/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:29:00,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:29:00,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:29:00,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:29:00,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:29:00,922 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:29:00,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:29:00,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:29:00,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:29:00,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:29:00,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:29:00,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:29:00,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:29:00,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:29:00,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:29:00,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:29:00,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:29:00,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:29:00,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:29:00,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:29:00,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:29:00,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:29:00,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:29:00,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:29:00,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:29:00,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:29:00,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:29:00,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:29:00,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:29:00,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:29:00,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:29:00,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:29:00,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:29:00,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:29:00,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:29:00,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:29:00,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:29:00,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:29:00,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:29:00,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:29:00,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:29:00,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:29:00,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:29:00,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:29:00,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:29:00,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:29:00,983 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:29:00,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:29:00,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:29:00,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:29:00,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:29:00,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:29:00,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:29:00,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:29:00,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:29:00,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:29:00,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:29:00,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:29:00,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:29:00,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:29:00,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:29:00,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:29:00,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:29:00,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:29:00,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:29:00,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:29:00,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:29:00,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:29:00,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:29:00,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:29:00,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:29:00,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:29:01,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:29:01,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:29:01,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:29:01,321 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:29:01,322 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:29:01,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-18 15:29:01,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ff19c3b/731ea40b0ef34a9eaf2519183966c15d/FLAGf0b151051 [2020-08-18 15:29:01,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:29:01,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-18 15:29:01,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ff19c3b/731ea40b0ef34a9eaf2519183966c15d/FLAGf0b151051 [2020-08-18 15:29:02,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97ff19c3b/731ea40b0ef34a9eaf2519183966c15d [2020-08-18 15:29:02,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:29:02,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:29:02,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:02,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:29:02,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:29:02,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:02,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb9198f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02, skipping insertion in model container [2020-08-18 15:29:02,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:02,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:29:02,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:29:02,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:02,819 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:29:02,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:29:02,960 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:29:02,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02 WrapperNode [2020-08-18 15:29:02,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:29:02,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:29:02,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:29:02,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:29:02,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:02,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:02,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:03,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:03,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:03,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:03,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... [2020-08-18 15:29:03,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:29:03,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:29:03,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:29:03,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:29:03,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 15:29:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-18 15:29:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-18 15:29:03,123 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-18 15:29:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-18 15:29:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-18 15:29:03,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:29:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:29:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 15:29:03,124 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 15:29:03,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 15:29:03,126 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 15:29:03,127 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 15:29:03,128 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 15:29:03,129 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 15:29:03,130 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 15:29:03,131 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 15:29:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 15:29:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 15:29:03,134 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 15:29:03,135 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 15:29:03,136 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 15:29:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 15:29:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 15:29:03,139 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:29:03,140 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-18 15:29:03,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-18 15:29:03,142 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-18 15:29:03,143 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:29:03,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:29:04,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:29:04,019 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-18 15:29:04,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:04 BoogieIcfgContainer [2020-08-18 15:29:04,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:29:04,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:29:04,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:29:04,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:29:04,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:29:02" (1/3) ... [2020-08-18 15:29:04,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2389d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:04, skipping insertion in model container [2020-08-18 15:29:04,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:29:02" (2/3) ... [2020-08-18 15:29:04,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2389d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:29:04, skipping insertion in model container [2020-08-18 15:29:04,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:29:04" (3/3) ... [2020-08-18 15:29:04,033 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-18 15:29:04,044 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:29:04,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:29:04,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:29:04,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:29:04,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:29:04,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:29:04,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:29:04,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:29:04,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:29:04,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:29:04,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:29:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 15:29:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 15:29:04,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:04,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:04,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:04,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-18 15:29:04,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:04,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014068725] [2020-08-18 15:29:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 15:29:04,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014068725] [2020-08-18 15:29:04,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:29:04,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:29:04,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734201950] [2020-08-18 15:29:04,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:29:04,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:04,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:29:04,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:29:04,673 