/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:52:08,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:52:08,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:52:08,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:52:08,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:52:08,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:52:08,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:52:08,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:52:08,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:52:08,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:52:08,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:52:08,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:52:08,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:52:08,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:52:08,315 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:52:08,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:52:08,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:52:08,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:52:08,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:52:08,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:52:08,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:52:08,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:52:08,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:52:08,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:52:08,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:52:08,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:52:08,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:52:08,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:52:08,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:52:08,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:52:08,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:52:08,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:52:08,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:52:08,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:52:08,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:52:08,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:52:08,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:52:08,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:52:08,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:52:08,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:52:08,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:52:08,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:52:08,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:52:08,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:52:08,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:52:08,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:52:08,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:52:08,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:52:08,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:52:08,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:52:08,449 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:52:08,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:52:08,450 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:52:08,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:52:08,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:52:08,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:52:08,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:52:08,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:52:08,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:52:08,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:52:08,452 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:52:08,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:52:08,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:52:08,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:52:08,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:52:08,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:52:08,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:52:08,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:52:08,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:52:08,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:52:08,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:52:08,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:52:08,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:52:08,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:52:08,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:52:08,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:52:08,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:52:08,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:52:08,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:52:08,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:52:08,919 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:52:08,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-10-16 14:52:09,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ff0e4c0/0067ce33819845f1b7b422060f5b82c3/FLAG962d6bf07 [2022-10-16 14:52:09,907 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:52:09,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2022-10-16 14:52:09,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ff0e4c0/0067ce33819845f1b7b422060f5b82c3/FLAG962d6bf07 [2022-10-16 14:52:10,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ff0e4c0/0067ce33819845f1b7b422060f5b82c3 [2022-10-16 14:52:10,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:52:10,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:52:10,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:52:10,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:52:10,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:52:10,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:10,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9017d48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10, skipping insertion in model container [2022-10-16 14:52:10,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:10,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:52:10,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:52:10,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-10-16 14:52:10,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:52:10,839 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:52:10,898 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2022-10-16 14:52:10,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:52:10,992 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:52:10,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10 WrapperNode [2022-10-16 14:52:10,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:52:10,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:52:10,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:52:10,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:52:11,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,074 INFO L138 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 224 [2022-10-16 14:52:11,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:52:11,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:52:11,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:52:11,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:52:11,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:52:11,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:52:11,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:52:11,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:52:11,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (1/1) ... [2022-10-16 14:52:11,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:52:11,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:52:11,207 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) [2022-10-16 14:52:11,226 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 [2022-10-16 14:52:11,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:52:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-16 14:52:11,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-16 14:52:11,283 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2022-10-16 14:52:11,284 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2022-10-16 14:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2022-10-16 14:52:11,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2022-10-16 14:52:11,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2022-10-16 14:52:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2022-10-16 14:52:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2022-10-16 14:52:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2022-10-16 14:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2022-10-16 14:52:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2022-10-16 14:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2022-10-16 14:52:11,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2022-10-16 14:52:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2022-10-16 14:52:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2022-10-16 14:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:52:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2022-10-16 14:52:11,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2022-10-16 14:52:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-10-16 14:52:11,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:52:11,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:52:11,569 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:52:11,572 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:52:12,339 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:52:12,355 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:52:12,355 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 14:52:12,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:52:12 BoogieIcfgContainer [2022-10-16 14:52:12,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:52:12,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:52:12,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:52:12,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:52:12,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:52:10" (1/3) ... [2022-10-16 14:52:12,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d786b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:52:12, skipping insertion in model container [2022-10-16 14:52:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:52:10" (2/3) ... [2022-10-16 14:52:12,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d786b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:52:12, skipping insertion in model container [2022-10-16 14:52:12,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:52:12" (3/3) ... [2022-10-16 14:52:12,372 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2022-10-16 14:52:12,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:52:12,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 14:52:12,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:52:12,499 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=FINITE_AUTOMATA, 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;@556a400f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:52:12,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 14:52:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 96 states have internal predecessors, (124), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-10-16 14:52:12,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 14:52:12,521 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:12,522 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:12,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1091541498, now