/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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 05:28:40,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:28:40,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:28:40,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:28:40,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:28:40,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:28:40,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:28:40,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:28:40,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:28:40,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:28:40,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:28:40,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:28:40,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:28:40,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:28:40,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:28:40,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:28:40,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:28:40,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:28:40,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:28:40,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:28:40,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:28:40,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:28:40,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:28:40,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:28:40,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:28:40,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:28:40,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:28:40,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:28:40,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:28:40,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:28:40,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:28:40,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:28:40,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:28:40,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:28:40,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:28:40,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:28:40,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:28:40,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:28:40,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:28:40,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:28:40,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:28:40,067 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 05:28:40,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:28:40,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:28:40,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:28:40,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:28:40,091 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:28:40,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:28:40,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:28:40,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:28:40,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:28:40,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:28:40,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:28:40,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:28:40,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:28:40,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:28:40,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:28:40,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:28:40,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:28:40,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:28:40,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:28:40,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:28:40,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:28:40,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:28:40,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:28:40,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:28:40,096 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:28:40,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:28:40,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:28:40,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:28:40,452 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:28:40,454 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:28:40,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 05:28:40,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36075da9/7ae284c6ad7047da999a66cbb47b4a5d/FLAG8ec006378 [2020-08-22 05:28:41,052 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:28:41,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 05:28:41,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36075da9/7ae284c6ad7047da999a66cbb47b4a5d/FLAG8ec006378 [2020-08-22 05:28:41,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b36075da9/7ae284c6ad7047da999a66cbb47b4a5d [2020-08-22 05:28:41,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:28:41,375 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:28:41,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:41,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:28:41,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:28:41,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee1c646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:41, skipping insertion in model container [2020-08-22 05:28:41,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:41" (1/1) ... [2020-08-22 05:28:41,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:28:41,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:28:41,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:41,962 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:28:42,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:42,137 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:28:42,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42 WrapperNode [2020-08-22 05:28:42,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:42,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:28:42,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:28:42,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:28:42,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (1/1) ... [2020-08-22 05:28:42,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:28:42,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:28:42,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:28:42,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:28:42,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (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 05:28:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:28:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:28:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:28:42,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 05:28:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 05:28:42,315 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 05:28:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 05:28:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 05:28:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 05:28:42,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:28:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:28:42,316 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 05:28:42,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 05:28:42,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 05:28:42,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 05:28:42,320 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 05:28:42,321 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 05:28:42,322 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 05:28:42,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 05:28:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 05:28:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 05:28:42,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 05:28:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 05:28:42,325 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 05:28:42,326 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 05:28:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 05:28:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:28:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:28:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 05:28:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:28:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 05:28:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 05:28:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 05:28:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 05:28:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 05:28:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 05:28:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 05:28:42,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 05:28:42,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 05:28:42,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:28:42,335 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 05:28:42,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 05:28:42,337 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 05:28:42,338 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:28:42,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:28:43,149 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:28:43,149 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 05:28:43,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:43 BoogieIcfgContainer [2020-08-22 05:28:43,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:28:43,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:28:43,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:28:43,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:28:43,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:28:41" (1/3) ... [2020-08-22 05:28:43,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103c1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:43, skipping insertion in model container [2020-08-22 05:28:43,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:42" (2/3) ... [2020-08-22 05:28:43,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2103c1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:43, skipping insertion in model container [2020-08-22 05:28:43,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:43" (3/3) ... [2020-08-22 05:28:43,164 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 05:28:43,177 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:28:43,185 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:28:43,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:28:43,227 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:28:43,227 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:28:43,227 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:28:43,228 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:28:43,228 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:28:43,228 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:28:43,228 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:28:43,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:28:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 05:28:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:28:43,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:43,265 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 05:28:43,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:43,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:43,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 05:28:43,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:43,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869998896] [2020-08-22 05:28:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:43,807 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 05:28:43,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869998896] [2020-08-22 05:28:43,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:43,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:28:43,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371243540] [2020-08-22 05:28:43,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:28:43,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:43,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:28:43,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:28:43,833 