/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=LOWLEXORDER --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 [2020-08-21 18:09:11,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 18:09:11,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 18:09:11,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 18:09:11,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 18:09:11,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 18:09:11,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 18:09:11,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 18:09:11,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 18:09:11,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 18:09:11,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 18:09:11,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 18:09:11,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 18:09:11,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 18:09:11,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 18:09:11,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 18:09:11,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 18:09:11,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 18:09:11,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 18:09:11,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 18:09:11,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 18:09:11,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 18:09:11,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 18:09:11,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 18:09:11,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 18:09:11,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 18:09:11,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 18:09:11,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 18:09:11,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 18:09:11,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 18:09:11,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 18:09:11,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 18:09:11,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 18:09:11,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 18:09:11,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 18:09:11,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 18:09:11,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 18:09:11,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 18:09:11,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 18:09:11,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 18:09:11,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 18:09:11,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 18:09:11,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 18:09:11,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 18:09:11,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 18:09:11,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 18:09:11,232 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 18:09:11,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 18:09:11,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 18:09:11,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 18:09:11,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 18:09:11,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 18:09:11,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 18:09:11,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 18:09:11,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 18:09:11,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 18:09:11,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 18:09:11,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 18:09:11,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 18:09:11,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 18:09:11,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 18:09:11,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 18:09:11,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 18:09:11,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:09:11,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 18:09:11,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 18:09:11,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 18:09:11,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 18:09:11,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 18:09:11,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 18:09:11,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 18:09:11,239 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=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-08-21 18:09:11,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 18:09:11,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 18:09:11,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 18:09:11,549 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 18:09:11,549 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 18:09:11,550 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 18:09:11,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb195fa0f/f2160b3851d14f9e8d220e6098ef68b6/FLAGd0f88cbb7 [2020-08-21 18:09:12,183 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 18:09:12,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 18:09:12,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb195fa0f/f2160b3851d14f9e8d220e6098ef68b6/FLAGd0f88cbb7 [2020-08-21 18:09:12,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb195fa0f/f2160b3851d14f9e8d220e6098ef68b6 [2020-08-21 18:09:12,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 18:09:12,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 18:09:12,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:12,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 18:09:12,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 18:09:12,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:12" (1/1) ... [2020-08-21 18:09:12,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b337bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:12, skipping insertion in model container [2020-08-21 18:09:12,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 06:09:12" (1/1) ... [2020-08-21 18:09:12,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 18:09:12,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 18:09:13,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:13,148 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 18:09:13,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 18:09:13,306 INFO L208 MainTranslator]: Completed translation [2020-08-21 18:09:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13 WrapperNode [2020-08-21 18:09:13,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 18:09:13,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 18:09:13,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 18:09:13,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 18:09:13,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... [2020-08-21 18:09:13,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 18:09:13,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 18:09:13,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 18:09:13,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 18:09:13,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 18:09:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 18:09:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 18:09:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 18:09:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 18:09:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 18:09:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 18:09:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 18:09:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 18:09:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 18:09:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 18:09:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 18:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 18:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 18:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 18:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 18:09:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 18:09:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 18:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 18:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 18:09:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 18:09:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 18:09:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 18:09:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 18:09:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 18:09:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 18:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 18:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 18:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 18:09:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 18:09:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 18:09:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 18:09:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 18:09:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 18:09:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 18:09:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 18:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 18:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 18:09:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 18:09:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 18:09:13,495 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 18:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 18:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 18:09:13,496 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 18:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 18:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 18:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 18:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 18:09:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 18:09:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 18:09:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 18:09:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 18:09:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 18:09:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 18:09:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 18:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 18:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 18:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 18:09:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 18:09:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 18:09:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 18:09:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 18:09:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 18:09:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 18:09:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 18:09:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 18:09:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 18:09:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 18:09:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 18:09:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 18:09:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 18:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 18:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 18:09:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 18:09:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 18:09:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 18:09:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 18:09:14,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 18:09:14,445 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 18:09:14,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:14 BoogieIcfgContainer [2020-08-21 18:09:14,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 18:09:14,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 18:09:14,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 18:09:14,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 18:09:14,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 06:09:12" (1/3) ... [2020-08-21 18:09:14,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d94da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:14, skipping insertion in model container [2020-08-21 18:09:14,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 06:09:13" (2/3) ... [2020-08-21 18:09:14,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14d94da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 06:09:14, skipping insertion in model container [2020-08-21 18:09:14,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 06:09:14" (3/3) ... [2020-08-21 18:09:14,460 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 18:09:14,471 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 18:09:14,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 18:09:14,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 18:09:14,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 18:09:14,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 18:09:14,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 18:09:14,524 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 18:09:14,524 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 