/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:14:33,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:14:33,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:14:33,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:14:33,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:14:33,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:14:33,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:14:33,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:14:33,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:14:33,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:14:33,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:14:33,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:14:33,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:14:33,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:14:33,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:14:33,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:14:33,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:14:33,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:14:33,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:14:33,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:14:33,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:14:33,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:14:33,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:14:33,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:14:33,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:14:33,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:14:33,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:14:33,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:14:33,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:14:33,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:14:33,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:14:33,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:14:33,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:14:33,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:14:33,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:14:33,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:14:33,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:14:33,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:14:33,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:14:33,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:14:33,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:14:33,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 00:14:33,707 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:14:33,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:14:33,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:14:33,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:14:33,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:14:33,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:14:33,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:14:33,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:14:33,709 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:14:33,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:14:33,710 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:14:33,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:14:33,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:14:33,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:14:33,712 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:14:33,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:14:33,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:14:33,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:14:33,888 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:14:33,888 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:14:33,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/packet_filter.i [2023-03-31 00:14:34,885 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:14:35,086 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:14:35,086 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i [2023-03-31 00:14:35,095 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c6da25c/b2b94bf78bfd4ebfb221742594dc25e8/FLAGa0486b452 [2023-03-31 00:14:35,105 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c6da25c/b2b94bf78bfd4ebfb221742594dc25e8 [2023-03-31 00:14:35,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:14:35,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:14:35,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:14:35,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:14:35,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:14:35,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1baff7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35, skipping insertion in model container [2023-03-31 00:14:35,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:14:35,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:14:35,307 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2023-03-31 00:14:35,313 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2023-03-31 00:14:35,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:14:35,323 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:14:35,361 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i[23925,23938] [2023-03-31 00:14:35,363 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/packet_filter.i[24159,24172] [2023-03-31 00:14:35,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:14:35,388 WARN L667 CHandler]: The function __VERIFIER_nondet_charp is called, but not defined or handled by StandardFunctionHandler. [2023-03-31 00:14:35,393 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:14:35,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35 WrapperNode [2023-03-31 00:14:35,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:14:35,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:14:35,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:14:35,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:14:35,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,437 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:14:35,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:14:35,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:14:35,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:14:35,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (1/1) ... [2023-03-31 00:14:35,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:14:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:14:35,465 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 00:14:35,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 00:14:35,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2023-03-31 00:14:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2023-03-31 00:14:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:14:35,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:14:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:14:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:14:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:14:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:14:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 00:14:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:14:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:14:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:14:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure send [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:14:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:14:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:14:35,778 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:14:35,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:14:36,040 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:14:36,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:14:36,045 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 00:14:36,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:14:36 BoogieIcfgContainer [2023-03-31 00:14:36,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:14:36,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:14:36,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:14:36,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:14:36,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:14:35" (1/3) ... [2023-03-31 00:14:36,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df6ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:14:36, skipping insertion in model container [2023-03-31 00:14:36,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:14:35" (2/3) ... [2023-03-31 00:14:36,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df6ac87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:14:36, skipping insertion in model container [2023-03-31 00:14:36,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:14:36" (3/3) ... [2023-03-31 