/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 true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:59:41,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:59:41,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:59:41,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:59:41,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:59:41,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:59:41,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:59:41,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:59:41,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:59:41,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:59:41,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:59:41,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:59:41,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:59:41,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:59:41,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:59:41,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:59:41,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:59:41,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:59:41,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:59:41,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:59:41,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:59:41,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:59:41,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:59:41,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:59:41,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:59:41,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:59:41,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:59:41,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:59:41,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:59:41,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:59:41,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:59:41,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:59:41,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:59:41,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:59:41,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:59:41,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:59:41,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:59:41,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:59:41,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:59:41,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:59:41,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:59:41,986 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 [2020-08-21 22:59:42,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:59:42,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:59:42,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:59:42,033 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:59:42,033 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:59:42,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:59:42,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:59:42,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:59:42,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:59:42,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:59:42,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:59:42,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:59:42,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:59:42,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:59:42,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:59:42,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:59:42,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:59:42,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:59:42,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:59:42,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:59:42,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:59:42,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:59:42,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:59:42,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:59:42,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:59:42,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:59:42,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:59:42,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:59:42,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:59:42,040 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:59:42,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:59:42,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:59:42,343 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:59:42,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:59:42,344 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:59:42,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 22:59:42,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f5c2f06/0c9489b87ffc4dd0bb53b1e1fb41b40c/FLAG97e9f0c2c [2020-08-21 22:59:42,969 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:59:42,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 22:59:42,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f5c2f06/0c9489b87ffc4dd0bb53b1e1fb41b40c/FLAG97e9f0c2c [2020-08-21 22:59:43,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3f5c2f06/0c9489b87ffc4dd0bb53b1e1fb41b40c [2020-08-21 22:59:43,223 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:59:43,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:59:43,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:43,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:59:43,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:59:43,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:43" (1/1) ... [2020-08-21 22:59:43,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787dafc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:43, skipping insertion in model container [2020-08-21 22:59:43,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:43" (1/1) ... [2020-08-21 22:59:43,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:59:43,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:59:43,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:43,854 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:59:43,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:44,017 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:59:44,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44 WrapperNode [2020-08-21 22:59:44,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:44,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:59:44,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:59:44,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:59:44,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (1/1) ... [2020-08-21 22:59:44,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:59:44,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:59:44,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:59:44,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:59:44,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (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 [2020-08-21 22:59:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:59:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:59:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:59:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 22:59:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 22:59:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 22:59:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 22:59:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 22:59:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 22:59:44,182 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 22:59:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 22:59:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 22:59:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 22:59:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 22:59:44,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 22:59:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 22:59:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 22:59:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 22:59:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 22:59:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 22:59:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 22:59:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:59:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:59:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 22:59:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 22:59:44,187 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 22:59:44,188 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 22:59:44,189 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 22:59:44,190 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 22:59:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 22:59:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 22:59:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 22:59:44,191 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 22:59:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 22:59:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 22:59:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 22:59:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 22:59:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 22:59:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 22:59:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 22:59:44,194 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 22:59:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 22:59:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 22:59:44,195 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 22:59:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 22:59:44,196 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 22:59:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 22:59:44,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 22:59:44,198 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 22:59:44,199 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 22:59:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 22:59:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 22:59:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 22:59:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 22:59:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 22:59:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 22:59:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 22:59:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 22:59:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 22:59:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 22:59:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 22:59:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 22:59:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 22:59:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 22:59:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 22:59:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 22:59:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 22:59:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 22:59:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 22:59:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 22:59:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 22:59:44,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:59:44,209 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 22:59:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 22:59:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:59:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:59:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 22:59:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 22:59:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:59:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 22:59:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:59:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:59:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 22:59:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:59:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 22:59:44,215 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 22:59:44,223 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 22:59:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 22:59:44,224 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 22:59:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:59:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:59:44,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:59:45,163 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:59:45,164 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 22:59:45,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:45 BoogieIcfgContainer [2020-08-21 22:59:45,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:59:45,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:59:45,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:59:45,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:59:45,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:59:43" (1/3) ... [2020-08-21 22:59:45,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd4c608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:45, skipping insertion in model container [2020-08-21 22:59:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:44" (2/3) ... [2020-08-21 22:59:45,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd4c608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:45, skipping insertion in model container [2020-08-21 22:59:45,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:45" (3/3) ... [2020-08-21 22:59:45,178 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-21 22:59:45,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:59:45,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:59:45,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:59:45,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:59:45,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:59:45,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:59:45,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:59:45,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:59:45,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:59:45,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:59:45,235 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:59:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 22:59:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:59:45,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:45,267 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] [2020-08-21 22:59:45,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:45,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:45,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 22:59:45,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:45,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308974405] [2020-08-21 22:59:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:45,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 22:59:45,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308974405] [2020-08-21 22:59:45,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:45,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:59:45,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375834310] [2020-08-21 