/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:12:11,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:12:11,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:12:11,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:12:11,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:12:11,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:12:11,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:12:11,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:12:11,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:12:11,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:12:11,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:12:11,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:12:11,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:12:11,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:12:11,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:12:11,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:12:11,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:12:11,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:12:11,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:12:11,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:12:11,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:12:11,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:12:11,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:12:11,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:12:11,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:12:11,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:12:11,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:12:11,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:12:11,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:12:11,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:12:11,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:12:11,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:12:11,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:12:11,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:12:11,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:12:11,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:12:11,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:12:11,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:12:11,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:12:11,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:12:11,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:12:11,476 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 [2020-08-19 05:12:11,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:12:11,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:12:11,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:12:11,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:12:11,518 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:12:11,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:12:11,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:12:11,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:12:11,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:12:11,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:12:11,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:12:11,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:12:11,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:12:11,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:12:11,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:12:11,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:12:11,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:12:11,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:12:11,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:12:11,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:12:11,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:12:11,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:12:11,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:12:11,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:12:11,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:12:11,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:12:11,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:12:11,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:12:11,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:12:11,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:12:11,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:12:11,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:12:11,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:12:11,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:12:11,880 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:12:11,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 05:12:11,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc310616f/df813dbbbff74eb4bcb0682b7b35e178/FLAG6d4bc0ace [2020-08-19 05:12:12,461 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:12:12,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 05:12:12,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc310616f/df813dbbbff74eb4bcb0682b7b35e178/FLAG6d4bc0ace [2020-08-19 05:12:12,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc310616f/df813dbbbff74eb4bcb0682b7b35e178 [2020-08-19 05:12:12,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:12:12,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:12:12,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:12:12,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:12:12,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:12:12,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:12:12" (1/1) ... [2020-08-19 05:12:12,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7ba8b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:12, skipping insertion in model container [2020-08-19 05:12:12,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:12:12" (1/1) ... [2020-08-19 05:12:12,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:12:12,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:12:13,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:12:13,356 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:12:13,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:12:13,475 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:12:13,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13 WrapperNode [2020-08-19 05:12:13,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:12:13,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:12:13,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:12:13,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:12:13,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (1/1) ... [2020-08-19 05:12:13,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:12:13,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:12:13,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:12:13,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:12:13,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (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 [2020-08-19 05:12:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:12:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:12:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 05:12:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 05:12:13,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 05:12:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 05:12:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 05:12:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 05:12:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 05:12:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 05:12:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:12:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:12:13,631 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 05:12:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 05:12:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 05:12:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 05:12:13,635 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 05:12:13,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 05:12:13,637 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 05:12:13,638 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:12:13,639 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 05:12:13,640 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 05:12:13,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 05:12:13,642 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 05:12:13,643 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 05:12:13,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 05:12:13,645 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 05:12:13,646 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 05:12:13,647 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:12:13,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 05:12:13,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 05:12:13,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 05:12:13,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:12:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:12:13,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:12:14,547 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:12:14,548 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 05:12:14,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:12:14 BoogieIcfgContainer [2020-08-19 05:12:14,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:12:14,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:12:14,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:12:14,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:12:14,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:12:12" (1/3) ... [2020-08-19 05:12:14,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cbf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:12:14, skipping insertion in model container [2020-08-19 05:12:14,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:12:13" (2/3) ... [2020-08-19 05:12:14,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cbf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:12:14, skipping insertion in model container [2020-08-19 05:12:14,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:12:14" (3/3) ... [2020-08-19 05:12:14,566 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 05:12:14,577 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:12:14,587 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:12:14,602 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:12:14,630 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:12:14,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:12:14,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:12:14,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:12:14,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:12:14,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:12:14,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:12:14,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:12:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 05:12:14,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 05:12:14,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:14,664 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] [2020-08-19 05:12:14,664 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:14,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:14,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 05:12:14,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:14,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516626480] [2020-08-19 05:12:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 05:12:15,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516626480] [2020-08-19 05:12:15,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:12:15,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:12:15,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763100261] [2020-08-19 05:12:15,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:12:15,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:15,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:12:15,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:12:15,237 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 05:12:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:15,685 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 05:12:15,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:12:15,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 05:12:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:15,701 INFO L225 Difference]: With dead ends: 343 [2020-08-19 05:12:15,702 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 05:12:15,709 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 [2020-08-19 05:12:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 05:12:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 05:12:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 05:12:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 05:12:15,786 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 05:12:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:15,786 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 05:12:15,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:12:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 05:12:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 05:12:15,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:15,794 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] [2020-08-19 05:12:15,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:12:15,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:15,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 05:12:15,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:15,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605984620] [2020-08-19 05:12:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:15,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 05:12:16,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605984620] [2020-08-19 05:12:16,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:12:16,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:12:16,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672770235] [2020-08-19 05:12:16,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:12:16,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:16,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:12:16,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:12:16,386 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 05:12:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:17,519 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 05:12:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:12:17,520 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 05:12:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:17,523 INFO L225 Difference]: With dead ends: 327 [2020-08-19 05:12:17,523 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 05:12:17,525 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 [2020-08-19 05:12:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 05:12:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 05:12:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 05:12:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 05:12:17,549 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 05:12:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:17,549 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 05:12:17,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:12:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 05:12:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 05:12:17,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:17,553 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] [2020-08-19 05:12:17,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:12:17,554 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:17,554 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 05:12:17,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:17,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314439693] [2020-08-19 05:12:17,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:12:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:18,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 05:12:19,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314439693] [2020-08-19 05:12:19,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:12:19,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 05:12:19,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430318542] [2020-08-19 05:12:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 05:12:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 05:12:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:12:19,148 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 05:12:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:22,410 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 05:12:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 05:12:22,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 05:12:22,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:22,418 INFO L225 Difference]: With dead ends: 348 [2020-08-19 05:12:22,418 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 05:12:22,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 05:12:22,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 05:12:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 05:12:22,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 05:12:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 05:12:22,469 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 05:12:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:22,469 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 05:12:22,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 05:12:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 05:12:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 05:12:22,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:22,472 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] [2020-08-19 05:12:22,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:12:22,472 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:22,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 05:12:22,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:22,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366470742] [2020-08-19 05:12:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:22,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:22,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:12:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-19 05:12:23,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366470742] [2020-08-19 05:12:23,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:12:23,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:12:23,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379384268] [2020-08-19 05:12:23,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:12:23,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:23,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:12:23,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:12:23,618 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 05:12:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:25,678 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 05:12:25,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:12:25,679 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 05:12:25,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:25,686 INFO L225 Difference]: With dead ends: 360 [2020-08-19 05:12:25,686 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 05:12:25,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 05:12:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 05:12:25,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 05:12:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 05:12:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 05:12:25,726 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 05:12:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:25,727 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 05:12:25,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 05:12:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 05:12:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 05:12:25,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:25,730 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] [2020-08-19 05:12:25,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:12:25,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:25,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:25,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 05:12:25,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:25,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273841493] [2020-08-19 05:12:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:25,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:25,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:12:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:26,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-19 05:12:27,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273841493] [2020-08-19 05:12:27,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:12:27,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 05:12:27,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413049648] [2020-08-19 05:12:27,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 05:12:27,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:27,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 05:12:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:12:27,533 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 05:12:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:30,250 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 05:12:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 05:12:30,251 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 05:12:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:30,256 INFO L225 Difference]: With dead ends: 371 [2020-08-19 05:12:30,256 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 05:12:30,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 05:12:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 05:12:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 05:12:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 05:12:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 05:12:30,283 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 05:12:30,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:30,284 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 05:12:30,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 05:12:30,284 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 05:12:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 05:12:30,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:30,296 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] [2020-08-19 05:12:30,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:12:30,297 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:30,297 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 05:12:30,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:30,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545799801] [2020-08-19 05:12:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:30,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:12:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-19 05:12:31,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545799801] [2020-08-19 05:12:31,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:12:31,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 05:12:31,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193850822] [2020-08-19 05:12:31,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 05:12:31,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:12:31,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 05:12:31,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:12:31,515 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 05:12:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:12:33,714 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 05:12:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 05:12:33,715 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 05:12:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:12:33,719 INFO L225 Difference]: With dead ends: 323 [2020-08-19 05:12:33,719 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 05:12:33,721 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 [2020-08-19 05:12:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 05:12:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 05:12:33,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 05:12:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 05:12:33,739 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 05:12:33,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:12:33,740 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 05:12:33,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 05:12:33,740 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 05:12:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 05:12:33,745 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:12:33,747 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] [2020-08-19 05:12:33,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:12:33,748 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:12:33,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:12:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 05:12:33,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:12:33,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479679874] [2020-08-19 05:12:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:12:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 05:12:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:35,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:35,947 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 05:12:36,840 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 05:12:37,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:37,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 05:12:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:37,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:38,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 05:12:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:12:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:38,822 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-08-19 05:12:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:12:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:12:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:12:39,821 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 05:12:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:12:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:07,261 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 449 DAG size of output: 50