/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:36:36,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:36:36,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:36:36,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:36:36,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:36:36,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:36:36,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:36:36,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:36:36,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:36:36,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:36:36,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:36:36,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:36:36,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:36:36,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:36:36,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:36:36,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:36:36,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:36:36,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:36:36,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:36:36,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:36:36,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:36:36,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:36:36,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:36:36,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:36:36,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:36:36,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:36:36,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:36:36,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:36:36,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:36:36,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:36:36,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:36:36,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:36:36,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:36:36,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:36:36,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:36:36,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:36:36,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:36:36,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:36:36,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:36:36,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:36:36,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:36:36,407 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 [2020-08-22 00:36:36,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:36:36,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:36:36,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:36:36,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:36:36,433 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:36:36,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:36:36,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:36:36,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:36:36,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:36:36,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:36:36,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:36:36,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:36:36,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:36:36,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:36:36,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:36:36,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:36:36,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:36:36,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:36:36,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:36:36,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:36:36,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:36:36,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:36:36,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:36:36,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:36:36,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:36:36,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:36:36,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:36:36,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:36:36,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:36:36,438 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:36:36,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:36:36,784 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:36:36,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:36:36,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:36:36,789 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:36:36,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 00:36:36,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e48aecf27/e44191f3b60a4f5c8dd40351351bf665/FLAGdd952ff73 [2020-08-22 00:36:37,438 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:36:37,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 00:36:37,455 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e48aecf27/e44191f3b60a4f5c8dd40351351bf665/FLAGdd952ff73 [2020-08-22 00:36:37,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e48aecf27/e44191f3b60a4f5c8dd40351351bf665 [2020-08-22 00:36:37,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:36:37,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:36:37,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:36:37,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:36:37,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:36:37,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:36:37" (1/1) ... [2020-08-22 00:36:37,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5a1d6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:37, skipping insertion in model container [2020-08-22 00:36:37,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:36:37" (1/1) ... [2020-08-22 00:36:37,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:36:37,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:36:38,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:36:38,290 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:36:38,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:36:38,424 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:36:38,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38 WrapperNode [2020-08-22 00:36:38,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:36:38,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:36:38,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:36:38,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:36:38,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (1/1) ... [2020-08-22 00:36:38,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:36:38,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:36:38,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:36:38,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:36:38,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (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 [2020-08-22 00:36:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:36:38,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:36:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 00:36:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 00:36:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 00:36:38,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 00:36:38,621 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 00:36:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 00:36:38,622 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 00:36:38,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 00:36:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 00:36:38,624 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 00:36:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 00:36:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 00:36:38,625 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 00:36:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 00:36:38,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:36:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:36:38,626 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 00:36:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 00:36:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 00:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 00:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 00:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 00:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 00:36:38,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 00:36:38,631 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 00:36:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 00:36:38,632 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 00:36:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 00:36:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 00:36:38,633 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 00:36:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 00:36:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 00:36:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 00:36:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 00:36:38,634 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 00:36:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 00:36:38,635 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 00:36:38,636 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 00:36:38,637 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 00:36:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 00:36:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 00:36:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 00:36:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 00:36:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 00:36:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 00:36:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 00:36:38,640 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 00:36:38,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 00:36:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 00:36:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 00:36:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 00:36:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 00:36:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 00:36:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 00:36:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 00:36:38,646 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 00:36:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 00:36:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 00:36:38,647 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 00:36:38,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:36:38,649 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 00:36:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 00:36:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:36:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:36:38,653 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 00:36:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 00:36:38,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:36:38,655 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 00:36:38,664 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 00:36:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 00:36:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 00:36:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 00:36:38,672 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 00:36:38,673 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:36:38,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:36:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:36:39,546 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:36:39,547 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 00:36:39,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:36:39 BoogieIcfgContainer [2020-08-22 00:36:39,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:36:39,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:36:39,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:36:39,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:36:39,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:36:37" (1/3) ... [2020-08-22 00:36:39,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af9c03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:36:39, skipping insertion in model container [2020-08-22 00:36:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:36:38" (2/3) ... [2020-08-22 00:36:39,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af9c03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:36:39, skipping insertion in model container [2020-08-22 00:36:39,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:36:39" (3/3) ... [2020-08-22 00:36:39,561 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 00:36:39,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:36:39,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:36:39,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:36:39,618 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:36:39,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:36:39,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:36:39,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:36:39,619 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:36:39,619 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:36:39,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:36:39,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:36:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 