22:59:45,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:59:45,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:45,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:59:45,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:59:45,849 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 22:59:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:46,388 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 22:59:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:59:46,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:59:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:46,413 INFO L225 Difference]: With dead ends: 343 [2020-08-21 22:59:46,413 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:59:46,424 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 [2020-08-21 22:59:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:59:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 22:59:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 22:59:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 22:59:46,516 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 22:59:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:46,516 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 22:59:46,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:59:46,517 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 22:59:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:59:46,520 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:46,521 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] [2020-08-21 22:59:46,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:59:46,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 22:59:46,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:46,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497164320] [2020-08-21 22:59:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 22:59:47,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497164320] [2020-08-21 22:59:47,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:47,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:59:47,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427430741] [2020-08-21 22:59:47,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:59:47,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:47,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:59:47,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:59:47,033 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 22:59:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:48,322 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 22:59:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:59:48,323 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 22:59:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:48,328 INFO L225 Difference]: With dead ends: 327 [2020-08-21 22:59:48,329 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 22:59:48,330 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 [2020-08-21 22:59:48,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 22:59:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 22:59:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 22:59:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 22:59:48,353 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 22:59:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:48,354 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 22:59:48,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:59:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 22:59:48,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:48,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:48,357 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] [2020-08-21 22:59:48,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:59:48,357 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:48,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:48,358 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 22:59:48,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:48,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59210755] [2020-08-21 22:59:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:48,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 22:59:50,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59210755] [2020-08-21 22:59:50,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:50,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 22:59:50,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959983120] [2020-08-21 22:59:50,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 22:59:50,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 22:59:50,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:59:50,014 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-21 22:59:53,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:53,119 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-21 22:59:53,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 22:59:53,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 22:59:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:53,124 INFO L225 Difference]: With dead ends: 348 [2020-08-21 22:59:53,124 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 22:59:53,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 22:59:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 22:59:53,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-21 22:59:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-21 22:59:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-21 22:59:53,149 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-21 22:59:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:53,150 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-21 22:59:53,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 22:59:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-21 22:59:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:53,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:53,153 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] [2020-08-21 22:59:53,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:59:53,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:53,154 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 22:59:53,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:53,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004002190] [2020-08-21 22:59:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 22:59:54,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004002190] [2020-08-21 22:59:54,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:54,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:59:54,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504474770] [2020-08-21 22:59:54,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:59:54,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:59:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:59:54,320 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-21 22:59:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:56,575 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-21 22:59:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:59:56,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 22:59:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:56,580 INFO L225 Difference]: With dead ends: 360 [2020-08-21 22:59:56,580 INFO L226 Difference]: Without dead ends: 193 [2020-08-21 22:59:56,581 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 [2020-08-21 22:59:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-21 22:59:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-21 22:59:56,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 22:59:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-21 22:59:56,602 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-21 22:59:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:56,603 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-21 22:59:56,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 22:59:56,603 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-21 22:59:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:59:56,606 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:56,606 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] [2020-08-21 22:59:56,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:59:56,607 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:56,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:56,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-21 22:59:56,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:56,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805848666] [2020-08-21 22:59:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:56,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:56,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:59:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:59:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:59:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:59:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:59:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:59:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-21 22:59:58,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805848666] [2020-08-21 22:59:58,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:59:58,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 22:59:58,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447706728] [2020-08-21 22:59:58,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 22:59:58,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:58,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 22:59:58,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:59:58,073 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-21 23:00:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:00:00,857 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-21 23:00:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 23:00:00,857 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 23:00:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:00:00,862 INFO L225 Difference]: With dead ends: 371 [2020-08-21 23:00:00,862 INFO L226 Difference]: Without dead ends: 198 [2020-08-21 23:00:00,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 23:00:00,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-21 23:00:00,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-21 23:00:00,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 23:00:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 23:00:00,897 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 23:00:00,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:00:00,898 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 23:00:00,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 23:00:00,899 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 23:00:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 23:00:00,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:00:00,903 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] [2020-08-21 23:00:00,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:00:00,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:00:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:00:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 23:00:00,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:00:00,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368572040] [2020-08-21 23:00:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:00:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:00:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:00:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:00:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:00:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:01,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:02,058 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 23:00:02,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368572040] [2020-08-21 23:00:02,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:00:02,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 23:00:02,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490220705] [2020-08-21 23:00:02,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 23:00:02,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:00:02,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 23:00:02,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:00:02,061 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-21 23:00:04,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:00:04,286 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-21 23:00:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 23:00:04,287 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 23:00:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:00:04,292 INFO L225 Difference]: With dead ends: 323 [2020-08-21 23:00:04,292 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 23:00:04,294 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 [2020-08-21 23:00:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 23:00:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-21 23:00:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 23:00:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-21 23:00:04,313 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-21 23:00:04,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:00:04,314 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-21 23:00:04,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 23:00:04,315 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-21 23:00:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 23:00:04,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:00:04,317 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] [2020-08-21 23:00:04,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:00:04,318 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:00:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:00:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 23:00:04,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:00:04,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848265672] [2020-08-21 23:00:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:00:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:04,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:00:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:04,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:05,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:06,409 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-21 23:00:07,292 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-21 23:00:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:07,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:00:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:08,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:08,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:00:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:08,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:00:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:00:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:00:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:10,351 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-21 23:00:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:00:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:00:39,125 WARN L193 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 449 DAG size of output: 50