/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/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:03:13,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:03:13,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:03:13,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:03:13,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:03:13,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:03:13,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:03:13,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:03:13,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:03:13,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:03:13,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:03:13,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:03:13,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:03:13,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:03:13,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:03:13,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:03:13,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:03:13,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:03:13,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:03:13,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:03:13,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:03:13,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:03:13,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:03:13,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:03:13,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:03:13,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:03:13,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:03:13,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:03:13,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:03:13,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:03:13,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:03:13,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:03:13,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:03:13,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:03:13,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:03:13,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:03:13,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:03:13,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:03:13,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:03:13,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:03:13,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:03:13,664 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 23:03:13,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:03:13,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:03:13,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:03:13,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:03:13,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:03:13,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:03:13,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:03:13,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:03:13,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:03:13,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:03:13,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:03:13,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:03:13,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:03:13,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:03:13,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:03:13,681 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:03:13,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:03:13,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:03:13,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:03:13,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:03:13,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:03:13,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:03:13,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:03:14,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:03:14,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:03:14,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:03:14,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:03:14,156 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:03:14,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2021-02-23 23:03:14,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e2646e2/f6aabe90139c448aaa764e87f72767c9/FLAGef2f2b256 [2021-02-23 23:03:15,049 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:03:15,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2021-02-23 23:03:15,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e2646e2/f6aabe90139c448aaa764e87f72767c9/FLAGef2f2b256 [2021-02-23 23:03:15,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08e2646e2/f6aabe90139c448aaa764e87f72767c9 [2021-02-23 23:03:15,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:03:15,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:03:15,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:03:15,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:03:15,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:03:15,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:15,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d7ee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15, skipping insertion in model container [2021-02-23 23:03:15,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:15,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:03:15,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:03:15,756 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i[22632,22645] [2021-02-23 23:03:15,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:03:15,811 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:03:15,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i[22632,22645] [2021-02-23 23:03:15,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:03:15,955 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:03:15,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15 WrapperNode [2021-02-23 23:03:15,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:03:15,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:03:15,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:03:15,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:03:15,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:15,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:15,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:15,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:16,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:16,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:16,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (1/1) ... [2021-02-23 23:03:16,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:03:16,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:03:16,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:03:16,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:03:16,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (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 23:03:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:03:16,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:03:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:03:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:03:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:03:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-02-23 23:03:16,260 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2021-02-23 23:03:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2021-02-23 23:03:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2021-02-23 23:03:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2021-02-23 23:03:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2021-02-23 23:03:16,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:03:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:03:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:03:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:03:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:03:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:03:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:03:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:03:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:03:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:03:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:03:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:03:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:03:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:03:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:03:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:03:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:03:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:03:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:03:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:03:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:03:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:03:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:03:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:03:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:03:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:03:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:03:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:03:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:03:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:03:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:03:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:03:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-02-23 23:03:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2021-02-23 23:03:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2021-02-23 23:03:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:03:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:03:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:03:17,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:03:17,350 INFO L299 CfgBuilder]: Removed 33 assume(true) statements. [2021-02-23 23:03:17,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:03:17 BoogieIcfgContainer [2021-02-23 23:03:17,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:03:17,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:03:17,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:03:17,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:03:17,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:03:15" (1/3) ... [2021-02-23 23:03:17,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315a5ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:03:17, skipping insertion in model container [2021-02-23 23:03:17,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:03:15" (2/3) ... [2021-02-23 23:03:17,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315a5ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:03:17, skipping insertion in model container [2021-02-23 23:03:17,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:03:17" (3/3) ... [2021-02-23 23:03:17,393 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-02-23 23:03:17,406 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:03:17,417 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:03:17,450 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:03:17,501 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:03:17,502 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:03:17,502 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:03:17,503 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:03:17,503 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:03:17,503 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:03:17,503 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:03:17,503 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:03:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states. [2021-02-23 23:03:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-23 23:03:17,560 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:17,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:03:17,562 INFO L428 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:17,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:17,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1262471750, now seen corresponding path program 1 times [2021-02-23 23:03:17,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:17,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610090090] [2021-02-23 23:03:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:17,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:17,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:17,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:17,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:17,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:18,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:18,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:18,046 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 23:03:18,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610090090] [2021-02-23 23:03:18,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:18,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:03:18,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372127336] [2021-02-23 23:03:18,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:03:18,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:03:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:03:18,076 INFO L87 Difference]: Start difference. First operand 253 states. Second operand 3 states. [2021-02-23 23:03:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:18,659 INFO L93 Difference]: Finished difference Result 526 states and 694 transitions. [2021-02-23 23:03:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:03:18,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-02-23 23:03:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:18,677 INFO L225 Difference]: With dead ends: 526 [2021-02-23 23:03:18,677 INFO L226 Difference]: Without dead ends: 256 [2021-02-23 23:03:18,687 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 23:03:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-02-23 23:03:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 228. [2021-02-23 23:03:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2021-02-23 23:03:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 251 transitions. [2021-02-23 23:03:18,796 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 251 transitions. Word has length 19 [2021-02-23 23:03:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:18,797 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 251 transitions. [2021-02-23 23:03:18,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:03:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 251 transitions. [2021-02-23 23:03:18,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 23:03:18,799 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:18,799 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] [2021-02-23 23:03:18,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:03:18,800 INFO L428 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:18,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:18,801 INFO L82 PathProgramCache]: Analyzing trace with hash 229322597, now seen corresponding path program 1 times [2021-02-23 23:03:18,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:18,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702989836] [2021-02-23 23:03:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:18,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:18,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:18,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:18,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:03:18,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:18,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:18,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:18,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:18,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:18,974 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 23:03:18,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702989836] [2021-02-23 23:03:18,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:18,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:03:18,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448233295] [2021-02-23 23:03:18,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:03:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:03:18,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:03:18,979 INFO L87 Difference]: Start difference. First operand 228 states and 251 transitions. Second operand 4 states. [2021-02-23 23:03:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:19,544 INFO L93 Difference]: Finished difference Result 457 states and 506 transitions. [2021-02-23 23:03:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:03:19,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-02-23 23:03:19,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:19,548 INFO L225 Difference]: With dead ends: 457 [2021-02-23 23:03:19,549 INFO L226 Difference]: Without dead ends: 257 [2021-02-23 23:03:19,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:03:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-02-23 23:03:19,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 230. [2021-02-23 23:03:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2021-02-23 23:03:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 253 transitions. [2021-02-23 23:03:19,619 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 253 transitions. Word has length 21 [2021-02-23 23:03:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:19,619 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 253 transitions. [2021-02-23 23:03:19,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:03:19,619 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 253 transitions. [2021-02-23 23:03:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-23 23:03:19,620 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:19,621 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] [2021-02-23 23:03:19,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:03:19,621 INFO L428 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:19,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:19,622 INFO L82 PathProgramCache]: Analyzing trace with hash -197050510, now seen corresponding path program 1 times [2021-02-23 23:03:19,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:19,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931570124] [2021-02-23 23:03:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:19,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:19,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:19,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,729 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:19,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:19,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:19,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:19,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:19,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:19,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:19,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:03:19,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931570124] [2021-02-23 23:03:19,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:19,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:03:19,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004816204] [2021-02-23 23:03:19,803 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:03:19,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:03:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:03:19,804 INFO L87 Difference]: Start difference. First operand 230 states and 253 transitions. Second operand 8 states. [2021-02-23 23:03:20,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:20,673 INFO L93 Difference]: Finished difference Result 322 states and 359 transitions. [2021-02-23 23:03:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 23:03:20,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2021-02-23 23:03:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:20,678 INFO L225 Difference]: With dead ends: 322 [2021-02-23 23:03:20,679 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 23:03:20,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:03:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 23:03:20,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 235. [2021-02-23 23:03:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2021-02-23 23:03:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 258 transitions. [2021-02-23 23:03:20,783 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 258 transitions. Word has length 37 [2021-02-23 23:03:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:20,784 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 258 transitions. [2021-02-23 23:03:20,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:03:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 258 transitions. [2021-02-23 23:03:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:03:20,790 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:20,791 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] [2021-02-23 23:03:20,791 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:03:20,792 INFO L428 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash 419317582, now seen corresponding path program 1 times [2021-02-23 23:03:20,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:20,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913673709] [2021-02-23 23:03:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:20,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:20,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:20,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:20,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:03:20,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:20,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:03:20,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:20,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:03:20,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:20,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:21,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:21,022 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 23:03:21,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913673709] [2021-02-23 23:03:21,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:21,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:03:21,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381949830] [2021-02-23 23:03:21,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:03:21,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:03:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:03:21,025 INFO L87 Difference]: Start difference. First operand 235 states and 258 transitions. Second operand 6 states. [2021-02-23 23:03:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:21,808 INFO L93 Difference]: Finished difference Result 252 states and 277 transitions. [2021-02-23 23:03:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:03:21,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 23:03:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:21,812 INFO L225 Difference]: With dead ends: 252 [2021-02-23 23:03:21,812 INFO L226 Difference]: Without dead ends: 248 [2021-02-23 23:03:21,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:03:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-02-23 23:03:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2021-02-23 23:03:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2021-02-23 23:03:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 255 transitions. [2021-02-23 23:03:21,851 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 255 transitions. Word has length 46 [2021-02-23 23:03:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:21,851 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 255 transitions. [2021-02-23 23:03:21,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:03:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 255 transitions. [2021-02-23 23:03:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 23:03:21,853 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:21,854 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] [2021-02-23 23:03:21,854 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:03:21,854 INFO L428 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:21,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1961313628, now seen corresponding path program 1 times [2021-02-23 23:03:21,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:21,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522568420] [2021-02-23 23:03:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:21,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:21,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-23 23:03:21,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:03:21,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:03:21,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:21,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:21,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:21,976 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:21,983 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 23:03:21,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522568420] [2021-02-23 23:03:21,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:21,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:03:21,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593012747] [2021-02-23 23:03:21,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:03:21,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:21,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:03:21,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:03:21,987 INFO L87 Difference]: Start difference. First operand 233 states and 255 transitions. Second operand 6 states. [2021-02-23 23:03:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:22,737 INFO L93 Difference]: Finished difference Result 250 states and 274 transitions. [2021-02-23 23:03:22,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:03:22,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-23 23:03:22,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:22,740 INFO L225 Difference]: With dead ends: 250 [2021-02-23 23:03:22,740 INFO L226 Difference]: Without dead ends: 246 [2021-02-23 23:03:22,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:03:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-02-23 23:03:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 231. [2021-02-23 23:03:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2021-02-23 23:03:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 252 transitions. [2021-02-23 23:03:22,770 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 252 transitions. Word has length 46 [2021-02-23 23:03:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:22,771 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 252 transitions. [2021-02-23 23:03:22,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:03:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 252 transitions. [2021-02-23 23:03:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-23 23:03:22,772 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:22,773 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] [2021-02-23 23:03:22,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:03:22,773 INFO L428 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:22,774 INFO L82 PathProgramCache]: Analyzing trace with hash 186398228, now seen corresponding path program 1 times [2021-02-23 23:03:22,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:22,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879045169] [2021-02-23 23:03:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:22,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:22,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:03:22,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:03:22,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:22,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:03:22,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:22,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:22,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:22,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:22,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:22,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:22,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:22,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:22,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:03:22,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879045169] [2021-02-23 23:03:22,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:22,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 23:03:22,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850406038] [2021-02-23 23:03:22,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:03:22,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:22,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:03:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:03:22,974 INFO L87 Difference]: Start difference. First operand 231 states and 252 transitions. Second operand 11 states. [2021-02-23 23:03:24,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:24,171 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2021-02-23 23:03:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:03:24,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2021-02-23 23:03:24,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:24,175 INFO L225 Difference]: With dead ends: 303 [2021-02-23 23:03:24,175 INFO L226 Difference]: Without dead ends: 299 [2021-02-23 23:03:24,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-23 23:03:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-02-23 23:03:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 238. [2021-02-23 23:03:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2021-02-23 23:03:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 259 transitions. [2021-02-23 23:03:24,207 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 259 transitions. Word has length 50 [2021-02-23 23:03:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:24,208 INFO L480 AbstractCegarLoop]: Abstraction has 238 states and 259 transitions. [2021-02-23 23:03:24,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:03:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 259 transitions. [2021-02-23 23:03:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-02-23 23:03:24,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:24,209 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] [2021-02-23 23:03:24,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 23:03:24,210 INFO L428 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1232048662, now seen corresponding path program 1 times [2021-02-23 23:03:24,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:24,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308258257] [2021-02-23 23:03:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:24,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:24,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:03:24,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:03:24,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:24,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:03:24,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:24,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,288 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:24,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:24,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:03:24,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:03:24,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:03:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:03:24,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:03:24,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:03:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:03:24,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308258257] [2021-02-23 23:03:24,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:03:24,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 23:03:24,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700680382] [2021-02-23 23:03:24,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:03:24,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:03:24,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:03:24,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:03:24,364 INFO L87 Difference]: Start difference. First operand 238 states and 259 transitions. Second operand 11 states. [2021-02-23 23:03:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:03:25,513 INFO L93 Difference]: Finished difference Result 301 states and 330 transitions. [2021-02-23 23:03:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 23:03:25,513 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2021-02-23 23:03:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:03:25,516 INFO L225 Difference]: With dead ends: 301 [2021-02-23 23:03:25,517 INFO L226 Difference]: Without dead ends: 297 [2021-02-23 23:03:25,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-02-23 23:03:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-02-23 23:03:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 245. [2021-02-23 23:03:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2021-02-23 23:03:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 266 transitions. [2021-02-23 23:03:25,553 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 266 transitions. Word has length 50 [2021-02-23 23:03:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:03:25,554 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 266 transitions. [2021-02-23 23:03:25,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:03:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 266 transitions. [2021-02-23 23:03:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 23:03:25,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:03:25,555 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] [2021-02-23 23:03:25,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 23:03:25,556 INFO L428 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:03:25,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:03:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1026078147, now seen corresponding path program 1 times [2021-02-23 23:03:25,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:03:25,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360495403] [2021-02-23 23:03:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:03:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:03:25,585 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:03:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:03:25,607 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:03:25,651 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:03:25,651 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:03:25,652 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 23:03:25,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:03:25 BoogieIcfgContainer [2021-02-23 23:03:25,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:03:25,733 INFO L168 Benchmark]: Toolchain (without parser) took 10385.92 ms. Allocated memory was 164.6 MB in the beginning and 280.0 MB in the end (delta: 115.3 MB). Free memory was 139.9 MB in the beginning and 97.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 158.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:03:25,734 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 164.6 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:03:25,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.26 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 115.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:03:25,738 INFO L168 Benchmark]: Boogie Preprocessor took 157.56 ms. Allocated memory is still 164.6 MB. Free memory was 115.0 MB in the beginning and 147.0 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:03:25,739 INFO L168 Benchmark]: RCFGBuilder took 1237.90 ms. Allocated memory is still 164.6 MB. Free memory was 146.5 MB in the beginning and 68.9 MB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:03:25,740 INFO L168 Benchmark]: TraceAbstraction took 8366.47 ms. Allocated memory was 164.6 MB in the beginning and 280.0 MB in the end (delta: 115.3 MB). Free memory was 68.9 MB in the beginning and 97.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 87.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:03:25,748 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 164.6 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 599.26 ms. Allocated memory is still 164.6 MB. Free memory was 138.9 MB in the beginning and 115.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 157.56 ms. Allocated memory is still 164.6 MB. Free memory was 115.0 MB in the beginning and 147.0 MB in the end (delta: -32.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1237.90 ms. Allocated memory is still 164.6 MB. Free memory was 146.5 MB in the beginning and 68.9 MB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8366.47 ms. Allocated memory was 164.6 MB in the beginning and 280.0 MB in the end (delta: 115.3 MB). Free memory was 68.9 MB in the beginning and 97.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 87.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); VAL [data={0:0}] [L639] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, data={0:0}] [L640] struct node *node = malloc(sizeof *node); VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L641] COND FALSE !(!node) VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L643] node->next = node VAL [data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L644] node->value = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-2, data={0:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L645] struct list *item = malloc(sizeof *item); VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L646] COND FALSE !(!item) VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L648] item->slist = node VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L649] item->next = data VAL [data={0:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L650] data = item VAL [data={-3:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L639] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, data={-3:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L652] COND FALSE !(!data) VAL [data={-3:0}, item={-3:0}, malloc(sizeof *item)={-3:0}, malloc(sizeof *node)={-1:0}, node={-1:0}] [L654] CALL inspect_before(data) VAL [shape={-3:0}] [L615] COND FALSE !(!(shape)) VAL [shape={-3:0}, shape={-3:0}] [L616] shape->next VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L616] COND FALSE !(shape->next) VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L622] COND FALSE !(!(shape)) VAL [shape={-3:0}, shape={-3:0}] [L623] EXPR shape->next VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L623] COND FALSE !(!(shape->next == ((void *)0))) VAL [shape={-3:0}, shape={-3:0}, shape->next={0:0}] [L624] EXPR shape->slist VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}] [L624] COND FALSE !(!(shape->slist)) VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}] [L625] EXPR shape->slist VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}] [L625] EXPR shape->slist->next VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}, shape->slist->next={-1:0}] [L625] COND TRUE !(shape->slist->next == ((void *)0)) VAL [shape={-3:0}, shape={-3:0}, shape->slist={-1:0}, shape->slist->next={-1:0}] [L625] CALL fail() [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 268 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.1s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1676 SDtfs, 1822 SDslu, 2931 SDs, 0 SdLazy, 4616 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 280 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 325 NumberOfCodeBlocks, 325 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 45764 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...