/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:19:31,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:19:31,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:19:31,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:19:31,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:19:31,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:19:31,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:19:31,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:19:31,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:19:31,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:19:31,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:19:31,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:19:31,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:19:31,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:19:31,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:19:31,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:19:31,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:19:31,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:19:31,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:19:31,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:19:31,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:19:31,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:19:31,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:19:31,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:19:31,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:19:31,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:19:31,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:19:31,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:19:31,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:19:31,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:19:31,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:19:31,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:19:31,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:19:31,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:19:31,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:19:31,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:19:31,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:19:31,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:19:31,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:19:31,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:19:31,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:19:31,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:19:31,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:19:31,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:19:31,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:19:31,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:19:31,407 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:19:31,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:19:31,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:19:31,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:19:31,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:19:31,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:19:31,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:19:31,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:19:31,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:19:31,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:19:31,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:19:31,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:19:31,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:19:31,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:19:31,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:19:31,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:19:31,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:19:31,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:19:31,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:19:31,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:19:31,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:19:31,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:19:31,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:19:31,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:19:31,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:19:31,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:19:31,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:19:31,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:19:31,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:19:31,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:19:31,700 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:19:31,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 13:19:31,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d74733a/2af4301495bc4f4faa78e98106156b87/FLAGb66c4ac61 [2020-08-21 13:19:32,380 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:19:32,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 13:19:32,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d74733a/2af4301495bc4f4faa78e98106156b87/FLAGb66c4ac61 [2020-08-21 13:19:32,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79d74733a/2af4301495bc4f4faa78e98106156b87 [2020-08-21 13:19:32,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:19:32,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:19:32,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:32,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:19:32,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:19:32,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:32" (1/1) ... [2020-08-21 13:19:32,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa96a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:32, skipping insertion in model container [2020-08-21 13:19:32,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:19:32" (1/1) ... [2020-08-21 13:19:32,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:19:32,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:19:33,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:33,188 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:19:33,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:19:33,325 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:19:33,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33 WrapperNode [2020-08-21 13:19:33,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:19:33,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:19:33,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:19:33,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:19:33,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... [2020-08-21 13:19:33,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:19:33,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:19:33,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:19:33,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:19:33,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:19:33,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:19:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:19:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 13:19:33,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 13:19:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 13:19:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 13:19:33,500 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 13:19:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 13:19:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 13:19:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 13:19:33,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 13:19:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 13:19:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 13:19:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 13:19:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 13:19:33,502 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 13:19:33,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:19:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:19:33,503 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 13:19:33,504 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 13:19:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 13:19:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 13:19:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 13:19:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 13:19:33,505 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 13:19:33,506 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 13:19:33,507 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 13:19:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 13:19:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 13:19:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 13:19:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 13:19:33,508 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 13:19:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 13:19:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 13:19:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 13:19:33,509 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 13:19:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 13:19:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 13:19:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 13:19:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 13:19:33,510 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 13:19:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 13:19:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 13:19:33,511 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 13:19:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 13:19:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 13:19:33,512 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 13:19:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 13:19:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 13:19:33,513 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:19:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 13:19:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 13:19:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:19:33,514 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 13:19:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 13:19:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 13:19:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 13:19:33,515 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 13:19:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:19:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 13:19:33,516 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 13:19:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 13:19:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 13:19:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 13:19:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 13:19:33,517 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 13:19:33,518 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 13:19:33,519 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 13:19:33,520 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 13:19:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 13:19:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 13:19:33,521 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 13:19:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 13:19:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 13:19:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 13:19:33,522 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 13:19:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 13:19:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 13:19:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 13:19:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 13:19:33,523 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 13:19:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 13:19:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 13:19:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:19:33,524 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 13:19:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 13:19:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:19:33,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:19:33,526 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 13:19:33,529 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 13:19:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:19:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 13:19:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:19:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 13:19:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 13:19:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:19:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 13:19:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 13:19:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 13:19:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 13:19:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 13:19:33,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:19:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:19:33,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:19:34,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:19:34,360 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 13:19:34,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:34 BoogieIcfgContainer [2020-08-21 13:19:34,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:19:34,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:19:34,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:19:34,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:19:34,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:19:32" (1/3) ... [2020-08-21 13:19:34,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390c965a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:34, skipping insertion in model container [2020-08-21 13:19:34,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:19:33" (2/3) ... [2020-08-21 13:19:34,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390c965a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:19:34, skipping insertion in model container [2020-08-21 13:19:34,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:19:34" (3/3) ... [2020-08-21 13:19:34,379 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 13:19:34,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:19:34,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:19:34,416 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:19:34,449 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:19:34,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:19:34,450 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:19:34,450 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:19:34,450 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:19:34,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:19:34,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:19:34,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:19:34,470 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 13:19:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 13:19:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:34,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:34,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:34,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 13:19:34,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:34,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714654051] [2020-08-21 13:19:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 13:19:34,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714654051] [2020-08-21 13:19:34,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:19:34,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:19:34,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520051664] [2020-08-21 13:19:34,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:19:34,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:34,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:19:34,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:19:34,960 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 13:19:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:35,391 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 13:19:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:19:35,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 13:19:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:35,407 INFO L225 Difference]: With dead ends: 343 [2020-08-21 13:19:35,407 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 13:19:35,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:19:35,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 13:19:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 13:19:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 13:19:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 13:19:35,484 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 13:19:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:35,484 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 13:19:35,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:19:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 13:19:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:19:35,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:35,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:35,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:19:35,492 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:35,495 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 13:19:35,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:35,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965539440] [2020-08-21 13:19:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:35,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:35,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:36,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:36,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:36,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 13:19:36,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965539440] [2020-08-21 13:19:36,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:36,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:19:36,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733040054] [2020-08-21 13:19:36,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:19:36,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:36,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:19:36,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:19:36,054 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 13:19:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:37,178 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 13:19:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:19:37,179 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 13:19:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:37,184 INFO L225 Difference]: With dead ends: 327 [2020-08-21 13:19:37,184 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 13:19:37,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-21 13:19:37,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 13:19:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 13:19:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 13:19:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 13:19:37,208 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 13:19:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:37,209 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 13:19:37,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:19:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 13:19:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:19:37,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:37,213 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:37,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:19:37,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:37,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:37,214 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 13:19:37,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:37,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120179020] [2020-08-21 13:19:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:37,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:19:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 13:19:38,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120179020] [2020-08-21 13:19:38,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:38,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 13:19:38,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752323998] [2020-08-21 13:19:38,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 13:19:38,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:38,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 13:19:38,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 13:19:38,915 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 13:19:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:42,591 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 13:19:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 13:19:42,592 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 13:19:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:42,597 INFO L225 Difference]: With dead ends: 358 [2020-08-21 13:19:42,597 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 13:19:42,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 13:19:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 13:19:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 13:19:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 13:19:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 13:19:42,647 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 13:19:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:42,648 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 13:19:42,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 13:19:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 13:19:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:19:42,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:42,652 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:42,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:19:42,652 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 13:19:42,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:42,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948905115] [2020-08-21 13:19:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:42,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:19:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 13:19:43,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948905115] [2020-08-21 13:19:43,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:43,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 13:19:43,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928046322] [2020-08-21 13:19:43,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 13:19:43,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:43,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 13:19:43,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:19:43,878 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 13:19:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:46,083 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 13:19:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:19:46,084 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 13:19:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:46,089 INFO L225 Difference]: With dead ends: 375 [2020-08-21 13:19:46,090 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 13:19:46,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-21 13:19:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 13:19:46,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 13:19:46,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 13:19:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 13:19:46,137 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 13:19:46,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:46,138 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 13:19:46,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 13:19:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 13:19:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:19:46,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:46,142 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:46,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:19:46,142 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:46,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 13:19:46,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:46,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488550470] [2020-08-21 13:19:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:19:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 13:19:47,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488550470] [2020-08-21 13:19:47,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:19:47,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 13:19:47,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462752074] [2020-08-21 13:19:47,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 13:19:47,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:19:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 13:19:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:19:47,439 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 13:19:49,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:19:49,652 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 13:19:49,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 13:19:49,653 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 13:19:49,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:19:49,659 INFO L225 Difference]: With dead ends: 327 [2020-08-21 13:19:49,659 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 13:19:49,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 13:19:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 13:19:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 13:19:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 13:19:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 13:19:49,702 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 13:19:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:19:49,703 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 13:19:49,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 13:19:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 13:19:49,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 13:19:49,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:19:49,715 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:19:49,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:19:49,715 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:19:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:19:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 13:19:49,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:19:49,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383638078] [2020-08-21 13:19:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:19:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 13:19:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 13:19:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 13:19:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:19:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:19:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:19:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:19:52,552 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 13:19:52,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:19:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:05,667 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 257 DAG size of output: 48