00:14:36,060 INFO L112 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2023-03-31 00:14:36,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:14:36,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-03-31 00:14:36,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:14:36,127 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b53acbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:14:36,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-03-31 00:14:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 00:14:36,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-03-31 00:14:36,135 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:36,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:14:36,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:36,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2023-03-31 00:14:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:36,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901765505] [2023-03-31 00:14:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:36,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901765505] [2023-03-31 00:14:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901765505] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:14:36,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:14:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 00:14:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711149849] [2023-03-31 00:14:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:14:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 00:14:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 00:14:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:14:36,394 INFO L87 Difference]: Start difference. First operand has 62 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:14:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:36,594 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2023-03-31 00:14:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 00:14:36,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-03-31 00:14:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:36,601 INFO L225 Difference]: With dead ends: 98 [2023-03-31 00:14:36,601 INFO L226 Difference]: Without dead ends: 55 [2023-03-31 00:14:36,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 00:14:36,606 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:36,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 10 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:14:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-03-31 00:14:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-03-31 00:14:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.236842105263158) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 00:14:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2023-03-31 00:14:36,637 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 14 [2023-03-31 00:14:36,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:36,638 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2023-03-31 00:14:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:14:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2023-03-31 00:14:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-03-31 00:14:36,639 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:36,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:14:36,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:14:36,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:36,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2023-03-31 00:14:36,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478265020] [2023-03-31 00:14:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:36,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:36,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478265020] [2023-03-31 00:14:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478265020] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:14:36,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:14:36,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 00:14:36,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112569184] [2023-03-31 00:14:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:14:36,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:14:36,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:36,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:14:36,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:14:36,824 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:14:37,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:37,249 INFO L93 Difference]: Finished difference Result 91 states and 108 transitions. [2023-03-31 00:14:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 00:14:37,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-03-31 00:14:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:37,252 INFO L225 Difference]: With dead ends: 91 [2023-03-31 00:14:37,252 INFO L226 Difference]: Without dead ends: 65 [2023-03-31 00:14:37,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-03-31 00:14:37,256 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:37,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 27 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:14:37,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-03-31 00:14:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2023-03-31 00:14:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 46 states have internal predecessors, (54), 11 states have call successors, (11), 8 states have call predecessors, (11), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 00:14:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-03-31 00:14:37,279 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 15 [2023-03-31 00:14:37,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:37,280 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-03-31 00:14:37,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 00:14:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-03-31 00:14:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-03-31 00:14:37,287 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:37,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:14:37,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:14:37,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:37,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2023-03-31 00:14:37,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:37,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277179792] [2023-03-31 00:14:37,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:14:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:37,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277179792] [2023-03-31 00:14:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277179792] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:14:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:14:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-03-31 00:14:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630608202] [2023-03-31 00:14:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:14:37,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-03-31 00:14:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-03-31 00:14:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-03-31 00:14:37,599 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:14:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:38,166 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2023-03-31 00:14:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 00:14:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-03-31 00:14:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:38,167 INFO L225 Difference]: With dead ends: 96 [2023-03-31 00:14:38,167 INFO L226 Difference]: Without dead ends: 74 [2023-03-31 00:14:38,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-03-31 00:14:38,168 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 105 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 11 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 00:14:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-03-31 00:14:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2023-03-31 00:14:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 00:14:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2023-03-31 00:14:38,175 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 21 [2023-03-31 00:14:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:38,175 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2023-03-31 00:14:38,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 00:14:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2023-03-31 00:14:38,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:14:38,176 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:38,176 