/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -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 0.1.25-5644d1e-m [2020-08-18 23:32:16,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:32:16,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:32:17,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:32:17,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:32:17,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:32:17,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:32:17,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:32:17,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:32:17,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:32:17,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:32:17,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:32:17,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:32:17,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:32:17,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:32:17,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:32:17,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:32:17,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:32:17,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:32:17,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:32:17,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:32:17,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:32:17,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:32:17,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:32:17,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:32:17,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:32:17,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:32:17,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:32:17,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:32:17,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:32:17,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:32:17,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:32:17,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:32:17,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:32:17,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:32:17,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:32:17,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:32:17,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:32:17,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:32:17,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:32:17,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:32:17,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:32:17,134 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:32:17,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:32:17,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:32:17,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:32:17,137 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:32:17,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:32:17,138 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:32:17,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:32:17,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:32:17,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:32:17,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:32:17,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:32:17,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:32:17,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:32:17,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:32:17,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:32:17,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:32:17,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:32:17,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:32:17,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:32:17,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:32:17,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:32:17,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:32:17,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:32:17,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:32:17,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:32:17,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:32:17,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:32:17,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:32:17,143 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:32:17,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:32:17,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:32:17,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:32:17,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:32:17,470 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:32:17,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 23:32:17,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fff5f329/23119f0726874dcab4c4c6506f2b4e86/FLAG2d2ecafaa [2020-08-18 23:32:18,090 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:32:18,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 23:32:18,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fff5f329/23119f0726874dcab4c4c6506f2b4e86/FLAG2d2ecafaa [2020-08-18 23:32:18,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fff5f329/23119f0726874dcab4c4c6506f2b4e86 [2020-08-18 23:32:18,412 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:32:18,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:32:18,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:32:18,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:32:18,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:32:18,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:32:18" (1/1) ... [2020-08-18 23:32:18,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:18, skipping insertion in model container [2020-08-18 23:32:18,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:32:18" (1/1) ... [2020-08-18 23:32:18,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:32:18,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:32:19,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:32:19,037 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:32:19,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:32:19,163 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:32:19,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19 WrapperNode [2020-08-18 23:32:19,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:32:19,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:32:19,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:32:19,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:32:19,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... [2020-08-18 23:32:19,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:32:19,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:32:19,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:32:19,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:32:19,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:32:19,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:32:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:32:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 23:32:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 23:32:19,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 23:32:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-18 23:32:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-18 23:32:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-18 23:32:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-18 23:32:19,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-18 23:32:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-18 23:32:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-18 23:32:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-18 23:32:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-18 23:32:19,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-18 23:32:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-18 23:32:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-18 23:32:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-18 23:32:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-18 23:32:19,354 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-18 23:32:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-18 23:32:19,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:32:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:32:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 23:32:19,355 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 23:32:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 23:32:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 23:32:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 23:32:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 23:32:19,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 23:32:19,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 23:32:19,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 23:32:19,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 23:32:19,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 23:32:19,361 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 23:32:19,362 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 23:32:19,363 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 23:32:19,364 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 23:32:19,365 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 23:32:19,366 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 23:32:19,367 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 23:32:19,368 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 23:32:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 23:32:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:32:19,371 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-18 23:32:19,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-18 23:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-18 23:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:32:20,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:32:20,218 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-18 23:32:20,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:32:20 BoogieIcfgContainer [2020-08-18 23:32:20,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:32:20,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:32:20,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:32:20,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:32:20,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:32:18" (1/3) ... [2020-08-18 23:32:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bca7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:32:20, skipping insertion in model container [2020-08-18 23:32:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:19" (2/3) ... [2020-08-18 23:32:20,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bca7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:32:20, skipping insertion in model container [2020-08-18 23:32:20,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:32:20" (3/3) ... [2020-08-18 23:32:20,234 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-18 23:32:20,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:32:20,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:32:20,272 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:32:20,300 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:32:20,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:32:20,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:32:20,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:32:20,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:32:20,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:32:20,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:32:20,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:32:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 23:32:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 23:32:20,336 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:20,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:20,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-18 23:32:20,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:20,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015186283] [2020-08-18 23:32:20,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 23:32:20,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015186283] [2020-08-18 23:32:20,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:20,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 23:32:20,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650175655] [2020-08-18 23:32:20,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 23:32:20,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:20,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 23:32:20,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 23:32:20,965 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 23:32:21,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:21,426 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-18 23:32:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 23:32:21,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 23:32:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:21,443 INFO L225 Difference]: With dead ends: 343 [2020-08-18 23:32:21,443 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 23:32:21,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 23:32:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 23:32:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-18 23:32:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 