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 05:28:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:44,295 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 05:28:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:28:44,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 05:28:44,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:44,311 INFO L225 Difference]: With dead ends: 343 [2020-08-22 05:28:44,311 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 05:28:44,318 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 05:28:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 05:28:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 05:28:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 05:28:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 05:28:44,399 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 05:28:44,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:44,400 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 05:28:44,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:28:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 05:28:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:28:44,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:44,406 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 05:28:44,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:28:44,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:44,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:44,407 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 05:28:44,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:44,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731441592] [2020-08-22 05:28:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:44,939 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 05:28:44,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731441592] [2020-08-22 05:28:44,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:44,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:28:44,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871098299] [2020-08-22 05:28:44,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:28:44,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:44,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:28:44,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:28:44,952 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 05:28:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:46,282 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 05:28:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:28:46,283 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 05:28:46,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:46,288 INFO L225 Difference]: With dead ends: 327 [2020-08-22 05:28:46,288 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 05:28:46,290 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 05:28:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 05:28:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 05:28:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 05:28:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 05:28:46,314 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 05:28:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:46,314 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 05:28:46,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:28:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 05:28:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:46,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:46,318 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 05:28:46,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:28:46,318 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 05:28:46,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:46,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437306804] [2020-08-22 05:28:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:46,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:48,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:48,423 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 05:28:48,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437306804] [2020-08-22 05:28:48,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:48,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 05:28:48,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071458737] [2020-08-22 05:28:48,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 05:28:48,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:48,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 05:28:48,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-22 05:28:48,428 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-22 05:28:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:52,327 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-22 05:28:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 05:28:52,327 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-22 05:28:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:52,330 INFO L225 Difference]: With dead ends: 358 [2020-08-22 05:28:52,331 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 05:28:52,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 05:28:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 05:28:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-22 05:28:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 05:28:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 05:28:52,361 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 05:28:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:52,364 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 05:28:52,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 05:28:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 05:28:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:52,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:52,367 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 05:28:52,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:28:52,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:52,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:52,368 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 05:28:52,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:52,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071127925] [2020-08-22 05:28:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:53,486 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 05:28:53,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071127925] [2020-08-22 05:28:53,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:53,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 05:28:53,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85136438] [2020-08-22 05:28:53,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 05:28:53,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:53,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 05:28:53,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:28:53,490 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-22 05:28:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:55,779 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-22 05:28:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 05:28:55,779 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 05:28:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:55,784 INFO L225 Difference]: With dead ends: 375 [2020-08-22 05:28:55,785 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 05:28:55,789 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 [2020-08-22 05:28:55,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 05:28:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-22 05:28:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-22 05:28:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-22 05:28:55,831 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-22 05:28:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:55,831 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-22 05:28:55,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 05:28:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-22 05:28:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 05:28:55,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:55,837 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 05:28:55,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:28:55,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:55,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 05:28:55,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:55,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [508268922] [2020-08-22 05:28:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:55,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:55,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:28:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:28:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:28:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:28:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:56,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:28:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:28:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:57,162 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 05:28:57,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [508268922] [2020-08-22 05:28:57,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:28:57,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 05:28:57,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300751445] [2020-08-22 05:28:57,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 05:28:57,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:57,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 05:28:57,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 05:28:57,166 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-22 05:28:59,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:59,804 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-22 05:28:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 05:28:59,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 05:28:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:59,809 INFO L225 Difference]: With dead ends: 327 [2020-08-22 05:28:59,809 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 05:28:59,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 05:28:59,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 05:28:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-22 05:28:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 05:28:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-22 05:28:59,857 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-22 05:28:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:59,858 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-22 05:28:59,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 05:28:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-22 05:28:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 05:28:59,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:59,869 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 05:28:59,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:28:59,870 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:59,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:59,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 05:28:59,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:59,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416021876] [2020-08-22 05:28:59,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 05:29:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:29:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 05:29:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:00,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 05:29:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:29:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:01,546 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-22 05:29:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:29:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:02,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:29:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:02,977 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-22 05:29:02,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:29:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:29:17,760 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 257 DAG size of output: 48