00:36:39,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 00:36:39,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:39,655 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] [2020-08-22 00:36:39,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:39,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 00:36:39,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:39,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348027520] [2020-08-22 00:36:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:39,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:39,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:39,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 00:36:40,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348027520] [2020-08-22 00:36:40,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:36:40,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:36:40,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2247292] [2020-08-22 00:36:40,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:36:40,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:40,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:36:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:36:40,185 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 00:36:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:40,698 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 00:36:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 00:36:40,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 00:36:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:40,731 INFO L225 Difference]: With dead ends: 343 [2020-08-22 00:36:40,731 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 00:36:40,745 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 [2020-08-22 00:36:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 00:36:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 00:36:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 00:36:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 00:36:40,889 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 00:36:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:40,890 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 00:36:40,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:36:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 00:36:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 00:36:40,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:40,897 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] [2020-08-22 00:36:40,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:36:40,898 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:40,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:40,899 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 00:36:40,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:40,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076458547] [2020-08-22 00:36:40,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 00:36:41,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076458547] [2020-08-22 00:36:41,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:41,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 00:36:41,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227110023] [2020-08-22 00:36:41,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 00:36:41,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:41,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 00:36:41,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 00:36:41,447 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 00:36:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:42,801 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 00:36:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 00:36:42,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 00:36:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:42,805 INFO L225 Difference]: With dead ends: 327 [2020-08-22 00:36:42,805 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 00:36:42,807 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 [2020-08-22 00:36:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 00:36:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 00:36:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 00:36:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 00:36:42,833 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 00:36:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:42,833 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 00:36:42,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 00:36:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 00:36:42,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 00:36:42,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:42,837 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] [2020-08-22 00:36:42,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:36:42,838 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:42,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:42,838 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 00:36:42,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:42,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061982385] [2020-08-22 00:36:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 00:36:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-22 00:36:44,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061982385] [2020-08-22 00:36:44,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:44,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 00:36:44,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035476360] [2020-08-22 00:36:44,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 00:36:44,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 00:36:44,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-22 00:36:44,992 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-22 00:36:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:48,617 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-22 00:36:48,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 00:36:48,617 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-22 00:36:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:48,620 INFO L225 Difference]: With dead ends: 358 [2020-08-22 00:36:48,621 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 00:36:48,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 00:36:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 00:36:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-22 00:36:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 00:36:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 00:36:48,675 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 00:36:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:48,678 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 00:36:48,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 00:36:48,678 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 00:36:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 00:36:48,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:48,684 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] [2020-08-22 00:36:48,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:36:48,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 00:36:48,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:48,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907573968] [2020-08-22 00:36:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:48,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 00:36:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-22 00:36:49,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907573968] [2020-08-22 00:36:49,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:49,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 00:36:49,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734471612] [2020-08-22 00:36:49,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 00:36:49,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 00:36:49,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 00:36:49,860 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-22 00:36:50,454 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2020-08-22 00:36:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:52,127 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-22 00:36:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 00:36:52,129 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 00:36:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:52,133 INFO L225 Difference]: With dead ends: 375 [2020-08-22 00:36:52,133 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 00:36:52,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-22 00:36:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 00:36:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-22 00:36:52,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-22 00:36:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-22 00:36:52,154 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-22 00:36:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:52,155 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-22 00:36:52,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 00:36:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-22 00:36:52,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 00:36:52,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:52,158 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] [2020-08-22 00:36:52,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:36:52,159 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:52,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:52,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 00:36:52,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:52,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513330398] [2020-08-22 00:36:52,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:52,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 00:36:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:53,909 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-22 00:36:53,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513330398] [2020-08-22 00:36:53,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 00:36:53,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 00:36:53,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932483001] [2020-08-22 00:36:53,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 00:36:53,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:36:53,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 00:36:53,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 00:36:53,913 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-22 00:36:56,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:36:56,136 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-22 00:36:56,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 00:36:56,136 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 00:36:56,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:36:56,141 INFO L225 Difference]: With dead ends: 327 [2020-08-22 00:36:56,141 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 00:36:56,142 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 [2020-08-22 00:36:56,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 00:36:56,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-22 00:36:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 00:36:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-22 00:36:56,162 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-22 00:36:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:36:56,163 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-22 00:36:56,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 00:36:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-22 00:36:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 00:36:56,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:36:56,166 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] [2020-08-22 00:36:56,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:36:56,167 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:36:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:36:56,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 00:36:56,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:36:56,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704738182] [2020-08-22 00:36:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:36:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 00:36:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:56,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:56,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 00:36:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 00:36:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:36:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:57,652 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-22 00:36:58,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 00:36:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:58,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:36:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:36:59,150 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-22 00:36:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:36:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:37:11,984 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 257 DAG size of output: 48