/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:51:29,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:51:29,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:51:29,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:51:29,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:51:29,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:51:29,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:51:29,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:51:29,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:51:29,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:51:29,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:51:29,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:51:29,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:51:29,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:51:29,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:51:29,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:51:29,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:51:29,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:51:29,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:51:29,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:51:29,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:51:29,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:51:29,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:51:29,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:51:29,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:51:29,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:51:29,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:51:29,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:51:29,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:51:29,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:51:29,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:51:29,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:51:29,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:51:29,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:51:29,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:51:29,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:51:29,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:51:29,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:51:29,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:51:29,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:51:29,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:51:29,286 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 03:51:29,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:51:29,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:51:29,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:51:29,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:51:29,329 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:51:29,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:51:29,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:51:29,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:51:29,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:51:29,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:51:29,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:51:29,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:51:29,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:51:29,331 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:51:29,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:51:29,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:51:29,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:51:29,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:51:29,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:51:29,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:51:29,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:51:29,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:51:29,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:51:29,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:51:29,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:51:29,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:51:29,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:51:29,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:51:29,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:51:29,334 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 03:51:29,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:51:29,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:51:29,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:51:29,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:51:29,700 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:51:29,701 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 03:51:29,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff090a00/fa67ef30b7b0403c8e0245fa57664846/FLAG02e83c6fe [2020-08-22 03:51:30,385 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:51:30,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 03:51:30,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff090a00/fa67ef30b7b0403c8e0245fa57664846/FLAG02e83c6fe [2020-08-22 03:51:30,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ff090a00/fa67ef30b7b0403c8e0245fa57664846 [2020-08-22 03:51:30,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:51:30,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:51:30,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:30,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:51:30,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:51:30,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:30" (1/1) ... [2020-08-22 03:51:30,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc622fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:30, skipping insertion in model container [2020-08-22 03:51:30,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:51:30" (1/1) ... [2020-08-22 03:51:30,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:51:30,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:51:31,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:31,246 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:51:31,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:51:31,395 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:51:31,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31 WrapperNode [2020-08-22 03:51:31,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:51:31,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:51:31,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:51:31,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:51:31,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (1/1) ... [2020-08-22 03:51:31,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:51:31,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:51:31,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:51:31,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:51:31,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (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 03:51:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:51:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:51:31,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:51:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 03:51:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 03:51:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 03:51:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 03:51:31,567 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 03:51:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 03:51:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 03:51:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 03:51:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 03:51:31,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 03:51:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 03:51:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 03:51:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 03:51:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 03:51:31,569 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 03:51:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 03:51:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 03:51:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 03:51:31,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:51:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:51:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 03:51:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 03:51:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 03:51:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 03:51:31,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 03:51:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 03:51:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 03:51:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 03:51:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 03:51:31,573 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 03:51:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 03:51:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 03:51:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 03:51:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 03:51:31,574 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 03:51:31,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 03:51:31,576 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 03:51:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 03:51:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 03:51:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 03:51:31,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 03:51:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 03:51:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 03:51:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 03:51:31,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 03:51:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 03:51:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 03:51:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 03:51:31,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 03:51:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 03:51:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 03:51:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 03:51:31,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 03:51:31,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 03:51:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 03:51:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 03:51:31,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 03:51:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:51:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 03:51:31,583 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 03:51:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:51:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 03:51:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 03:51:31,584 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 03:51:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 03:51:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 03:51:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:51:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 03:51:31,585 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 03:51:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 03:51:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 03:51:31,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 03:51:31,589 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 03:51:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 03:51:31,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 03:51:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 03:51:31,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 03:51:31,592 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 03:51:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 03:51:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 03:51:31,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:51:31,594 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 03:51:31,597 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 03:51:31,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:51:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 03:51:31,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 03:51:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:51:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 03:51:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 03:51:31,607 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 03:51:31,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:51:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:51:31,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:51:32,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:51:32,437 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 03:51:32,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:32 BoogieIcfgContainer [2020-08-22 03:51:32,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:51:32,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:51:32,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:51:32,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:51:32,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:51:30" (1/3) ... [2020-08-22 03:51:32,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee244f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:32, skipping insertion in model container [2020-08-22 03:51:32,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:51:31" (2/3) ... [2020-08-22 03:51:32,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee244f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:51:32, skipping insertion in model container [2020-08-22 03:51:32,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:51:32" (3/3) ... [2020-08-22 03:51:32,451 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 03:51:32,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:51:32,470 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:51:32,485 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:51:32,512 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:51:32,512 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:51:32,512 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:51:32,513 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:51:32,513 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:51:32,513 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:51:32,513 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:51:32,513 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:51:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 03:51:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 03:51:32,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:32,549 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 03:51:32,549 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:32,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 03:51:32,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:32,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875680006] [2020-08-22 03:51:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:33,129 