/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:25:45,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:25:45,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:25:45,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:25:45,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:25:45,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:25:45,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:25:45,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:25:45,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:25:45,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:25:45,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:25:45,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:25:45,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:25:45,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:25:45,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:25:45,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:25:45,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:25:45,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:25:45,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:25:46,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:25:46,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:25:46,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:25:46,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:25:46,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:25:46,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:25:46,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:25:46,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:25:46,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:25:46,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:25:46,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:25:46,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:25:46,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:25:46,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:25:46,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:25:46,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:25:46,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:25:46,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:25:46,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:25:46,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:25:46,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:25:46,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:25:46,029 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 [2020-08-22 01:25:46,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:25:46,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:25:46,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:25:46,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:25:46,078 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:25:46,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:25:46,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:25:46,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:25:46,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:25:46,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:25:46,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:25:46,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:25:46,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:25:46,081 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:25:46,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:25:46,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:25:46,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:25:46,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:25:46,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:25:46,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:25:46,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:25:46,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:25:46,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:25:46,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:25:46,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:25:46,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:25:46,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:25:46,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:25:46,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:25:46,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:25:46,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:25:46,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:25:46,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:25:46,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:25:46,465 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:25:46,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 01:25:46,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb521f9ef/8fb42ab980f44347b024e4220357eb26/FLAGe0b802b92 [2020-08-22 01:25:47,154 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:25:47,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 01:25:47,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb521f9ef/8fb42ab980f44347b024e4220357eb26/FLAGe0b802b92 [2020-08-22 01:25:47,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb521f9ef/8fb42ab980f44347b024e4220357eb26 [2020-08-22 01:25:47,382 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:25:47,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:25:47,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:25:47,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:25:47,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:25:47,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:25:47" (1/1) ... [2020-08-22 01:25:47,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e528d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:47, skipping insertion in model container [2020-08-22 01:25:47,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:25:47" (1/1) ... [2020-08-22 01:25:47,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:25:47,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:25:47,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:25:47,959 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:25:48,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:25:48,105 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:25:48,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48 WrapperNode [2020-08-22 01:25:48,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:25:48,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:25:48,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:25:48,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:25:48,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (1/1) ... [2020-08-22 01:25:48,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:25:48,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:25:48,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:25:48,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:25:48,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (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 [2020-08-22 01:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:25:48,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 01:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 01:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 01:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 01:25:48,272 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 01:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 01:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 01:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 01:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 01:25:48,273 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 01:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 01:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 01:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 01:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 01:25:48,274 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 01:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 01:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 01:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 01:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 01:25:48,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 01:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 01:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 01:25:48,276 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 01:25:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 01:25:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 01:25:48,279 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 01:25:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 01:25:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 01:25:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 01:25:48,283 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 01:25:48,284 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 01:25:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 01:25:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 01:25:48,287 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 01:25:48,288 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 01:25:48,289 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 01:25:48,290 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 01:25:48,291 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 01:25:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 01:25:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:25:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 01:25:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 01:25:48,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:25:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 01:25:48,294 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 01:25:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 01:25:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:25:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:25:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:25:49,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:25:49,166 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 01:25:49,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:25:49 BoogieIcfgContainer [2020-08-22 01:25:49,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:25:49,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:25:49,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:25:49,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:25:49,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:25:47" (1/3) ... [2020-08-22 01:25:49,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e9675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:25:49, skipping insertion in model container [2020-08-22 01:25:49,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:25:48" (2/3) ... [2020-08-22 01:25:49,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796e9675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:25:49, skipping insertion in model container [2020-08-22 01:25:49,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:25:49" (3/3) ... [2020-08-22 01:25:49,181 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 01:25:49,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:25:49,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:25:49,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:25:49,262 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:25:49,263 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:25:49,263 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:25:49,263 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:25:49,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:25:49,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:25:49,264 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:25:49,264 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:25:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 01:25:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 01:25:49,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:49,298 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] [2020-08-22 01:25:49,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:49,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:49,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 01:25:49,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:49,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091573803] [2020-08-22 01:25:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:25:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 01:25:49,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091573803] [2020-08-22 01:25:49,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:25:49,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:25:49,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590167037] [2020-08-22 01:25:49,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:25:49,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:49,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:25:49,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:25:49,862 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 01:25:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:50,295 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 01:25:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 01:25:50,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 01:25:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:50,314 INFO L225 Difference]: With dead ends: 343 [2020-08-22 01:25:50,315 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 01:25:50,323 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 [2020-08-22 01:25:50,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 01:25:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 01:25:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 01:25:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 01:25:50,401 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 01:25:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:50,401 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 01:25:50,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:25:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 01:25:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:25:50,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:50,406 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] [2020-08-22 01:25:50,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:25:50,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:50,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 01:25:50,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:50,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454961518] [2020-08-22 01:25:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:25:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 01:25:50,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454961518] [2020-08-22 01:25:50,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:25:50,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 01:25:50,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276420826] [2020-08-22 01:25:50,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 01:25:50,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:50,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 01:25:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:25:50,996 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 01:25:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:52,195 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 01:25:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:25:52,196 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 01:25:52,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:52,199 INFO L225 Difference]: With dead ends: 327 [2020-08-22 01:25:52,199 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 01:25:52,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-22 01:25:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 01:25:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 01:25:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 01:25:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 01:25:52,225 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 01:25:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:52,226 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 01:25:52,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 01:25:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 01:25:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 01:25:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:52,232 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] [2020-08-22 01:25:52,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:25:52,232 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 01:25:52,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:52,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927390422] [2020-08-22 01:25:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:25:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:25:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 01:25:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:25:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 01:25:53,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927390422] [2020-08-22 01:25:53,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:25:53,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 01:25:53,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609738937] [2020-08-22 01:25:53,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 01:25:53,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:53,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 01:25:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-22 01:25:53,995 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-22 01:25:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:25:57,595 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-22 01:25:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 01:25:57,596 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-22 01:25:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:25:57,600 INFO L225 Difference]: With dead ends: 358 [2020-08-22 01:25:57,600 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 01:25:57,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 01:25:57,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 01:25:57,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-22 01:25:57,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 01:25:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 01:25:57,626 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 01:25:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:25:57,627 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 01:25:57,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 01:25:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 01:25:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 01:25:57,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:25:57,630 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] [2020-08-22 01:25:57,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:25:57,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:25:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:25:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 01:25:57,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:25:57,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626221877] [2020-08-22 01:25:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:25:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:57,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:57,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:25:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:25:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 01:25:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:25:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:25:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:25:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:25:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:25:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:25:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-22 01:25:58,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626221877] [2020-08-22 01:25:58,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:25:58,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 01:25:58,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644798494] [2020-08-22 01:25:58,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 01:25:58,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:25:58,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 01:25:58,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:25:58,797 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-22 01:26:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:00,985 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-22 01:26:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 01:26:00,985 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 01:26:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:00,988 INFO L225 Difference]: With dead ends: 375 [2020-08-22 01:26:00,988 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 01:26:00,994 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 [2020-08-22 01:26:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 01:26:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-22 01:26:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-22 01:26:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-22 01:26:01,041 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-22 01:26:01,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:01,042 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-22 01:26:01,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 01:26:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-22 01:26:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 01:26:01,045 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:01,045 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] [2020-08-22 01:26:01,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:26:01,046 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:01,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:01,046 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 01:26:01,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:01,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790943923] [2020-08-22 01:26:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:26:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:26:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:26:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 01:26:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:26:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:26:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-22 01:26:02,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790943923] [2020-08-22 01:26:02,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 01:26:02,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 01:26:02,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852745039] [2020-08-22 01:26:02,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 01:26:02,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:26:02,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 01:26:02,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 01:26:02,341 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-22 01:26:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:26:04,547 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-22 01:26:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 01:26:04,547 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 01:26:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:26:04,551 INFO L225 Difference]: With dead ends: 327 [2020-08-22 01:26:04,551 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 01:26:04,552 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 [2020-08-22 01:26:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 01:26:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-22 01:26:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 01:26:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-22 01:26:04,572 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-22 01:26:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:26:04,573 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-22 01:26:04,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 01:26:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-22 01:26:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 01:26:04,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:26:04,578 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] [2020-08-22 01:26:04,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:26:04,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:26:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:26:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 01:26:04,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:26:04,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402591676] [2020-08-22 01:26:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:26:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 01:26:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:26:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 01:26:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 01:26:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:26:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:06,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:26:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:26:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:07,802 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-22 01:26:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:26:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:26:21,870 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 257 DAG size of output: 48