/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -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 01:58:12,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:58:12,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:58:12,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:58:12,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:58:12,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:58:12,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:58:12,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:58:12,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:58:12,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:58:12,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:58:12,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:58:12,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:58:12,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:58:12,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:58:12,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:58:12,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:58:12,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:58:12,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:58:12,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:58:12,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:58:12,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:58:12,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:58:12,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:58:12,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:58:12,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:58:12,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:58:12,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:58:12,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:58:12,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:58:12,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:58:12,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:58:12,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:58:12,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:58:12,532 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:58:12,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:58:12,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:58:12,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:58:12,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:58:12,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:58:12,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:58:12,535 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 01:58:12,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:58:12,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:58:12,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:58:12,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:58:12,558 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:58:12,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:58:12,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:58:12,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:58:12,559 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:58:12,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:58:12,560 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:58:12,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:58:12,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:58:12,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:58:12,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:58:12,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:58:12,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:58:12,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:58:12,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:58:12,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:58:12,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:58:12,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:58:12,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:58:12,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:58:12,563 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:58:12,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:58:12,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:58:12,883 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:58:12,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:58:12,885 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:58:12,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 01:58:12,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09c41c81/7e93b4acef6f44838e5edc6b44e8ba1f/FLAG7230aef53 [2020-08-19 01:58:13,585 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:58:13,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 01:58:13,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09c41c81/7e93b4acef6f44838e5edc6b44e8ba1f/FLAG7230aef53 [2020-08-19 01:58:13,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a09c41c81/7e93b4acef6f44838e5edc6b44e8ba1f [2020-08-19 01:58:13,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:58:13,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:58:13,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:13,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:58:13,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:58:13,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:13" (1/1) ... [2020-08-19 01:58:13,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d407afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:13, skipping insertion in model container [2020-08-19 01:58:13,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:58:13" (1/1) ... [2020-08-19 01:58:13,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:58:13,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:58:14,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:14,367 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:58:14,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:58:14,486 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:58:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14 WrapperNode [2020-08-19 01:58:14,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:58:14,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:58:14,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:58:14,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:58:14,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (1/1) ... [2020-08-19 01:58:14,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:58:14,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:58:14,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:58:14,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:58:14,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (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 01:58:14,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:58:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:58:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:58:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 01:58:14,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 01:58:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 01:58:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 01:58:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 01:58:14,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 01:58:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 01:58:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 01:58:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 01:58:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 01:58:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 01:58:14,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 01:58:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 01:58:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 01:58:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 01:58:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 01:58:14,654 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 01:58:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 01:58:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:58:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:58:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 01:58:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 01:58:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 01:58:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 01:58:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 01:58:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 01:58:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 01:58:14,659 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 01:58:14,660 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 01:58:14,661 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 01:58:14,662 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 01:58:14,663 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 01:58:14,664 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:58:14,665 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 01:58:14,666 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 01:58:14,667 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 01:58:14,668 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 01:58:14,669 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 01:58:14,670 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 01:58:14,671 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 01:58:14,672 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 01:58:14,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 01:58:14,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 01:58:14,675 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 01:58:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 01:58:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 01:58:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:58:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:58:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:58:15,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:58:15,603 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 01:58:15,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:15 BoogieIcfgContainer [2020-08-19 01:58:15,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:58:15,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:58:15,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:58:15,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:58:15,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:58:13" (1/3) ... [2020-08-19 01:58:15,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36037b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:15, skipping insertion in model container [2020-08-19 01:58:15,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:58:14" (2/3) ... [2020-08-19 01:58:15,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36037b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:58:15, skipping insertion in model container [2020-08-19 01:58:15,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:58:15" (3/3) ... [2020-08-19 01:58:15,617 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 01:58:15,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:58:15,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:58:15,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:58:15,677 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:58:15,678 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:58:15,678 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:58:15,678 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:58:15,678 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:58:15,678 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:58:15,679 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:58:15,679 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:58:15,703 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 01:58:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:58:15,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:15,715 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 01:58:15,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 01:58:15,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:15,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686872534] [2020-08-19 01:58:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:16,250 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 01:58:16,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686872534] [2020-08-19 01:58:16,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:58:16,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:58:16,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418780448] [2020-08-19 01:58:16,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:58:16,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:16,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:58:16,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:58:16,280 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 01:58:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:16,776 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 01:58:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:58:16,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:58:16,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:16,794 INFO L225 Difference]: With dead ends: 343 [2020-08-19 01:58:16,794 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:58:16,802 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 01:58:16,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:58:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 01:58:16,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 01:58:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 01:58:16,874 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 