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:14:38,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 00:14:38,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:38,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash -983006409, now seen corresponding path program 1 times [2023-03-31 00:14:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376239411] [2023-03-31 00:14:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-03-31 00:14:38,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:38,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376239411] [2023-03-31 00:14:38,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376239411] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:14:38,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:14:38,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 00:14:38,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958537170] [2023-03-31 00:14:38,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:14:38,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 00:14:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:38,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 00:14:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:14:38,254 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:14:38,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:38,563 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2023-03-31 00:14:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 00:14:38,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-03-31 00:14:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:38,564 INFO L225 Difference]: With dead ends: 77 [2023-03-31 00:14:38,564 INFO L226 Difference]: Without dead ends: 75 [2023-03-31 00:14:38,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:14:38,565 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:38,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 5 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:14:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-03-31 00:14:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2023-03-31 00:14:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 10 states have call successors, (10), 7 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-03-31 00:14:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2023-03-31 00:14:38,572 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 24 [2023-03-31 00:14:38,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:38,572 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2023-03-31 00:14:38,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-31 00:14:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2023-03-31 00:14:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-03-31 00:14:38,573 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:38,573 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:14:38,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:14:38,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:38,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:38,573 INFO L85 PathProgramCache]: Analyzing trace with hash -983004487, now seen corresponding path program 1 times [2023-03-31 00:14:38,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:38,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298617151] [2023-03-31 00:14:38,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:38,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298617151] [2023-03-31 00:14:39,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298617151] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:39,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22585235] [2023-03-31 00:14:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:39,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:39,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:14:39,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:14:39,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:14:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:39,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 45 conjunts are in the unsatisfiable core [2023-03-31 00:14:39,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:14:39,441 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:14:39,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 00:14:39,479 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:14:39,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-03-31 00:14:39,537 WARN L861 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_139 (Array Int Int)) (v_ArrVal_135 (Array Int Int)) (|v_receive_~#packet~0.base_9| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_9| v_ArrVal_139)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_9| v_ArrVal_135)) (= (select |c_old(#valid)| |v_receive_~#packet~0.base_9|) 0))) is different from true [2023-03-31 00:14:39,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:39,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:14:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:39,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:14:39,595 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 00:14:39,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-03-31 00:14:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:39,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:14:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22585235] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:39,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:14:39,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2023-03-31 00:14:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167238631] [2023-03-31 00:14:39,772 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 00:14:39,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 00:14:39,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 00:14:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=107, Unknown=1, NotChecked=20, Total=156 [2023-03-31 00:14:39,773 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:14:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:41,227 INFO L93 Difference]: Finished difference Result 143 states and 177 transitions. [2023-03-31 00:14:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 00:14:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-03-31 00:14:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:41,229 INFO L225 Difference]: With dead ends: 143 [2023-03-31 00:14:41,229 INFO L226 Difference]: Without dead ends: 116 [2023-03-31 00:14:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=399, Unknown=3, NotChecked=42, Total=552 [2023-03-31 00:14:41,230 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 170 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:41,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 13 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 502 Invalid, 0 Unknown, 140 Unchecked, 0.9s Time] [2023-03-31 00:14:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-03-31 00:14:41,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 70. [2023-03-31 00:14:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2023-03-31 00:14:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2023-03-31 00:14:41,240 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 24 [2023-03-31 00:14:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:41,240 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2023-03-31 00:14:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-03-31 00:14:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2023-03-31 00:14:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 00:14:41,241 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:41,241 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 00:14:41,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:14:41,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:41,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:41,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -44698837, now seen corresponding path program 1 times [2023-03-31 00:14:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299352526] [2023-03-31 00:14:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 00:14:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299352526] [2023-03-31 00:14:41,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299352526] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:41,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213906006] [2023-03-31 00:14:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:41,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:41,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:14:41,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:14:41,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:14:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:42,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 