/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:33,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:33,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:33,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:33,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:33,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:33,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:33,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:33,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:33,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:33,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:33,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:33,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:33,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:33,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:33,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:33,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:33,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:33,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:33,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:33,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:33,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:33,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:33,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:33,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:33,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:33,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:33,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:33,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:33,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:33,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:33,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:33,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:33,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:33,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:33,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:33,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:33,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:33,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:33,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:33,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:33,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:20:33,696 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:33,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:33,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:33,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:33,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:33,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:33,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:33,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:33,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:33,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:33,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:33,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:33,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:33,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:33,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:33,703 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:33,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:33,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:33,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:33,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:33,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:33,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:33,704 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:20:34,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:34,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:34,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:34,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:34,087 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:34,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-08-22 22:20:34,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5adb1af/cfa2285507334edebba707e4c7616ceb/FLAGedab3ead9 [2020-08-22 22:20:34,756 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:34,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-08-22 22:20:34,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5adb1af/cfa2285507334edebba707e4c7616ceb/FLAGedab3ead9 [2020-08-22 22:20:35,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5adb1af/cfa2285507334edebba707e4c7616ceb [2020-08-22 22:20:35,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:35,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:35,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:35,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:35,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:35,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf2c08b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35, skipping insertion in model container [2020-08-22 22:20:35,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:35,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:35,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:35,651 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:35,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:35,779 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:35,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35 WrapperNode [2020-08-22 22:20:35,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:35,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:35,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:35,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... [2020-08-22 22:20:35,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:35,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:35,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:35,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:35,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:35,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:35,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:35,915 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:35,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:35,919 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:35,920 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:35,921 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:35,922 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:35,923 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:35,925 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:35,926 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:35,927 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:35,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:35,929 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:35,930 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:35,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:35,932 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:35,933 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:35,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:35,935 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:35,936 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:35,943 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:35,944 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:20:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:20:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:36,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:36,579 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-08-22 22:20:36,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:36 BoogieIcfgContainer [2020-08-22 22:20:36,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:36,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:36,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:36,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:36,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:35" (1/3) ... [2020-08-22 22:20:36,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e7212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:36, skipping insertion in model container [2020-08-22 22:20:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:35" (2/3) ... [2020-08-22 22:20:36,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e7212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:36, skipping insertion in model container [2020-08-22 22:20:36,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:36" (3/3) ... [2020-08-22 22:20:36,593 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-08-22 22:20:36,603 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:36,611 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-22 22:20:36,626 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-22 22:20:36,650 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:36,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:36,651 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:36,651 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:36,651 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:36,651 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:36,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:36,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-08-22 22:20:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 22:20:36,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:36,682 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] [2020-08-22 22:20:36,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-08-22 22:20:36,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:36,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353639842] [2020-08-22 22:20:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:36,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353639842] [2020-08-22 22:20:36,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:36,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:20:36,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399924425] [2020-08-22 22:20:36,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:20:36,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:20:36,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:36,938 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 3 states. [2020-08-22 22:20:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:37,226 INFO L93 Difference]: Finished difference Result 173 states and 209 transitions. [2020-08-22 22:20:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:20:37,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-22 22:20:37,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:37,248 INFO L225 Difference]: With dead ends: 173 [2020-08-22 22:20:37,248 INFO L226 Difference]: Without dead ends: 74 [2020-08-22 22:20:37,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:20:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-22 22:20:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-08-22 22:20:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-22 22:20:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-08-22 22:20:37,336 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 20 [2020-08-22 22:20:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:37,337 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-08-22 22:20:37,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:20:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-08-22 