01:58:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:16,875 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 01:58:16,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:58:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 01:58:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:58:16,879 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:16,879 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 01:58:16,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:58:16,880 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:16,880 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 01:58:16,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:16,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205289976] [2020-08-19 01:58:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:17,312 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 01:58:17,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205289976] [2020-08-19 01:58:17,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:58:17,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:58:17,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97541474] [2020-08-19 01:58:17,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:58:17,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:17,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:58:17,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:58:17,326 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 01:58:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:18,499 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 01:58:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:58:18,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 01:58:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:18,503 INFO L225 Difference]: With dead ends: 327 [2020-08-19 01:58:18,504 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:58:18,506 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 01:58:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:58:18,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 01:58:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 01:58:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 01:58:18,530 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 01:58:18,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:18,531 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 01:58:18,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:58:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 01:58:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:58:18,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:18,537 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 01:58:18,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:58:18,538 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:18,538 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 01:58:18,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:18,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342200487] [2020-08-19 01:58:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:18,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:58:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:20,350 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 01:58:20,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342200487] [2020-08-19 01:58:20,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:58:20,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 01:58:20,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916200204] [2020-08-19 01:58:20,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 01:58:20,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:20,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 01:58:20,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:58:20,356 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 01:58:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:23,476 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 01:58:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:58:23,476 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 01:58:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:23,480 INFO L225 Difference]: With dead ends: 348 [2020-08-19 01:58:23,481 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 01:58:23,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:58:23,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 01:58:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 01:58:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 01:58:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 01:58:23,505 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 01:58:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:23,506 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 01:58:23,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 01:58:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 01:58:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:58:23,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:23,509 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 01:58:23,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:58:23,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:23,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:23,510 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 01:58:23,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:23,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546927677] [2020-08-19 01:58:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:23,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:23,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:58:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:24,660 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 01:58:24,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546927677] [2020-08-19 01:58:24,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:58:24,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:58:24,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917971397] [2020-08-19 01:58:24,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:58:24,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:58:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:58:24,665 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 01:58:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:26,935 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 01:58:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:58:26,937 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 01:58:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:26,939 INFO L225 Difference]: With dead ends: 360 [2020-08-19 01:58:26,939 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 01:58:26,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:58:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 01:58:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 01:58:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 01:58:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 01:58:26,963 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 01:58:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:26,964 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 01:58:26,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:58:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 01:58:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:58:26,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:26,968 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 01:58:26,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:58:26,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:26,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 01:58:26,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:26,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749602932] [2020-08-19 01:58:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:58:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:27,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:28,300 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 01:58:28,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749602932] [2020-08-19 01:58:28,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:58:28,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 01:58:28,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422161096] [2020-08-19 01:58:28,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 01:58:28,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 01:58:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:58:28,302 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 01:58:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:31,111 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 01:58:31,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:58:31,111 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 01:58:31,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:31,115 INFO L225 Difference]: With dead ends: 371 [2020-08-19 01:58:31,115 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 01:58:31,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:58:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 01:58:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 01:58:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 01:58:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 01:58:31,141 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 01:58:31,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:31,142 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 01:58:31,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 01:58:31,142 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 01:58:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:58:31,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:31,145 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 01:58:31,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:58:31,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 01:58:31,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:31,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979445328] [2020-08-19 01:58:31,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:58:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:31,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:32,362 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 01:58:32,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979445328] [2020-08-19 01:58:32,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:58:32,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 01:58:32,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569880527] [2020-08-19 01:58:32,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 01:58:32,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:58:32,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 01:58:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:58:32,365 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 01:58:34,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:58:34,561 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 01:58:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:58:34,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 01:58:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:58:34,566 INFO L225 Difference]: With dead ends: 323 [2020-08-19 01:58:34,566 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 01:58:34,567 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 01:58:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 01:58:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 01:58:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 01:58:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 01:58:34,589 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 01:58:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:58:34,590 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 01:58:34,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 01:58:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 01:58:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 01:58:34,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:58:34,593 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 01:58:34,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:58:34,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:58:34,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:58:34,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 01:58:34,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:58:34,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794638116] [2020-08-19 01:58:34,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:58:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:34,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:58:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:35,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:35,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:35,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:36,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:36,868 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 01:58:37,666 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 01:58:37,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:58:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:38,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:58:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:58:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:58:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:58:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:58:40,562 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 01:58:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:58:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:59:09,202 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 449 DAG size of output: 50