18:09:14,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 18:09:14,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 18:09:14,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 18:09:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 18:09:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 18:09:14,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:14,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:14,561 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:14,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 18:09:14,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:14,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632334591] [2020-08-21 18:09:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:14,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 18:09:15,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632334591] [2020-08-21 18:09:15,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 18:09:15,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 18:09:15,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16172865] [2020-08-21 18:09:15,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 18:09:15,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:15,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 18:09:15,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 18:09:15,144 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 18:09:15,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:15,621 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 18:09:15,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 18:09:15,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 18:09:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:15,637 INFO L225 Difference]: With dead ends: 343 [2020-08-21 18:09:15,637 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 18:09:15,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 18:09:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 18:09:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 18:09:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 18:09:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 18:09:15,714 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 18:09:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:15,715 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 18:09:15,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 18:09:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 18:09:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 18:09:15,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:15,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:15,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 18:09:15,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:15,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 18:09:15,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:15,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210481819] [2020-08-21 18:09:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:15,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:16,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 18:09:16,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210481819] [2020-08-21 18:09:16,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:16,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 18:09:16,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915831177] [2020-08-21 18:09:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 18:09:16,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:16,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 18:09:16,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 18:09:16,208 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 18:09:17,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:17,466 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 18:09:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 18:09:17,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 18:09:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:17,470 INFO L225 Difference]: With dead ends: 327 [2020-08-21 18:09:17,471 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 18:09:17,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-21 18:09:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 18:09:17,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 18:09:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 18:09:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 18:09:17,523 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 18:09:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:17,523 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 18:09:17,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 18:09:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 18:09:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 18:09:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:17,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:17,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 18:09:17,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:17,539 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 18:09:17,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:17,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181971563] [2020-08-21 18:09:17,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:17,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:17,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:18,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:09:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 18:09:19,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181971563] [2020-08-21 18:09:19,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:19,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 18:09:19,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574272815] [2020-08-21 18:09:19,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 18:09:19,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 18:09:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 18:09:19,324 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 18:09:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:22,910 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 18:09:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 18:09:22,911 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 18:09:22,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:22,914 INFO L225 Difference]: With dead ends: 358 [2020-08-21 18:09:22,914 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 18:09:22,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 18:09:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 18:09:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 18:09:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 18:09:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 18:09:22,940 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 18:09:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:22,940 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 18:09:22,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 18:09:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 18:09:22,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 18:09:22,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:22,943 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:22,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 18:09:22,944 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:22,944 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 18:09:22,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:22,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273348449] [2020-08-21 18:09:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:09:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:23,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 18:09:24,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273348449] [2020-08-21 18:09:24,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:24,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 18:09:24,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272698739] [2020-08-21 18:09:24,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 18:09:24,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 18:09:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 18:09:24,242 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 18:09:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:26,440 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 18:09:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 18:09:26,442 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 18:09:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:26,444 INFO L225 Difference]: With dead ends: 375 [2020-08-21 18:09:26,444 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 18:09:26,446 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 [2020-08-21 18:09:26,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 18:09:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 18:09:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 18:09:26,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 18:09:26,465 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 18:09:26,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:26,466 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 18:09:26,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 18:09:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 18:09:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 18:09:26,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:26,468 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:26,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 18:09:26,468 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:26,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:26,469 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 18:09:26,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:26,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404820901] [2020-08-21 18:09:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:26,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:09:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 18:09:27,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404820901] [2020-08-21 18:09:27,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 18:09:27,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 18:09:27,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788231093] [2020-08-21 18:09:27,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 18:09:27,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 18:09:27,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 18:09:27,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 18:09:27,808 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 18:09:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 18:09:29,978 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 18:09:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 18:09:29,979 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 18:09:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 18:09:29,983 INFO L225 Difference]: With dead ends: 327 [2020-08-21 18:09:29,983 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 18:09:29,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 18:09:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 18:09:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 18:09:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 18:09:30,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 18:09:30,029 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 18:09:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 18:09:30,032 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 18:09:30,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 18:09:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 18:09:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 18:09:30,036 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 18:09:30,036 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 18:09:30,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 18:09:30,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 18:09:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 18:09:30,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 18:09:30,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 18:09:30,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445723166] [2020-08-21 18:09:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 18:09:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:30,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 18:09:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:30,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:30,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 18:09:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 18:09:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 18:09:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:31,667 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-21 18:09:32,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 18:09:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 18:09:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:33,303 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 18:09:33,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 18:09:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 18:09:46,305 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 257 DAG size of output: 48