22:20:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 22:20:37,341 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:37,341 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] [2020-08-22 22:20:37,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:37,342 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1430822134, now seen corresponding path program 1 times [2020-08-22 22:20:37,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:37,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788242834] [2020-08-22 22:20:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:37,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788242834] [2020-08-22 22:20:37,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:37,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 22:20:37,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025138666] [2020-08-22 22:20:37,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 22:20:37,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:37,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 22:20:37,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 22:20:37,640 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 10 states. [2020-08-22 22:20:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,148 INFO L93 Difference]: Finished difference Result 149 states and 157 transitions. [2020-08-22 22:20:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:20:38,148 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-08-22 22:20:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,151 INFO L225 Difference]: With dead ends: 149 [2020-08-22 22:20:38,151 INFO L226 Difference]: Without dead ends: 147 [2020-08-22 22:20:38,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-08-22 22:20:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-22 22:20:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-08-22 22:20:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 22:20:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-08-22 22:20:38,176 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 22 [2020-08-22 22:20:38,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,177 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-08-22 22:20:38,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 22:20:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-08-22 22:20:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 22:20:38,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:38,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:38,179 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-08-22 22:20:38,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636795730] [2020-08-22 22:20:38,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636795730] [2020-08-22 22:20:38,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:20:38,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964720402] [2020-08-22 22:20:38,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:20:38,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:20:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:20:38,322 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-08-22 22:20:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,681 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-08-22 22:20:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 22:20:38,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-22 22:20:38,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,683 INFO L225 Difference]: With dead ends: 118 [2020-08-22 22:20:38,683 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 22:20:38,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:20:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 22:20:38,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-08-22 22:20:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 22:20:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-08-22 22:20:38,702 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-08-22 22:20:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,706 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-08-22 22:20:38,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:20:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-08-22 22:20:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 22:20:38,708 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:38,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:38,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:38,709 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:38,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-08-22 22:20:38,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:38,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44808146] [2020-08-22 22:20:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:38,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44808146] [2020-08-22 22:20:38,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:38,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:38,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250537711] [2020-08-22 22:20:38,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:38,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:38,828 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 4 states. [2020-08-22 22:20:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:38,970 INFO L93 Difference]: Finished difference Result 195 states and 210 transitions. [2020-08-22 22:20:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:38,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-08-22 22:20:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:38,975 INFO L225 Difference]: With dead ends: 195 [2020-08-22 22:20:38,975 INFO L226 Difference]: Without dead ends: 136 [2020-08-22 22:20:38,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:38,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-22 22:20:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 97. [2020-08-22 22:20:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-22 22:20:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2020-08-22 22:20:38,998 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 33 [2020-08-22 22:20:38,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:38,999 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2020-08-22 22:20:38,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:38,999 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2020-08-22 22:20:39,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 22:20:39,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:39,000 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] [2020-08-22 22:20:39,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:39,003 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:39,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:39,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-08-22 22:20:39,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:39,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117079309] [2020-08-22 22:20:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:39,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117079309] [2020-08-22 22:20:39,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:39,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 22:20:39,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380058364] [2020-08-22 22:20:39,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:20:39,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:39,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:20:39,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:39,421 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand 14 states. [2020-08-22 22:20:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:40,259 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2020-08-22 22:20:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 22:20:40,260 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-08-22 22:20:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:40,261 INFO L225 Difference]: With dead ends: 190 [2020-08-22 22:20:40,261 INFO L226 Difference]: Without dead ends: 160 [2020-08-22 22:20:40,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2020-08-22 22:20:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-22 22:20:40,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 105. [2020-08-22 22:20:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 22:20:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-08-22 22:20:40,285 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 37 [2020-08-22 22:20:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:40,286 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-08-22 22:20:40,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:20:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-08-22 22:20:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 22:20:40,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:40,288 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] [2020-08-22 22:20:40,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:20:40,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:40,289 INFO L82 PathProgramCache]: Analyzing trace with hash 821991267, now seen corresponding path program 1 times [2020-08-22 22:20:40,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:40,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881669410] [2020-08-22 22:20:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:40,325 ERROR L253 erpolLogProxyWrapper]: Interpolant 13 not inductive [2020-08-22 22:20:40,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:20:40,335 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 22:20:40,341 INFO L168 Benchmark]: Toolchain (without parser) took 5311.68 ms. Allocated memory was 145.2 MB in the beginning and 249.0 MB in the end (delta: 103.8 MB). Free memory was 101.4 MB in the beginning and 104.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,342 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.83 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 170.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,343 INFO L168 Benchmark]: Boogie Preprocessor took 63.55 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 167.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,344 INFO L168 Benchmark]: RCFGBuilder took 739.75 ms. Allocated memory is still 202.9 MB. Free memory was 167.3 MB in the beginning and 118.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,345 INFO L168 Benchmark]: TraceAbstraction took 3752.50 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 117.9 MB in the beginning and 104.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:40,349 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 746.83 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 101.0 MB in the beginning and 170.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.55 ms. Allocated memory is still 202.9 MB. Free memory was 170.1 MB in the beginning and 167.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 739.75 ms. Allocated memory is still 202.9 MB. Free memory was 167.3 MB in the beginning and 118.6 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3752.50 ms. Allocated memory was 202.9 MB in the beginning and 249.0 MB in the end (delta: 46.1 MB). Free memory was 117.9 MB in the beginning and 104.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...