/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 0.1.25-72570d3 [2020-08-22 22:14:59,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:14:59,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:14:59,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:14:59,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:14:59,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:14:59,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:14:59,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:14:59,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:14:59,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:14:59,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:14:59,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:14:59,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:14:59,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:14:59,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:14:59,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:14:59,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:14:59,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:14:59,285 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:14:59,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:14:59,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:14:59,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:14:59,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:14:59,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:14:59,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:14:59,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:14:59,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:14:59,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:14:59,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:14:59,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:14:59,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:14:59,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:14:59,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:14:59,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:14:59,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:14:59,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:14:59,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:14:59,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:14:59,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:14:59,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:14:59,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:14:59,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:14:59,339 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:14:59,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:14:59,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:14:59,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:14:59,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:14:59,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:14:59,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:14:59,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:14:59,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:14:59,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:14:59,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:14:59,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:14:59,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:14:59,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:14:59,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:14:59,345 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:14:59,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:14:59,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:14:59,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:14:59,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:14:59,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:14:59,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:14:59,348 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 [2020-08-22 22:14:59,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:14:59,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:14:59,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:14:59,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:14:59,633 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:14:59,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 22:14:59,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bda1378/38e14766c6634babb2c6bcdbd56408a6/FLAG5d03f0808 [2020-08-22 22:15:00,268 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:15:00,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 22:15:00,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bda1378/38e14766c6634babb2c6bcdbd56408a6/FLAG5d03f0808 [2020-08-22 22:15:00,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53bda1378/38e14766c6634babb2c6bcdbd56408a6 [2020-08-22 22:15:00,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:15:00,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:15:00,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:15:00,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:15:00,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:15:00,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:15:00" (1/1) ... [2020-08-22 22:15:00,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d407afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:00, skipping insertion in model container [2020-08-22 22:15:00,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:15:00" (1/1) ... [2020-08-22 22:15:00,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:15:00,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:15:01,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:15:01,063 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:15:01,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:15:01,196 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:15:01,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01 WrapperNode [2020-08-22 22:15:01,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:15:01,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:15:01,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:15:01,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:15:01,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... [2020-08-22 22:15:01,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:15:01,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:15:01,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:15:01,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:15:01,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 22:15:01,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 22:15:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 22:15:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 22:15:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 22:15:01,351 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 22:15:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 22:15:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 22:15:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 22:15:01,352 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 22:15:01,353 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 22:15:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 22:15:01,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:15:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:15:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:15:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:15:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:15:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:15:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 22:15:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:15:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:15:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:15:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:15:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:15:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:15:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:15:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:15:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:15:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:15:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:15:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:15:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 22:15:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 22:15:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 22:15:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 22:15:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:15:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:15:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:15:02,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:15:02,265 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 22:15:02,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:15:02 BoogieIcfgContainer [2020-08-22 22:15:02,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:15:02,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:15:02,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:15:02,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:15:02,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:15:00" (1/3) ... [2020-08-22 22:15:02,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efd1c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:15:02, skipping insertion in model container [2020-08-22 22:15:02,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:15:01" (2/3) ... [2020-08-22 22:15:02,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efd1c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:15:02, skipping insertion in model container [2020-08-22 22:15:02,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:15:02" (3/3) ... [2020-08-22 22:15:02,279 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 22:15:02,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:15:02,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:15:02,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:15:02,333 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:15:02,333 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:15:02,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:15:02,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:15:02,334 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:15:02,334 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:15:02,334 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:15:02,334 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:15:02,353 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-08-22 22:15:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 22:15:02,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:02,369 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] [2020-08-22 22:15:02,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:02,376 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-08-22 22:15:02,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:02,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102964415] [2020-08-22 22:15:02,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 22:15:02,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102964415] [2020-08-22 22:15:02,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:15:02,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:15:02,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697612548] [2020-08-22 22:15:02,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:15:02,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:02,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:15:02,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:15:02,961 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-08-22 22:15:03,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:03,536 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-08-22 22:15:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:15:03,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-08-22 22:15:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:03,553 INFO L225 Difference]: With dead ends: 568 [2020-08-22 22:15:03,554 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 22:15:03,561 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 [2020-08-22 22:15:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 22:15:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-08-22 22:15:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 22:15:03,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-08-22 22:15:03,641 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-08-22 22:15:03,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:03,642 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-08-22 22:15:03,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:15:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-08-22 22:15:03,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 22:15:03,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:03,651 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] [2020-08-22 22:15:03,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:15:03,651 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:03,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:03,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-08-22 