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 15:29:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:05,129 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-18 15:29:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 15:29:05,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 15:29:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:05,146 INFO L225 Difference]: With dead ends: 343 [2020-08-18 15:29:05,146 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 15:29:05,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:29:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 15:29:05,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-18 15:29:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 15:29:05,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-18 15:29:05,222 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-18 15:29:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:05,223 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-18 15:29:05,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:29:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-18 15:29:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 15:29:05,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:05,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:05,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:29:05,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-18 15:29:05,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:05,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452354276] [2020-08-18 15:29:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:05,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 15:29:05,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452354276] [2020-08-18 15:29:05,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:05,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 15:29:05,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513081785] [2020-08-18 15:29:05,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 15:29:05,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:05,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 15:29:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:29:05,756 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-18 15:29:06,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:06,993 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-18 15:29:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 15:29:06,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-18 15:29:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:06,999 INFO L225 Difference]: With dead ends: 327 [2020-08-18 15:29:06,999 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 15:29:07,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-18 15:29:07,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 15:29:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-18 15:29:07,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 15:29:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-18 15:29:07,046 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-18 15:29:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:07,046 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-18 15:29:07,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 15:29:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-18 15:29:07,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 15:29:07,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:07,051 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:07,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:29:07,053 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:07,054 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-18 15:29:07,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:07,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013728683] [2020-08-18 15:29:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:07,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 15:29:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:08,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-18 15:29:09,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013728683] [2020-08-18 15:29:09,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:09,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-18 15:29:09,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214246029] [2020-08-18 15:29:09,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-18 15:29:09,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-18 15:29:09,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-18 15:29:09,039 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-18 15:29:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:12,696 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-18 15:29:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 15:29:12,696 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-18 15:29:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:12,699 INFO L225 Difference]: With dead ends: 358 [2020-08-18 15:29:12,700 INFO L226 Difference]: Without dead ends: 196 [2020-08-18 15:29:12,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 15:29:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-18 15:29:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-18 15:29:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-18 15:29:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-18 15:29:12,729 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-18 15:29:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:12,730 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-18 15:29:12,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-18 15:29:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-18 15:29:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 15:29:12,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:12,733 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:12,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:29:12,733 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:12,734 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-18 15:29:12,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:12,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963208926] [2020-08-18 15:29:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:12,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 15:29:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-18 15:29:13,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963208926] [2020-08-18 15:29:13,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:13,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 15:29:13,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296873897] [2020-08-18 15:29:13,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 15:29:13,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 15:29:13,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-18 15:29:13,895 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-18 15:29:16,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:16,151 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-18 15:29:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 15:29:16,152 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-18 15:29:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:16,155 INFO L225 Difference]: With dead ends: 375 [2020-08-18 15:29:16,156 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 15:29:16,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-18 15:29:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 15:29:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-18 15:29:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-18 15:29:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-18 15:29:16,184 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-18 15:29:16,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:16,186 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-18 15:29:16,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 15:29:16,186 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-18 15:29:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 15:29:16,189 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:16,192 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:16,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:29:16,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-18 15:29:16,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:16,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697846282] [2020-08-18 15:29:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 15:29:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 15:29:17,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697846282] [2020-08-18 15:29:17,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 15:29:17,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 15:29:17,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238865109] [2020-08-18 15:29:17,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 15:29:17,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:29:17,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 15:29:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-18 15:29:17,407 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-18 15:29:19,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:29:19,603 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-18 15:29:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 15:29:19,604 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-18 15:29:19,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:29:19,607 INFO L225 Difference]: With dead ends: 327 [2020-08-18 15:29:19,608 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 15:29:19,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 15:29:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 15:29:19,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-18 15:29:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-18 15:29:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-18 15:29:19,638 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-18 15:29:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:29:19,638 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-18 15:29:19,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 15:29:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-18 15:29:19,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 15:29:19,641 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:29:19,641 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:29:19,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:29:19,642 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:29:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:29:19,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-18 15:29:19,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:29:19,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436902872] [2020-08-18 15:29:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:29:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:19,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 15:29:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 15:29:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 15:29:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:20,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:29:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 15:29:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:29:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:22,555 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-18 15:29:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:29:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:29:35,714 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 257 DAG size of output: 48