45 conjunts are in the unsatisfiable core [2023-03-31 00:14:42,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:14:42,071 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-03-31 00:14:42,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-03-31 00:14:42,091 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:14:42,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-03-31 00:14:42,127 WARN L861 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_228 (Array Int Int)) (|v_receive_~#packet~0.base_19| Int) (v_ArrVal_224 (Array Int Int))) (and (= (select |c_old(#valid)| |v_receive_~#packet~0.base_19|) 0) (= (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_19| v_ArrVal_224) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_19| v_ArrVal_228)))) is different from true [2023-03-31 00:14:42,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:42,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:14:42,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:42,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:14:42,152 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 00:14:42,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-03-31 00:14:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:42,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:14:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213906006] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:42,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:14:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2023-03-31 00:14:42,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618266330] [2023-03-31 00:14:42,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 00:14:42,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-03-31 00:14:42,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-03-31 00:14:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=147, Unknown=1, NotChecked=24, Total=210 [2023-03-31 00:14:42,451 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 00:14:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:43,499 INFO L93 Difference]: Finished difference Result 130 states and 160 transitions. [2023-03-31 00:14:43,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-31 00:14:43,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2023-03-31 00:14:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:43,500 INFO L225 Difference]: With dead ends: 130 [2023-03-31 00:14:43,500 INFO L226 Difference]: Without dead ends: 108 [2023-03-31 00:14:43,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=362, Unknown=3, NotChecked=40, Total=506 [2023-03-31 00:14:43,501 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 179 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:43,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 11 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 435 Invalid, 0 Unknown, 138 Unchecked, 0.8s Time] [2023-03-31 00:14:43,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-03-31 00:14:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2023-03-31 00:14:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-03-31 00:14:43,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2023-03-31 00:14:43,509 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 30 [2023-03-31 00:14:43,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:43,509 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2023-03-31 00:14:43,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 00:14:43,509 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2023-03-31 00:14:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-03-31 00:14:43,510 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:43,510 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-03-31 00:14:43,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 00:14:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-31 00:14:43,715 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:43,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1535485560, now seen corresponding path program 1 times [2023-03-31 00:14:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:43,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849447182] [2023-03-31 00:14:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:43,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:44,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:44,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-03-31 00:14:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849447182] [2023-03-31 00:14:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849447182] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125016288] [2023-03-31 00:14:44,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:44,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:44,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:14:44,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:14:44,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:14:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:44,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 67 conjunts are in the unsatisfiable core [2023-03-31 00:14:44,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:14:45,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-03-31 00:14:45,121 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2023-03-31 00:14:45,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2023-03-31 00:14:45,163 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-03-31 00:14:45,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-03-31 00:14:45,191 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-03-31 00:14:45,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-03-31 00:14:45,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:45,238 INFO L321 Elim1Store]: treesize reduction 28, result has 58.2 percent of original size [2023-03-31 00:14:45,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 80 [2023-03-31 00:14:45,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:45,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:45,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-03-31 00:14:45,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:45,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:45,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:45,454 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:14:45,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 5 [2023-03-31 00:14:45,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:45,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:14:45,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2023-03-31 00:14:45,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:14:45,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:45,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:45,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-03-31 00:14:45,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:45,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-03-31 00:14:45,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-03-31 00:14:45,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-03-31 00:14:45,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-03-31 00:14:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:46,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:14:46,300 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2023-03-31 00:14:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 79 [2023-03-31 00:14:46,308 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:14:46,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 48 [2023-03-31 00:14:46,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-03-31 00:14:46,420 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2023-03-31 00:14:46,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 1 [2023-03-31 00:14:46,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-03-31 00:14:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125016288] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:14:46,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:14:46,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 35 [2023-03-31 00:14:46,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689239576] [2023-03-31 00:14:46,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:14:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-03-31 00:14:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-03-31 00:14:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1067, Unknown=3, NotChecked=0, Total=1190 [2023-03-31 00:14:46,557 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 35 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 10 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:14:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:48,603 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2023-03-31 00:14:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-03-31 00:14:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 10 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 30 [2023-03-31 00:14:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:48,605 INFO L225 Difference]: With dead ends: 125 [2023-03-31 00:14:48,605 INFO L226 Difference]: Without dead ends: 98 [2023-03-31 00:14:48,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=320, Invalid=2532, Unknown=10, NotChecked=0, Total=2862 [2023-03-31 00:14:48,606 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 185 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 58 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:48,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 37 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1307 Invalid, 3 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 00:14:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-03-31 00:14:48,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 77. [2023-03-31 00:14:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 59 states have internal predecessors, (69), 12 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 10 states have call successors, (12) [2023-03-31 00:14:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2023-03-31 00:14:48,616 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 30 [2023-03-31 00:14:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:48,617 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2023-03-31 00:14:48,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 28 states have internal predecessors, (55), 10 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:14:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2023-03-31 00:14:48,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-03-31 00:14:48,617 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:48,618 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-03-31 00:14:48,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-31 00:14:48,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:48,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:48,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 247753001, now seen corresponding path program 1 times [2023-03-31 00:14:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542660294] [2023-03-31 00:14:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:49,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:14:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:49,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:14:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542660294] [2023-03-31 00:14:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542660294] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:14:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869689916] [2023-03-31 00:14:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:49,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:49,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:14:49,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:14:49,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-31 00:14:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:49,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 68 conjunts are in the unsatisfiable core [2023-03-31 00:14:49,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:14:50,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-03-31 00:14:50,111 INFO L321 Elim1Store]: treesize reduction 40, result has 42.9 percent of original size [2023-03-31 00:14:50,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 64 [2023-03-31 00:14:50,137 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-03-31 00:14:50,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-03-31 00:14:50,162 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-03-31 00:14:50,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2023-03-31 00:14:50,193 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2023-03-31 00:14:50,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 60 [2023-03-31 00:14:50,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:50,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:50,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-03-31 00:14:50,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-03-31 00:14:50,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:50,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:14:50,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 9 [2023-03-31 00:14:50,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:14:50,347 INFO L173 IndexEqualityManager]: detected equality via solver [2023-03-31 00:14:50,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 5 [2023-03-31 00:14:50,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:50,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:14:50,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:50,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:50,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-03-31 00:14:50,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:50,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:14:50,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-03-31 00:14:50,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-03-31 00:14:50,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-03-31 00:14:50,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2023-03-31 00:14:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:50,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:14:51,185 INFO L321 Elim1Store]: treesize reduction 41, result has 62.0 percent of original size [2023-03-31 00:14:51,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 79 [2023-03-31 00:14:51,195 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:14:51,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 48 [2023-03-31 00:14:51,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-03-31 00:14:51,302 INFO L321 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2023-03-31 00:14:51,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 57 treesize of output 1 [2023-03-31 00:14:51,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-03-31 00:14:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:14:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869689916] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:14:51,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:14:51,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 13] total 33 [2023-03-31 00:14:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392468401] [2023-03-31 00:14:51,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:14:51,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-03-31 00:14:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:14:51,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-03-31 00:14:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2023-03-31 00:14:51,431 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand has 33 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:14:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:14:53,621 INFO L93 Difference]: Finished difference Result 111 states and 137 transitions. [2023-03-31 00:14:53,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-03-31 00:14:53,622 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 31 [2023-03-31 00:14:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:14:53,623 INFO L225 Difference]: With dead ends: 111 [2023-03-31 00:14:53,623 INFO L226 Difference]: Without dead ends: 109 [2023-03-31 00:14:53,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=320, Invalid=2230, Unknown=0, NotChecked=0, Total=2550 [2023-03-31 00:14:53,624 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-03-31 00:14:53,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 31 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1346 Invalid, 3 Unknown, 0 Unchecked, 1.4s Time] [2023-03-31 00:14:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-03-31 00:14:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 87. [2023-03-31 00:14:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.25) internal successors, (80), 68 states have internal predecessors, (80), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (14), 9 states have call predecessors, (14), 11 states have call successors, (14) [2023-03-31 00:14:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2023-03-31 00:14:53,636 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 31 [2023-03-31 00:14:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:14:53,636 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2023-03-31 00:14:53,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:14:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2023-03-31 00:14:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-03-31 00:14:53,637 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:14:53,637 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-03-31 00:14:53,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-31 00:14:53,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:14:53,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:14:53,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:14:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1413952791, now seen corresponding path program 1 times [2023-03-31 00:14:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:14:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108057125] [2023-03-31 00:14:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:14:53,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:14:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:14:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-31 00:14:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:14:54,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-03-31 00:14:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:15:19,760 WARN L223 SmtUtils]: Spent 10.76s on a formula simplification that was a NOOP. DAG size: 152 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-03-31 00:15:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:15:32,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:15:32,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108057125] [2023-03-31 00:15:32,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108057125] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:15:32,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581733794] [2023-03-31 00:15:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:15:32,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:15:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:15:32,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 00:15:32,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-31 00:15:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:15:33,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 100 conjunts are in the unsatisfiable core [2023-03-31 00:15:33,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:15:33,086 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:15:33,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-03-31 00:15:33,130 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:15:33,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-03-31 00:15:33,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:15:33,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:15:33,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:15:33,185 WARN L861 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1169 Int) (|v_receive_~#packet~0.base_41| Int) (v_ArrVal_1166 (Array Int Int)) (v_ArrVal_1163 (Array Int Int))) (and (= |c_#valid| (store |c_old(#valid)| |v_receive_~#packet~0.base_41| v_ArrVal_1169)) (= 0 (select |c_old(#valid)| |v_receive_~#packet~0.base_41|)) (= (store |c_old(#memory_$Pointer$.base)| |v_receive_~#packet~0.base_41| v_ArrVal_1166) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |v_receive_~#packet~0.base_41| v_ArrVal_1163)) (= (select (select |c_#memory_$Pointer$.offset| |v_receive_~#packet~0.base_41|) 8) |c_receive_#res.payload.offset|))) is different from true [2023-03-31 00:15:33,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:15:33,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-03-31 00:15:33,268 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:15:33,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-03-31 00:15:33,509 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-03-31 00:15:33,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2023-03-31 00:15:33,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:15:33,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-03-31 00:15:33,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2023-03-31 00:15:33,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2023-03-31 00:15:33,547 WARN L861 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1181 (Array Int Int)) (v_arrayElimArr_15 (Array Int Int)) (|v_append_to_queue_~#p.base_29| Int) (v_arrayElimArr_16 (Array Int Int)) (v_ArrVal_1177 (Array Int Int)) (v_ArrVal_1175 (Array Int Int)) (append_to_queue_~node~0.base Int) (v_ArrVal_1174 (Array Int Int))) (and (= (select |c_old(#valid)| |v_append_to_queue_~#p.base_29|) 0) (= |c_append_to_queue_#in~p.payload.offset| (select v_arrayElimArr_16 8)) (= (select v_arrayElimArr_15 8) |c_append_to_queue_#in~p.payload.base|) (= |c_#memory_$Pointer$.offset| (store (store (store |c_old(#memory_$Pointer$.offset)| |v_append_to_queue_~#p.base_29| v_arrayElimArr_16) append_to_queue_~node~0.base v_ArrVal_1177) |c_append_to_queue_#in~q.base| v_ArrVal_1175)) (< append_to_queue_~node~0.base |c_#StackHeapBarrier|) (= (store (store (store |c_old(#memory_$Pointer$.base)| |v_append_to_queue_~#p.base_29| v_arrayElimArr_15) append_to_queue_~node~0.base v_ArrVal_1181) |c_append_to_queue_#in~q.base| v_ArrVal_1174) |c_#memory_$Pointer$.base|))) is different from true [2023-03-31 00:15:33,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,656 INFO L321 Elim1Store]: treesize reduction 111, result has 35.1 percent of original size [2023-03-31 00:15:33,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 93 [2023-03-31 00:15:33,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,710 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-03-31 00:15:33,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 61 [2023-03-31 00:15:33,731 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-03-31 00:15:33,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-03-31 00:15:33,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:15:33,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:15:33,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:15:33,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-03-31 00:15:33,846 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-03-31 00:15:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:33,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:33,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:15:33,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:33,950 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:33,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:33,965 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:33,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:33,981 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:33,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:34,017 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:34,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:34,034 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:34,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:34,053 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-03-31 00:15:34,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-03-31 00:15:34,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-03-31 00:15:34,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-03-31 00:15:34,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2023-03-31 00:15:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:15:34,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:15:34,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:15:34,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 43 [2023-03-31 00:15:34,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:15:34,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2023-03-31 00:15:34,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 00:15:34,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-03-31 00:15:35,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581733794] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:15:35,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:15:35,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 19 [2023-03-31 00:15:35,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564911741] [2023-03-31 00:15:35,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 00:15:35,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-03-31 00:15:35,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:15:35,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-03-31 00:15:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=248, Unknown=2, NotChecked=66, Total=380 [2023-03-31 00:15:35,892 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 19 states, 16 states have (on average 2.0) internal successors, (32), 14 states have internal predecessors, (32), 5 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5)