/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=WIDEST --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 [2020-08-21 22:11:12,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:11:12,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:11:12,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:11:12,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:11:12,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:11:12,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:11:12,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:11:12,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:11:12,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:11:12,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:11:12,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:11:12,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:11:12,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:11:12,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:11:12,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:11:12,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:11:12,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:11:12,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:11:12,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:11:12,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:11:12,331 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:11:12,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:11:12,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:11:12,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:11:12,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:11:12,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:11:12,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:11:12,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:11:12,337 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:11:12,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:11:12,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:11:12,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:11:12,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:11:12,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:11:12,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:11:12,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:11:12,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:11:12,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:11:12,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:11:12,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:11:12,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 22:11:12,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:11:12,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:11:12,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:11:12,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:11:12,376 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:11:12,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:11:12,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:11:12,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:11:12,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:11:12,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:11:12,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:11:12,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:11:12,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:11:12,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:11:12,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:11:12,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:11:12,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:11:12,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:11:12,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:11:12,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:11:12,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:11:12,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:11:12,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:11:12,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:11:12,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:11:12,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:11:12,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:11:12,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:11:12,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:11:12,381 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:11:12,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:11:12,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:11:12,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:11:12,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:11:12,676 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:11:12,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 22:11:12,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eee65b54c/ebb7ba78546e42888eeee9d4f6e3cbc4/FLAG0dc97599d [2020-08-21 22:11:13,248 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:11:13,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-21 22:11:13,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eee65b54c/ebb7ba78546e42888eeee9d4f6e3cbc4/FLAG0dc97599d [2020-08-21 22:11:13,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eee65b54c/ebb7ba78546e42888eeee9d4f6e3cbc4 [2020-08-21 22:11:13,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:11:13,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:11:13,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:13,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:11:13,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:11:13,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:13" (1/1) ... [2020-08-21 22:11:13,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b809082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:13, skipping insertion in model container [2020-08-21 22:11:13,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:13" (1/1) ... [2020-08-21 22:11:13,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:11:13,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:11:14,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:14,143 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:11:14,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:14,264 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:11:14,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14 WrapperNode [2020-08-21 22:11:14,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:14,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:11:14,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:11:14,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:11:14,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... [2020-08-21 22:11:14,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:11:14,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:11:14,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:11:14,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:11:14,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:11:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:11:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:11:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:11:14,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 22:11:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 22:11:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 22:11:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 22:11:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 22:11:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 22:11:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 22:11:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 22:11:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 22:11:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 22:11:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 22:11:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 22:11:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 22:11:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 22:11:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 22:11:14,410 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 22:11:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 22:11:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 22:11:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:11:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:11:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 22:11:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 22:11:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 22:11:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 22:11:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 22:11:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 22:11:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 22:11:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 22:11:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 22:11:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 22:11:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 22:11:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 22:11:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 22:11:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 22:11:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 22:11:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 22:11:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 22:11:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 22:11:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 22:11:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 22:11:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 22:11:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 22:11:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 22:11:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 22:11:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 22:11:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 22:11:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 22:11:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 22:11:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 22:11:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 22:11:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 22:11:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 22:11:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 22:11:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 22:11:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 22:11:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 22:11:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 22:11:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 22:11:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 22:11:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 22:11:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 22:11:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 22:11:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 22:11:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 22:11:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 22:11:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:11:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 22:11:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 22:11:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:11:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:11:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 22:11:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 22:11:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:11:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 22:11:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 22:11:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 22:11:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 22:11:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:11:14,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:11:14,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:11:15,263 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:11:15,264 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 22:11:15,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:15 BoogieIcfgContainer [2020-08-21 22:11:15,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:11:15,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:11:15,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:11:15,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:11:15,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:11:13" (1/3) ... [2020-08-21 22:11:15,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee19b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:15, skipping insertion in model container [2020-08-21 22:11:15,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:14" (2/3) ... [2020-08-21 22:11:15,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee19b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:15, skipping insertion in model container [2020-08-21 22:11:15,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:15" (3/3) ... [2020-08-21 22:11:15,277 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-21 22:11:15,287 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:11:15,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:11:15,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:11:15,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:11:15,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:11:15,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:11:15,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:11:15,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:11:15,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:11:15,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:11:15,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:11:15,359 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 22:11:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 22:11:15,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:15,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:15,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:15,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:15,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 22:11:15,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:15,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037630469] [2020-08-21 22:11:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 22:11:15,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037630469] [2020-08-21 22:11:15,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:15,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:11:15,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910127455] [2020-08-21 