/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=0.2 --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 03:51:30,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:51:30,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:51:30,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:51:30,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:51:30,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:51:30,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:51:30,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:51:30,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:51:30,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:51:30,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:51:30,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:51:30,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:51:30,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:51:30,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:51:30,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:51:30,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:51:30,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:51:30,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:51:30,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:51:30,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:51:30,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:51:30,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:51:30,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:51:30,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:51:30,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:51:30,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:51:30,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:51:30,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:51:30,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:51:30,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:51:30,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:51:30,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:51:30,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:51:30,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:51:30,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:51:30,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:51:30,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:51:30,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:51:30,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:51:30,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:51:30,147 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 03:51:30,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:51:30,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:51:30,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:51:30,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:51:30,193 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:51:30,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:51:30,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:51:30,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:51:30,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:51:30,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:51:30,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:51:30,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:51:30,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:51:30,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:51:30,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:51:30,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:51:30,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:51:30,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:51:30,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:51:30,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:51:30,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:51:30,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:51:30,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:51:30,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:51:30,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:51:30,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:51:30,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:51:30,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:51:30,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:51:30,199 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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-08-22 03:51:30,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:51:30,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:51:30,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:51:30,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:51:30,520 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:51:30,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 03:51:30,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fdf99084/ff6d4037072843eaad21d14a4ddf7496/FLAGb7825a379 [2020-08-22 03:51:31,185 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:51:31,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 03:51:31,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fdf99084/ff6d4037072843eaad21d14a4ddf7496/FLAGb7825a379 [2020-08-22 03:51:31,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3fdf99084/ff6d4037072843eaad21d14a4ddf7496 [2020-08-22 03:51:31,472 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:51:31,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:51:31,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:31,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:51:31,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:51:31,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e175ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31, skipping insertion in model container [2020-08-22 03:51:31,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:51:31,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:51:32,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:32,044 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:51:32,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:32,170 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:51:32,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32 WrapperNode [2020-08-22 03:51:32,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:32,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:51:32,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:51:32,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:51:32,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (1/1) ... [2020-08-22 03:51:32,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:51:32,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:51:32,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:51:32,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:51:32,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (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 03:51:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:51:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:51:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 03:51:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 03:51:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 03:51:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 03:51:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 03:51:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 03:51:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 03:51:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 03:51:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 03:51:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 03:51:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 03:51:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 03:51:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 03:51:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 03:51:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:51:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:51:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 03:51:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 03:51:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 03:51:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 03:51:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 03:51:32,340 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 03:51:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 03:51:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 03:51:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 03:51:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 03:51:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 03:51:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 03:51:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 03:51:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 03:51:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 03:51:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:51:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 03:51:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 03:51:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 03:51:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 03:51:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 03:51:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 03:51:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 03:51:32,354 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:51:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 03:51:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:51:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 03:51:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:51:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:51:33,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:51:33,245 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 03:51:33,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:33 BoogieIcfgContainer [2020-08-22 03:51:33,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:51:33,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:51:33,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:51:33,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:51:33,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:51:31" (1/3) ... [2020-08-22 03:51:33,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ffd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:33, skipping insertion in model container [2020-08-22 03:51:33,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:32" (2/3) ... [2020-08-22 03:51:33,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724ffd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:33, skipping insertion in model container [2020-08-22 03:51:33,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:33" (3/3) ... [2020-08-22 03:51:33,260 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 03:51:33,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:51:33,280 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:51:33,295 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:51:33,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:51:33,322 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:51:33,323 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:51:33,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:51:33,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:51:33,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:51:33,323 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:51:33,323 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:51:33,348 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 03:51:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:51:33,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:33,359 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 03:51:33,360 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:33,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:33,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 03:51:33,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:33,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32100588] [2020-08-22 