23:32:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-18 23:32:21,522 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-18 23:32:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:21,522 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-18 23:32:21,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 23:32:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-18 23:32:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 23:32:21,526 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:21,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:21,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:32:21,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-18 23:32:21,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:21,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575236346] [2020-08-18 23:32:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:22,005 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 23:32:22,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575236346] [2020-08-18 23:32:22,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:32:22,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 23:32:22,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348904385] [2020-08-18 23:32:22,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 23:32:22,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:22,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 23:32:22,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-18 23:32:22,009 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-18 23:32:23,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:23,228 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-18 23:32:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 23:32:23,229 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-18 23:32:23,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:23,232 INFO L225 Difference]: With dead ends: 327 [2020-08-18 23:32:23,232 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 23:32:23,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-18 23:32:23,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 23:32:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-18 23:32:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 23:32:23,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-18 23:32:23,301 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-18 23:32:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:23,301 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-18 23:32:23,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 23:32:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-18 23:32:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:32:23,305 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:23,305 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:23,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:32:23,306 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:23,306 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-18 23:32:23,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:23,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251558029] [2020-08-18 23:32:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:32:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 23:32:24,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251558029] [2020-08-18 23:32:24,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:32:24,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 23:32:24,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921721642] [2020-08-18 23:32:24,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 23:32:24,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:24,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 23:32:24,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:32:24,783 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-18 23:32:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:27,933 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-18 23:32:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 23:32:27,934 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 23:32:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:27,938 INFO L225 Difference]: With dead ends: 348 [2020-08-18 23:32:27,939 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 23:32:27,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 23:32:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 23:32:27,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-18 23:32:27,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 23:32:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-18 23:32:27,962 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-18 23:32:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:27,962 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-18 23:32:27,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 23:32:27,963 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-18 23:32:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:32:27,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:27,965 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:27,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:32:27,966 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:27,966 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-18 23:32:27,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:27,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882718909] [2020-08-18 23:32:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:28,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:32:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-18 23:32:29,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882718909] [2020-08-18 23:32:29,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:32:29,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 23:32:29,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464688924] [2020-08-18 23:32:29,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 23:32:29,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 23:32:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-18 23:32:29,328 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-18 23:32:31,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:31,549 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-18 23:32:31,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 23:32:31,550 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-18 23:32:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:31,555 INFO L225 Difference]: With dead ends: 360 [2020-08-18 23:32:31,558 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 23:32:31,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-18 23:32:31,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 23:32:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-18 23:32:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 23:32:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-18 23:32:31,601 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-18 23:32:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:31,602 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-18 23:32:31,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 23:32:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-18 23:32:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:32:31,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:31,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:31,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:32:31,609 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:31,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:31,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-18 23:32:31,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:31,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57411063] [2020-08-18 23:32:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:31,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:32:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-18 23:32:33,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57411063] [2020-08-18 23:32:33,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:32:33,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 23:32:33,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585746950] [2020-08-18 23:32:33,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 23:32:33,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 23:32:33,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 23:32:33,320 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-18 23:32:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:36,130 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-18 23:32:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 23:32:36,131 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 23:32:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:36,136 INFO L225 Difference]: With dead ends: 371 [2020-08-18 23:32:36,137 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 23:32:36,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 23:32:36,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 23:32:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-18 23:32:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-18 23:32:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-18 23:32:36,159 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-18 23:32:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:36,160 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-18 23:32:36,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 23:32:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-18 23:32:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 23:32:36,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:36,162 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:36,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:32:36,163 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-18 23:32:36,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:36,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026344372] [2020-08-18 23:32:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:32:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:37,498 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 23:32:37,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026344372] [2020-08-18 23:32:37,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:32:37,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 23:32:37,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648956265] [2020-08-18 23:32:37,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 23:32:37,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:37,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 23:32:37,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-18 23:32:37,501 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-18 23:32:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:39,664 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-18 23:32:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 23:32:39,665 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-18 23:32:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:39,671 INFO L225 Difference]: With dead ends: 323 [2020-08-18 23:32:39,671 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 23:32:39,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 23:32:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 23:32:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-18 23:32:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 23:32:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-18 23:32:39,706 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-18 23:32:39,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:39,708 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-18 23:32:39,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 23:32:39,708 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-18 23:32:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 23:32:39,711 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:39,711 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:39,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:32:39,712 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:39,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-18 23:32:39,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:39,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906370590] [2020-08-18 23:32:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:40,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 23:32:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:41,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:41,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:41,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:42,243 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-18 23:32:43,138 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-18 23:32:43,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:43,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 23:32:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:44,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 23:32:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:44,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 23:32:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:32:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:45,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 23:32:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:46,478 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-18 23:32:46,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat