:08:16,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:16,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:08:16,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654706546] [2021-02-23 23:08:16,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:08:16,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:16,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:08:16,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:16,380 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 4 states. [2021-02-23 23:08:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:16,638 INFO L93 Difference]: Finished difference Result 248 states and 265 transitions. [2021-02-23 23:08:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:08:16,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2021-02-23 23:08:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:16,640 INFO L225 Difference]: With dead ends: 248 [2021-02-23 23:08:16,640 INFO L226 Difference]: Without dead ends: 163 [2021-02-23 23:08:16,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:08:16,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-02-23 23:08:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-02-23 23:08:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-23 23:08:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2021-02-23 23:08:16,666 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 65 [2021-02-23 23:08:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:16,667 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2021-02-23 23:08:16,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:08:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2021-02-23 23:08:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-23 23:08:16,672 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:16,674 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:16,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:08:16,675 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 23:08:16,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:16,675 INFO L82 PathProgramCache]: Analyzing trace with hash 38611748, now seen corresponding path program 1 times [2021-02-23 23:08:16,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:16,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648656001] [2021-02-23 23:08:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:16,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:16,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:08:16,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:16,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:08:16,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:16,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:16,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-23 23:08:16,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648656001] [2021-02-23 23:08:16,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:16,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:08:16,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859323730] [2021-02-23 23:08:16,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:08:16,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:08:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:16,867 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 8 states. [2021-02-23 23:08:17,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:17,339 INFO L93 Difference]: Finished difference Result 275 states and 293 transitions. [2021-02-23 23:08:17,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:08:17,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2021-02-23 23:08:17,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:17,343 INFO L225 Difference]: With dead ends: 275 [2021-02-23 23:08:17,343 INFO L226 Difference]: Without dead ends: 189 [2021-02-23 23:08:17,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-02-23 23:08:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-02-23 23:08:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2021-02-23 23:08:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-23 23:08:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2021-02-23 23:08:17,385 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 67 [2021-02-23 23:08:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:17,390 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2021-02-23 23:08:17,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:08:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2021-02-23 23:08:17,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-23 23:08:17,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:17,401 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:17,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:08:17,402 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 23:08:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:17,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1740228018, now seen corresponding path program 1 times [2021-02-23 23:08:17,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:17,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119299568] [2021-02-23 23:08:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:17,486 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:08:17,527 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:08:17,572 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:08:17,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:08:17,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:08:17,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:08:17 BoogieIcfgContainer [2021-02-23 23:08:17,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:08:17,636 INFO L168 Benchmark]: Toolchain (without parser) took 5486.61 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 134.9 MB in the beginning and 104.9 MB in the end (delta: 29.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:17,637 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 160.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:08:17,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.7 MB in the beginning and 110.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:17,638 INFO L168 Benchmark]: Boogie Preprocessor took 92.87 ms. Allocated memory is still 160.4 MB. Free memory was 110.4 MB in the beginning and 143.1 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:17,639 INFO L168 Benchmark]: RCFGBuilder took 1116.84 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 143.1 MB in the beginning and 170.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:17,640 INFO L168 Benchmark]: TraceAbstraction took 3505.58 ms. Allocated memory is still 192.9 MB. Free memory was 169.5 MB in the beginning and 104.9 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:08:17,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 160.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 746.20 ms. Allocated memory is still 160.4 MB. Free memory was 133.7 MB in the beginning and 110.4 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.87 ms. Allocated memory is still 160.4 MB. Free memory was 110.4 MB in the beginning and 143.1 MB in the end (delta: -32.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1116.84 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 143.1 MB in the beginning and 170.0 MB in the end (delta: -26.9 MB). Peak memory consumption was 59.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3505.58 ms. Allocated memory is still 192.9 MB. Free memory was 169.5 MB in the beginning and 104.9 MB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L999] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1003] int marked = 0; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1009] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1010] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1010] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1011] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1011] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1012] x->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}] [L1014] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}] [L1016] marked = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1019] COND TRUE \read(marked) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1020] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1025] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1028] marked = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1030] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1030] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1030] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1, x->next->data=1] [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1035] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1037] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1037] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1038] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->data=1] [L1038] COND TRUE !(x->data != 1) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->data=1] [L1038] reach_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 171 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 749 SDtfs, 766 SDslu, 840 SDs, 0 SdLazy, 1015 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred 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: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 290 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 27972 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...