03:51:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,903 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 03:51:33,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32100588] [2020-08-22 03:51:33,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:33,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:51:33,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132242456] [2020-08-22 03:51:33,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:51:33,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:33,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:51:33,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:51:33,933 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 03:51:34,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:34,396 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 03:51:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:51:34,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 03:51:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:34,431 INFO L225 Difference]: With dead ends: 343 [2020-08-22 03:51:34,431 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 03:51:34,445 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 03:51:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 03:51:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 03:51:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 03:51:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 03:51:34,572 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 03:51:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:34,573 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 03:51:34,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:51:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 03:51:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:51:34,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:34,577 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 03:51:34,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:51:34,578 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:34,578 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 03:51:34,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:34,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799266705] [2020-08-22 03:51:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,125 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 03:51:35,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799266705] [2020-08-22 03:51:35,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:35,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:51:35,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049721630] [2020-08-22 03:51:35,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:51:35,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:35,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:51:35,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:51:35,130 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 03:51:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:36,342 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 03:51:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:51:36,343 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 03:51:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:36,346 INFO L225 Difference]: With dead ends: 327 [2020-08-22 03:51:36,346 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 03:51:36,348 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 03:51:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 03:51:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 03:51:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 03:51:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 03:51:36,372 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 03:51:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:36,372 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 03:51:36,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:51:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 03:51:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:36,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:36,377 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 03:51:36,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:51:36,377 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:36,378 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 03:51:36,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:36,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876177994] [2020-08-22 03:51:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:38,151 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 03:51:38,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876177994] [2020-08-22 03:51:38,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:38,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-22 03:51:38,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515503373] [2020-08-22 03:51:38,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 03:51:38,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:38,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 03:51:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-22 03:51:38,155 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-22 03:51:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:41,805 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-22 03:51:41,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-22 03:51:41,806 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-22 03:51:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:41,809 INFO L225 Difference]: With dead ends: 358 [2020-08-22 03:51:41,809 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 03:51:41,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-22 03:51:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 03:51:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-22 03:51:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 03:51:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 03:51:41,837 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 03:51:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:41,837 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 03:51:41,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 03:51:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 03:51:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:41,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:41,840 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 03:51:41,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:51:41,840 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:41,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 03:51:41,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:41,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285246999] [2020-08-22 03:51:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:42,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:43,119 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 03:51:43,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285246999] [2020-08-22 03:51:43,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:43,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 03:51:43,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789060914] [2020-08-22 03:51:43,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 03:51:43,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 03:51:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:51:43,123 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-22 03:51:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:45,404 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-22 03:51:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:51:45,405 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 03:51:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:45,409 INFO L225 Difference]: With dead ends: 375 [2020-08-22 03:51:45,409 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 03:51:45,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-22 03:51:45,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 03:51:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-22 03:51:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-22 03:51:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-22 03:51:45,433 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-22 03:51:45,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:45,434 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-22 03:51:45,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 03:51:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-22 03:51:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:45,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:45,437 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 03:51:45,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:51:45,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:45,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 03:51:45,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:45,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291763114] [2020-08-22 03:51:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:46,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:47,053 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 03:51:47,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291763114] [2020-08-22 03:51:47,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:47,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 03:51:47,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732822471] [2020-08-22 03:51:47,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 03:51:47,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:47,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 03:51:47,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 03:51:47,056 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-22 03:51:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:49,402 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-22 03:51:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 03:51:49,402 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 03:51:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:49,406 INFO L225 Difference]: With dead ends: 327 [2020-08-22 03:51:49,407 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 03:51:49,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 03:51:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 03:51:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-22 03:51:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 03:51:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-22 03:51:49,428 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-22 03:51:49,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:49,429 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-22 03:51:49,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 03:51:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-22 03:51:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 03:51:49,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:49,432 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 03:51:49,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:51:49,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:49,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 03:51:49,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:49,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238504202] [2020-08-22 03:51:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:50,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:51,067 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-22 03:51:51,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:51,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:52,793 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-22 03:51:52,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:52:06,570 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 257 DAG size of output: 48