22:11:15,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:11:15,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:15,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:11:15,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:11:15,939 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 22:11:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:16,377 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 22:11:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:11:16,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 22:11:16,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:16,393 INFO L225 Difference]: With dead ends: 343 [2020-08-21 22:11:16,393 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:11:16,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:11:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:11:16,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 22:11:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 22:11:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 22:11:16,460 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 22:11:16,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:16,461 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 22:11:16,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:11:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 22:11:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 22:11:16,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:16,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:16,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:11:16,465 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 22:11:16,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:16,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788477645] [2020-08-21 22:11:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 22:11:16,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788477645] [2020-08-21 22:11:16,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:11:16,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:11:16,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025528661] [2020-08-21 22:11:16,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:11:16,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:16,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:11:16,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:11:16,903 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 22:11:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:18,037 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 22:11:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:11:18,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 22:11:18,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:18,042 INFO L225 Difference]: With dead ends: 327 [2020-08-21 22:11:18,042 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 22:11:18,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:11:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 22:11:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 22:11:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 22:11:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 22:11:18,068 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 22:11:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:18,068 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 22:11:18,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:11:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 22:11:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:11:18,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:18,076 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:18,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:11:18,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 22:11:18,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:18,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192516470] [2020-08-21 22:11:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:11:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-21 22:11:19,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192516470] [2020-08-21 22:11:19,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:11:19,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 22:11:19,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034779444] [2020-08-21 22:11:19,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 22:11:19,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:19,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 22:11:19,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:11:19,635 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-21 22:11:22,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:22,523 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-21 22:11:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 22:11:22,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 22:11:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:22,528 INFO L225 Difference]: With dead ends: 348 [2020-08-21 22:11:22,528 INFO L226 Difference]: Without dead ends: 189 [2020-08-21 22:11:22,530 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 [2020-08-21 22:11:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-21 22:11:22,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-21 22:11:22,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-21 22:11:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-21 22:11:22,553 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-21 22:11:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:22,553 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-21 22:11:22,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 22:11:22,554 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-21 22:11:22,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:11:22,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:22,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:22,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:11:22,557 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:22,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:22,557 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 22:11:22,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:22,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118538721] [2020-08-21 22:11:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:22,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:22,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:22,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:11:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:23,923 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 22:11:23,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118538721] [2020-08-21 22:11:23,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:11:23,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:11:23,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808643082] [2020-08-21 22:11:23,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:11:23,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:23,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:11:23,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:11:23,926 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-21 22:11:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:26,161 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-21 22:11:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:11:26,161 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 22:11:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:26,164 INFO L225 Difference]: With dead ends: 360 [2020-08-21 22:11:26,164 INFO L226 Difference]: Without dead ends: 193 [2020-08-21 22:11:26,166 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 [2020-08-21 22:11:26,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-21 22:11:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-21 22:11:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-21 22:11:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-21 22:11:26,188 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-21 22:11:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:26,188 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-21 22:11:26,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 22:11:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-21 22:11:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:11:26,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:26,192 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:26,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:11:26,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-21 22:11:26,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:26,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51610890] [2020-08-21 22:11:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:11:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-21 22:11:27,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51610890] [2020-08-21 22:11:27,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:11:27,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-21 22:11:27,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420370176] [2020-08-21 22:11:27,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-21 22:11:27,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:27,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-21 22:11:27,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-21 22:11:27,489 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-21 22:11:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:30,035 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-21 22:11:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 22:11:30,036 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-21 22:11:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:30,043 INFO L225 Difference]: With dead ends: 371 [2020-08-21 22:11:30,043 INFO L226 Difference]: Without dead ends: 198 [2020-08-21 22:11:30,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-21 22:11:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-21 22:11:30,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-21 22:11:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 22:11:30,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 22:11:30,075 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 22:11:30,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:30,076 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 22:11:30,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-21 22:11:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 22:11:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 22:11:30,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:30,079 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:30,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:11:30,080 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:30,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 22:11:30,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:30,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138748757] [2020-08-21 22:11:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:11:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 22:11:31,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138748757] [2020-08-21 22:11:31,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:11:31,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 22:11:31,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283724155] [2020-08-21 22:11:31,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 22:11:31,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 22:11:31,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:11:31,255 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-21 22:11:33,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:33,338 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-21 22:11:33,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 22:11:33,339 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 22:11:33,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:33,342 INFO L225 Difference]: With dead ends: 323 [2020-08-21 22:11:33,342 INFO L226 Difference]: Without dead ends: 254 [2020-08-21 22:11:33,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 22:11:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-21 22:11:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-21 22:11:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-21 22:11:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-21 22:11:33,363 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-21 22:11:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:33,364 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-21 22:11:33,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 22:11:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-21 22:11:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 22:11:33,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:33,367 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:33,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:11:33,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:33,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 22:11:33,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:33,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925208614] [2020-08-21 22:11:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:33,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:33,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 22:11:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:33,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:34,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:34,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:35,475 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-21 22:11:36,165 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-21 22:11:36,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 22:11:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 22:11:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:37,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:11:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:11:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:38,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:11:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:38,974 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-21 22:11:38,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,410 WARN L193 SmtUtils]: Spent 3.76 s on a formula simplification. DAG size of input: 449 DAG size of output: 50