/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:01:43,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:01:43,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:01:43,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:01:43,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:01:43,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:01:43,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:01:43,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:01:43,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:01:43,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:01:43,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:01:43,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:01:43,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:01:43,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:01:43,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:01:43,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:01:43,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:01:43,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:01:43,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:01:43,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:01:43,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:01:43,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:01:43,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:01:43,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:01:43,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:01:43,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:01:43,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:01:43,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:01:43,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:01:43,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:01:43,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:01:43,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:01:43,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:01:43,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:01:43,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:01:43,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:01:43,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:01:43,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:01:43,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:01:43,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:01:43,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:01:43,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:01:43,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:01:43,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:01:43,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:01:43,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:01:43,991 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:01:43,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:01:43,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:01:43,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:01:43,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:01:43,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:01:43,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:01:43,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:01:43,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:01:43,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:01:43,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:01:43,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:01:43,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:01:43,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:01:43,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:01:43,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:01:43,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:01:43,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:01:43,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:01:43,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:01:43,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:01:44,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:01:44,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:01:44,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:01:44,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:01:44,288 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:01:44,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-17 12:01:44,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddab091/008887896e074df69da3e49d9f9d3d1c/FLAG42a0cacd0 [2020-07-17 12:01:44,881 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:01:44,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-17 12:01:44,894 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddab091/008887896e074df69da3e49d9f9d3d1c/FLAG42a0cacd0 [2020-07-17 12:01:45,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddab091/008887896e074df69da3e49d9f9d3d1c [2020-07-17 12:01:45,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:01:45,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:01:45,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:45,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:01:45,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:01:45,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be4e3d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45, skipping insertion in model container [2020-07-17 12:01:45,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:01:45,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:01:45,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:45,690 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:01:45,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:45,807 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:01:45,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45 WrapperNode [2020-07-17 12:01:45,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:45,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:01:45,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:01:45,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:01:45,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (1/1) ... [2020-07-17 12:01:45,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:01:45,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:01:45,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:01:45,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:01:45,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (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 [2020-07-17 12:01:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:01:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:01:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-17 12:01:45,934 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-07-17 12:01:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-07-17 12:01:45,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:01:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:01:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:01:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 12:01:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 12:01:45,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 12:01:45,937 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-17 12:01:45,938 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 12:01:45,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 12:01:45,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 12:01:45,941 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 12:01:45,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 12:01:45,943 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 12:01:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 12:01:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 12:01:45,946 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 12:01:45,947 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 12:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 12:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 12:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 12:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 12:01:45,948 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 12:01:45,949 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 12:01:45,950 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 12:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 12:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 12:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 12:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 12:01:45,951 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-07-17 12:01:45,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:01:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 12:01:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-07-17 12:01:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:01:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:01:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 12:01:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:01:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:01:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:01:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:01:46,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:01:46,437 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 12:01:46,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:46 BoogieIcfgContainer [2020-07-17 12:01:46,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:01:46,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:01:46,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:01:46,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:01:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:01:45" (1/3) ... [2020-07-17 12:01:46,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba2d478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:46, skipping insertion in model container [2020-07-17 12:01:46,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:45" (2/3) ... [2020-07-17 12:01:46,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba2d478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:46, skipping insertion in model container [2020-07-17 12:01:46,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:46" (3/3) ... [2020-07-17 12:01:46,450 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-07-17 12:01:46,458 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:01:46,465 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:01:46,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:01:46,498 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:01:46,498 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:01:46,498 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:01:46,498 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:01:46,499 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:01:46,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:01:46,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:01:46,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:01:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-17 12:01:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:01:46,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:46,526 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:46,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash -125905961, now seen corresponding path program 1 times [2020-07-17 12:01:46,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:46,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417869716] [2020-07-17 12:01:46,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-17 12:01:47,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417869716] [2020-07-17 12:01:47,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456258121] [2020-07-17 12:01:47,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:01:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,268 INFO L264 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-17 12:01:47,281 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:01:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-17 12:01:47,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:01:47,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2020-07-17 12:01:47,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759907047] [2020-07-17 12:01:47,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 12:01:47,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:47,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 12:01:47,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:01:47,324 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-07-17 12:01:47,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:47,350 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-07-17 12:01:47,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 12:01:47,351 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-07-17 12:01:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:47,361 INFO L225 Difference]: With dead ends: 58 [2020-07-17 12:01:47,361 INFO L226 Difference]: Without dead ends: 33 [2020-07-17 12:01:47,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:01:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-17 12:01:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-17 12:01:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-17 12:01:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-07-17 12:01:47,409 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 45 [2020-07-17 12:01:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:47,411 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-07-17 12:01:47,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 12:01:47,411 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-07-17 12:01:47,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 12:01:47,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:47,414 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:47,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-17 12:01:47,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:47,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1842115760, now seen corresponding path program 1 times [2020-07-17 12:01:47,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:47,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714643055] [2020-07-17 12:01:47,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,834 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-17 12:01:47,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714643055] [2020-07-17 12:01:47,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200301004] [2020-07-17 12:01:47,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:01:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:47,985 INFO L264 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-17 12:01:47,989 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:01:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 12:01:48,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:01:48,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-07-17 12:01:48,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24017349] [2020-07-17 12:01:48,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:01:48,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:48,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:01:48,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:01:48,022 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 8 states. [2020-07-17 12:01:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:48,373 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2020-07-17 12:01:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 12:01:48,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-07-17 12:01:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:48,376 INFO L225 Difference]: With dead ends: 73 [2020-07-17 12:01:48,376 INFO L226 Difference]: Without dead ends: 49 [2020-07-17 12:01:48,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-07-17 12:01:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-17 12:01:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-07-17 12:01:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-17 12:01:48,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-07-17 12:01:48,390 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 47 [2020-07-17 12:01:48,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:48,390 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-07-17 12:01:48,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:01:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-07-17 12:01:48,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 12:01:48,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:48,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:48,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:01:48,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:48,607 INFO L82 PathProgramCache]: Analyzing trace with hash 874015054, now seen corresponding path program 1 times [2020-07-17 12:01:48,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:48,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252842403] [2020-07-17 12:01:48,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:48,678 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-07-17 12:01:48,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:01:48,680 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:337) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) 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) [2020-07-17 12:01:48,686 INFO L168 Benchmark]: Toolchain (without parser) took 3492.91 ms. Allocated memory was 145.8 MB in the beginning and 246.9 MB in the end (delta: 101.2 MB). Free memory was 102.5 MB in the beginning and 165.7 MB in the end (delta: -63.2 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:48,687 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:01:48,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.61 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 169.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:48,689 INFO L168 Benchmark]: Boogie Preprocessor took 62.06 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 167.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:48,690 INFO L168 Benchmark]: RCFGBuilder took 570.81 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 122.4 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:48,691 INFO L168 Benchmark]: TraceAbstraction took 2240.20 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 121.7 MB in the beginning and 165.7 MB in the end (delta: -43.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 12:01:48,695 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.61 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 102.1 MB in the beginning and 169.8 MB in the end (delta: -67.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.06 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 167.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.81 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 122.4 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2240.20 ms. Allocated memory was 203.4 MB in the beginning and 246.9 MB in the end (delta: 43.5 MB). Free memory was 121.7 MB in the beginning and 165.7 MB in the end (delta: -43.9 MB). There was no memory consumed. 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...