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 03:51:33,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875680006] [2020-08-22 03:51:33,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:51:33,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:51:33,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589672786] [2020-08-22 03:51:33,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:51:33,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:33,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:51:33,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:51:33,156 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 03:51:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:33,715 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 03:51:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:51:33,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 03:51:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:33,731 INFO L225 Difference]: With dead ends: 343 [2020-08-22 03:51:33,732 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 03:51:33,739 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 03:51:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 03:51:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 03:51:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 03:51:33,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 03:51:33,832 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 03:51:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:33,832 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 03:51:33,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:51:33,833 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 03:51:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 03:51:33,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:33,836 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 03:51:33,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:51:33,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:33,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:33,838 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 03:51:33,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:33,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284587950] [2020-08-22 03:51:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:34,473 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 03:51:34,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284587950] [2020-08-22 03:51:34,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:34,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 03:51:34,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374726923] [2020-08-22 03:51:34,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 03:51:34,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:34,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 03:51:34,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:51:34,482 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 03:51:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:35,716 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 03:51:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 03:51:35,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 03:51:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:35,720 INFO L225 Difference]: With dead ends: 327 [2020-08-22 03:51:35,720 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 03:51:35,722 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 03:51:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 03:51:35,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 03:51:35,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 03:51:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 03:51:35,746 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 03:51:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:35,746 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 03:51:35,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 03:51:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 03:51:35,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:35,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:35,753 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 03:51:35,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:51:35,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:35,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:35,754 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 03:51:35,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:35,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714900253] [2020-08-22 03:51:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 03:51:37,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714900253] [2020-08-22 03:51:37,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:37,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 03:51:37,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147068446] [2020-08-22 03:51:37,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 03:51:37,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 03:51:37,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 03:51:37,293 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-22 03:51:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:40,348 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-22 03:51:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 03:51:40,348 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 03:51:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:40,351 INFO L225 Difference]: With dead ends: 348 [2020-08-22 03:51:40,351 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 03:51:40,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 03:51:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 03:51:40,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-22 03:51:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 03:51:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-22 03:51:40,407 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-22 03:51:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:40,411 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-22 03:51:40,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 03:51:40,435 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-22 03:51:40,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:40,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:40,444 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 03:51:40,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:51:40,445 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:40,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:40,446 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 03:51:40,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:40,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737906640] [2020-08-22 03:51:40,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:40,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:40,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:41,879 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 03:51:41,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737906640] [2020-08-22 03:51:41,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:41,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-22 03:51:41,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569297664] [2020-08-22 03:51:41,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-22 03:51:41,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:41,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-22 03:51:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-22 03:51:41,885 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-22 03:51:44,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:44,026 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-22 03:51:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 03:51:44,028 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-22 03:51:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:44,032 INFO L225 Difference]: With dead ends: 360 [2020-08-22 03:51:44,032 INFO L226 Difference]: Without dead ends: 193 [2020-08-22 03:51:44,034 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 03:51:44,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-22 03:51:44,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-22 03:51:44,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-22 03:51:44,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-22 03:51:44,052 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-22 03:51:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:44,052 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-22 03:51:44,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-22 03:51:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-22 03:51:44,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:44,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:44,055 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 03:51:44,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:51:44,056 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:44,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-22 03:51:44,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:44,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219221739] [2020-08-22 03:51:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-22 03:51:45,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219221739] [2020-08-22 03:51:45,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:45,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-22 03:51:45,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816741804] [2020-08-22 03:51:45,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 03:51:45,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 03:51:45,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-22 03:51:45,581 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-22 03:51:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:48,488 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-22 03:51:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 03:51:48,488 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-22 03:51:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:48,497 INFO L225 Difference]: With dead ends: 371 [2020-08-22 03:51:48,498 INFO L226 Difference]: Without dead ends: 198 [2020-08-22 03:51:48,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 03:51:48,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-22 03:51:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-22 03:51:48,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-22 03:51:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-22 03:51:48,527 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-22 03:51:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:48,528 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-22 03:51:48,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 03:51:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-22 03:51:48,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 03:51:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:48,536 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 03:51:48,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:51:48,537 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:48,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:48,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-22 03:51:48,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:48,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283945385] [2020-08-22 03:51:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:48,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:49,977 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 03:51:49,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283945385] [2020-08-22 03:51:49,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 03:51:49,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-22 03:51:49,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230566737] [2020-08-22 03:51:49,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-22 03:51:49,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:51:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-22 03:51:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-22 03:51:49,982 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-22 03:51:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:51:52,454 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-22 03:51:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-22 03:51:52,454 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-22 03:51:52,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:51:52,458 INFO L225 Difference]: With dead ends: 323 [2020-08-22 03:51:52,458 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 03:51:52,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 03:51:52,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 03:51:52,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-22 03:51:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-22 03:51:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-22 03:51:52,480 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-22 03:51:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:51:52,481 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-22 03:51:52,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-22 03:51:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-22 03:51:52,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 03:51:52,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:51:52,484 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 03:51:52,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:51:52,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:51:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:51:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 03:51:52,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:51:52,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033959127] [2020-08-22 03:51:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:51:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:52,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 03:51:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:53,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:53,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:54,907 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-22 03:51:55,775 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-22 03:51:56,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:56,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 03:51:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:57,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 03:51:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:57,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 03:51:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:51:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:58,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:51:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:51:59,541 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-22 03:51:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:51:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat