/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:01:16,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:01:16,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:01:16,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:01:16,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:01:16,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:01:16,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:01:16,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:01:16,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:01:16,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:01:16,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:01:16,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:01:16,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:01:16,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:01:16,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:01:16,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:01:16,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:01:16,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:01:16,964 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:01:16,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:01:16,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:01:16,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:01:16,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:01:16,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:01:16,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:01:16,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:01:16,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:01:16,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:01:16,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:01:16,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:01:16,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:01:17,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:01:17,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:01:17,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:01:17,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:01:17,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:01:17,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:01:17,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:01:17,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:01:17,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:01:17,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:01:17,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:01:17,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:01:17,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:01:17,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:01:17,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:01:17,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:01:17,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:01:17,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:01:17,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:01:17,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:01:17,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:01:17,035 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:01:17,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:01:17,035 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:01:17,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:01:17,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:01:17,038 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:01:17,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:01:17,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:01:17,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:01:17,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:01:17,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:01:17,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:01:17,039 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 22:01:17,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:01:17,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:01:17,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:01:17,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:01:17,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:01:17,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-04 22:01:17,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d7b8a47/f0dd7e5e08504b5cb83c4b0db28adffa/FLAGcd0132706 [2020-09-04 22:01:18,194 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:01:18,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-04 22:01:18,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d7b8a47/f0dd7e5e08504b5cb83c4b0db28adffa/FLAGcd0132706 [2020-09-04 22:01:18,431 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9d7b8a47/f0dd7e5e08504b5cb83c4b0db28adffa [2020-09-04 22:01:18,443 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:01:18,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:01:18,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:01:18,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:01:18,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:01:18,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:01:18" (1/1) ... [2020-09-04 22:01:18,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2210ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:18, skipping insertion in model container [2020-09-04 22:01:18,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:01:18" (1/1) ... [2020-09-04 22:01:18,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:01:18,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:01:19,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:01:19,057 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:01:19,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:01:19,196 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:01:19,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19 WrapperNode [2020-09-04 22:01:19,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:01:19,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:01:19,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:01:19,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:01:19,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (1/1) ... [2020-09-04 22:01:19,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:01:19,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:01:19,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:01:19,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:01:19,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (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 [2020-09-04 22:01:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:01:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:01:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 22:01:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 22:01:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 22:01:19,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-04 22:01:19,375 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-04 22:01:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-04 22:01:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-04 22:01:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-04 22:01:19,376 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-04 22:01:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-04 22:01:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-04 22:01:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-04 22:01:19,377 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-04 22:01:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-04 22:01:19,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:01:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:01:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:01:19,378 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:01:19,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:01:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:01:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:01:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:01:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 22:01:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 22:01:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:01:19,382 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:01:19,383 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:01:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:01:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:01:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:01:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:01:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:01:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:01:19,390 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:01:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:01:19,392 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:01:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:01:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-04 22:01:19,395 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-04 22:01:19,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 22:01:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 22:01:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 22:01:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:01:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-04 22:01:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-04 22:01:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-04 22:01:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-04 22:01:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-04 22:01:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-04 22:01:19,398 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-04 22:01:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-04 22:01:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-04 22:01:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-04 22:01:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-04 22:01:19,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:01:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:01:19,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:01:20,277 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:01:20,277 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-04 22:01:20,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:01:20 BoogieIcfgContainer [2020-09-04 22:01:20,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:01:20,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:01:20,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:01:20,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:01:20,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:01:18" (1/3) ... [2020-09-04 22:01:20,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b8857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:01:20, skipping insertion in model container [2020-09-04 22:01:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:01:19" (2/3) ... [2020-09-04 22:01:20,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b8857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:01:20, skipping insertion in model container [2020-09-04 22:01:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:01:20" (3/3) ... [2020-09-04 22:01:20,293 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-09-04 22:01:20,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:01:20,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:01:20,337 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:01:20,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:01:20,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:01:20,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:01:20,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:01:20,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:01:20,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:01:20,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:01:20,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:01:20,396 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-09-04 22:01:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 22:01:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:20,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:20,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-09-04 22:01:20,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:20,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305740868] [2020-09-04 22:01:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-04 22:01:21,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305740868] [2020-09-04 22:01:21,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:01:21,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:01:21,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614997475] [2020-09-04 22:01:21,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:01:21,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:21,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:01:21,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:01:21,122 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-09-04 22:01:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:21,721 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-09-04 22:01:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 22:01:21,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-04 22:01:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:21,741 INFO L225 Difference]: With dead ends: 568 [2020-09-04 22:01:21,741 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 22:01:21,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:01:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 22:01:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-09-04 22:01:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 22:01:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-09-04 22:01:21,844 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-09-04 22:01:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:21,845 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-09-04 22:01:21,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:01:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-09-04 22:01:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 22:01:21,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:21,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:01:21,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:01:21,851 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:21,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-09-04 22:01:21,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:21,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150832207] [2020-09-04 22:01:21,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-04 22:01:22,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150832207] [2020-09-04 22:01:22,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:22,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 22:01:22,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532125993] [2020-09-04 22:01:22,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 22:01:22,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:22,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 22:01:22,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:01:22,400 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-09-04 22:01:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:24,351 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-09-04 22:01:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 22:01:24,352 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-04 22:01:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:24,357 INFO L225 Difference]: With dead ends: 542 [2020-09-04 22:01:24,357 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 22:01:24,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-09-04 22:01:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 22:01:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-09-04 22:01:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 22:01:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-09-04 22:01:24,401 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-09-04 22:01:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:24,402 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-09-04 22:01:24,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 22:01:24,402 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-09-04 22:01:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-04 22:01:24,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:24,412 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:24,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:01:24,413 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:24,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:24,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-09-04 22:01:24,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:24,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546823723] [2020-09-04 22:01:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:24,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-04 22:01:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:26,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 137 proven. 47 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 22:01:27,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546823723] [2020-09-04 22:01:27,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:27,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 22:01:27,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992911941] [2020-09-04 22:01:27,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 22:01:27,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:27,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 22:01:27,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 22:01:27,864 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-09-04 22:01:35,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:35,833 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-09-04 22:01:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 22:01:35,834 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-09-04 22:01:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:35,839 INFO L225 Difference]: With dead ends: 574 [2020-09-04 22:01:35,839 INFO L226 Difference]: Without dead ends: 311 [2020-09-04 22:01:35,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 22:01:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-04 22:01:35,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-09-04 22:01:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-04 22:01:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-09-04 22:01:35,918 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-09-04 22:01:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:35,918 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-09-04 22:01:35,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 22:01:35,919 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-09-04 22:01:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 22:01:35,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:35,923 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:35,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:01:35,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:35,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-09-04 22:01:35,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:35,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592335933] [2020-09-04 22:01:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:01:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-09-04 22:01:38,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592335933] [2020-09-04 22:01:38,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:38,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-04 22:01:38,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308773138] [2020-09-04 22:01:38,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 22:01:38,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:38,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 22:01:38,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-09-04 22:01:38,802 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-09-04 22:01:40,722 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 22:01:40,971 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-09-04 22:01:41,180 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 22:01:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:46,044 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-09-04 22:01:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 22:01:46,045 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-09-04 22:01:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:46,050 INFO L225 Difference]: With dead ends: 588 [2020-09-04 22:01:46,051 INFO L226 Difference]: Without dead ends: 317 [2020-09-04 22:01:46,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 22:01:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-04 22:01:46,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-09-04 22:01:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 22:01:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-09-04 22:01:46,090 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-09-04 22:01:46,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:46,091 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-09-04 22:01:46,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 22:01:46,091 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-09-04 22:01:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-04 22:01:46,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:46,095 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:46,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:01:46,096 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:46,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:46,096 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-09-04 22:01:46,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:46,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261931047] [2020-09-04 22:01:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:46,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,708 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-09-04 22:01:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 22:01:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:47,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-09-04 22:01:48,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261931047] [2020-09-04 22:01:48,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:48,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 22:01:48,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428925732] [2020-09-04 22:01:48,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 22:01:48,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:48,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 22:01:48,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-04 22:01:48,402 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-09-04 22:01:48,841 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-04 22:01:49,266 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-04 22:01:50,443 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-04 22:01:51,204 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 22:01:51,997 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-04 22:01:52,630 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 22:01:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:56,933 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-09-04 22:01:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 22:01:56,934 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-09-04 22:01:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:56,937 INFO L225 Difference]: With dead ends: 592 [2020-09-04 22:01:56,937 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 22:01:56,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 22:01:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 22:01:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-09-04 22:01:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 22:01:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-09-04 22:01:56,972 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-09-04 22:01:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:56,973 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-09-04 22:01:56,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 22:01:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-09-04 22:01:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-04 22:01:56,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:56,977 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:56,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:01:56,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:56,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-09-04 22:01:56,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:56,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960322542] [2020-09-04 22:01:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:01:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-09-04 22:01:59,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960322542] [2020-09-04 22:01:59,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:59,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-04 22:01:59,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392684122] [2020-09-04 22:01:59,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 22:01:59,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:59,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 22:01:59,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-09-04 22:01:59,025 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-09-04 22:02:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:02:03,695 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-09-04 22:02:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 22:02:03,696 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-09-04 22:02:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:02:03,700 INFO L225 Difference]: With dead ends: 527 [2020-09-04 22:02:03,701 INFO L226 Difference]: Without dead ends: 417 [2020-09-04 22:02:03,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 22:02:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-04 22:02:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-09-04 22:02:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-04 22:02:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-09-04 22:02:03,738 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-09-04 22:02:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:02:03,739 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-09-04 22:02:03,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 22:02:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-09-04 22:02:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-04 22:02:03,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:02:03,743 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2020-09-04 22:02:03,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:02:03,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:02:03,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:02:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-09-04 22:02:03,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:02:03,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009658512] [2020-09-04 22:02:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:02:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:02:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:04,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:02:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:02:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:02:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:02:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:02:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:02:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:02:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:05,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:02:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:06,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:02:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:07,024 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-09-04 22:02:07,304 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-09-04 22:02:07,586 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-09-04 22:02:07,819 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-09-04 22:02:08,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:02:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:02:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:02:10,008 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-04 22:02:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:02:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:06:34,982 WARN L193 SmtUtils]: Spent 28.13 s on a formula simplification. DAG size of input: 1243 DAG size of output: 48