22:15:03,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:03,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734572888] [2020-08-22 22:15:03,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 22:15:04,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734572888] [2020-08-22 22:15:04,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:04,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 22:15:04,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464206809] [2020-08-22 22:15:04,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:15:04,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:04,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:15:04,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:15:04,186 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-08-22 22:15:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:05,896 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-08-22 22:15:05,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:15:05,897 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-08-22 22:15:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:05,901 INFO L225 Difference]: With dead ends: 542 [2020-08-22 22:15:05,901 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 22:15:05,904 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 [2020-08-22 22:15:05,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 22:15:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-08-22 22:15:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-22 22:15:05,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-08-22 22:15:05,944 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-08-22 22:15:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:05,945 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-08-22 22:15:05,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:15:05,945 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-08-22 22:15:05,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-08-22 22:15:05,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:05,953 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] [2020-08-22 22:15:05,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:15:05,954 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:05,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-08-22 22:15:05,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:05,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809365665] [2020-08-22 22:15:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 22:15:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 137 proven. 47 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:15:08,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809365665] [2020-08-22 22:15:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:08,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 22:15:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020444515] [2020-08-22 22:15:08,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 22:15:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 22:15:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 22:15:08,918 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-08-22 22:15:15,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:15,383 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-08-22 22:15:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 22:15:15,384 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-08-22 22:15:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:15,389 INFO L225 Difference]: With dead ends: 574 [2020-08-22 22:15:15,389 INFO L226 Difference]: Without dead ends: 311 [2020-08-22 22:15:15,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 22:15:15,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-22 22:15:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-08-22 22:15:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 22:15:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-08-22 22:15:15,434 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-08-22 22:15:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:15,434 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-08-22 22:15:15,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 22:15:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-08-22 22:15:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 22:15:15,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:15,439 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] [2020-08-22 22:15:15,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:15:15,440 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:15,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:15,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-08-22 22:15:15,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:15,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785517062] [2020-08-22 22:15:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:15:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-08-22 22:15:17,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785517062] [2020-08-22 22:15:17,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:17,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-22 22:15:17,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176270827] [2020-08-22 22:15:17,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 22:15:17,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:17,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 22:15:17,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-08-22 22:15:17,501 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-08-22 22:15:19,302 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-08-22 22:15:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:23,389 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-08-22 22:15:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 22:15:23,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-08-22 22:15:23,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:23,397 INFO L225 Difference]: With dead ends: 588 [2020-08-22 22:15:23,397 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 22:15:23,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 22:15:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 22:15:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-08-22 22:15:23,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 22:15:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-08-22 22:15:23,439 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-08-22 22:15:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:23,440 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-08-22 22:15:23,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 22:15:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-08-22 22:15:23,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 22:15:23,444 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:23,444 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] [2020-08-22 22:15:23,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:15:23,445 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:23,445 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-08-22 22:15:23,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:23,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933711266] [2020-08-22 22:15:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,586 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-08-22 22:15:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:24,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 22:15:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-08-22 22:15:25,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933711266] [2020-08-22 22:15:25,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:25,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:15:25,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092731380] [2020-08-22 22:15:25,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:15:25,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:25,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:15:25,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:15:25,388 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-08-22 22:15:25,904 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-08-22 22:15:26,293 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-08-22 22:15:27,301 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-08-22 22:15:27,942 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 22:15:28,615 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-08-22 22:15:29,130 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 22:15:32,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:32,579 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-08-22 22:15:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:15:32,584 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-08-22 22:15:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:32,588 INFO L225 Difference]: With dead ends: 592 [2020-08-22 22:15:32,588 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 22:15:32,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:15:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 22:15:32,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-08-22 22:15:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 22:15:32,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-08-22 22:15:32,620 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-08-22 22:15:32,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:32,620 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-08-22 22:15:32,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:15:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-08-22 22:15:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-08-22 22:15:32,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:32,624 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] [2020-08-22 22:15:32,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:15:32,625 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:32,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-08-22 22:15:32,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:32,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129874336] [2020-08-22 22:15:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:32,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:15:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:33,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-08-22 22:15:34,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129874336] [2020-08-22 22:15:34,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:34,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 22:15:34,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490417048] [2020-08-22 22:15:34,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 22:15:34,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:34,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 22:15:34,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:15:34,470 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-08-22 22:15:38,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:38,212 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-08-22 22:15:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 22:15:38,217 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-08-22 22:15:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:38,221 INFO L225 Difference]: With dead ends: 527 [2020-08-22 22:15:38,221 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 22:15:38,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:15:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 22:15:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-08-22 22:15:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 22:15:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-08-22 22:15:38,266 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-08-22 22:15:38,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:38,267 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-08-22 22:15:38,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 22:15:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-08-22 22:15:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-08-22 22:15:38,271 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:38,271 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] [2020-08-22 22:15:38,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:15:38,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-08-22 22:15:38,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:38,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110138122] [2020-08-22 22:15:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:38,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:15:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:40,893 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-08-22 22:15:41,123 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-08-22 22:15:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:42,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:43,102 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-08-22 22:15:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:17:59,489 WARN L193 SmtUtils]: Spent 29.39 s on a formula simplification. DAG size of input: 1243 DAG size of output: 48