seen corresponding path program 1 times [2022-10-16 14:52:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:12,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135383995] [2022-10-16 14:52:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-16 14:52:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:14,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135383995] [2022-10-16 14:52:14,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135383995] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:14,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:14,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 14:52:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642618676] [2022-10-16 14:52:14,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 14:52:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:14,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 14:52:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:52:14,415 INFO L87 Difference]: Start difference. First operand has 135 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 96 states have internal predecessors, (124), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:15,893 INFO L93 Difference]: Finished difference Result 329 states and 479 transitions. [2022-10-16 14:52:15,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:52:15,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-10-16 14:52:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:15,913 INFO L225 Difference]: With dead ends: 329 [2022-10-16 14:52:15,913 INFO L226 Difference]: Without dead ends: 180 [2022-10-16 14:52:15,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:52:15,925 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 148 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:15,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 839 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 14:52:15,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-10-16 14:52:16,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2022-10-16 14:52:16,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 101 states have internal predecessors, (129), 31 states have call successors, (31), 11 states have call predecessors, (31), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-10-16 14:52:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-10-16 14:52:16,013 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 27 [2022-10-16 14:52:16,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:16,014 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-10-16 14:52:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-10-16 14:52:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:52:16,018 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:16,018 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:16,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:52:16,019 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:16,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2039208418, now seen corresponding path program 1 times [2022-10-16 14:52:16,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:16,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547366152] [2022-10-16 14:52:16,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 14:52:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:16,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:16,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547366152] [2022-10-16 14:52:16,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547366152] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:16,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:16,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 14:52:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648411736] [2022-10-16 14:52:16,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 14:52:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 14:52:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:52:16,871 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:18,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:18,059 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2022-10-16 14:52:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:52:18,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-10-16 14:52:18,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:18,064 INFO L225 Difference]: With dead ends: 312 [2022-10-16 14:52:18,064 INFO L226 Difference]: Without dead ends: 186 [2022-10-16 14:52:18,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-10-16 14:52:18,068 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 117 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 817 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-16 14:52:18,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-16 14:52:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 148. [2022-10-16 14:52:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 108 states have internal predecessors, (135), 33 states have call successors, (33), 12 states have call predecessors, (33), 10 states have return successors, (34), 27 states have call predecessors, (34), 27 states have call successors, (34) [2022-10-16 14:52:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2022-10-16 14:52:18,096 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 28 [2022-10-16 14:52:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:18,096 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2022-10-16 14:52:18,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:18,097 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2022-10-16 14:52:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:52:18,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:18,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:18,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:52:18,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:18,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:18,100 INFO L85 PathProgramCache]: Analyzing trace with hash -778142200, now seen corresponding path program 1 times [2022-10-16 14:52:18,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:18,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797812994] [2022-10-16 14:52:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-16 14:52:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797812994] [2022-10-16 14:52:18,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797812994] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:18,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:18,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 14:52:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750743238] [2022-10-16 14:52:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 14:52:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:18,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 14:52:18,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:52:18,937 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:20,371 INFO L93 Difference]: Finished difference Result 308 states and 423 transitions. [2022-10-16 14:52:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:52:20,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-10-16 14:52:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:20,375 INFO L225 Difference]: With dead ends: 308 [2022-10-16 14:52:20,375 INFO L226 Difference]: Without dead ends: 182 [2022-10-16 14:52:20,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:52:20,378 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 102 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:20,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1022 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 14:52:20,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-16 14:52:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 144. [2022-10-16 14:52:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 100 states have (on average 1.31) internal successors, (131), 105 states have internal predecessors, (131), 32 states have call successors, (32), 11 states have call predecessors, (32), 10 states have return successors, (34), 27 states have call predecessors, (34), 27 states have call successors, (34) [2022-10-16 14:52:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 197 transitions. [2022-10-16 14:52:20,399 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 197 transitions. Word has length 28 [2022-10-16 14:52:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:20,400 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 197 transitions. [2022-10-16 14:52:20,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:52:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 197 transitions. [2022-10-16 14:52:20,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-16 14:52:20,404 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:20,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:20,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:52:20,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:20,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:20,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1429507979, now seen corresponding path program 1 times [2022-10-16 14:52:20,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:20,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923672525] [2022-10-16 14:52:20,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:20,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 14:52:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-16 14:52:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:20,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:20,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923672525] [2022-10-16 14:52:20,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923672525] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:20,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:20,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:52:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865912502] [2022-10-16 14:52:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:20,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:52:20,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:20,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:52:20,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:52:20,695 INFO L87 Difference]: Start difference. First operand 144 states and 197 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:21,271 INFO L93 Difference]: Finished difference Result 310 states and 447 transitions. [2022-10-16 14:52:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 14:52:21,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-10-16 14:52:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:21,281 INFO L225 Difference]: With dead ends: 310 [2022-10-16 14:52:21,282 INFO L226 Difference]: Without dead ends: 188 [2022-10-16 14:52:21,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-10-16 14:52:21,290 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 164 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:21,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 539 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 14:52:21,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-16 14:52:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2022-10-16 14:52:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 109 states have internal predecessors, (137), 32 states have call successors, (32), 12 states have call predecessors, (32), 11 states have return successors, (31), 27 states have call predecessors, (31), 27 states have call successors, (31) [2022-10-16 14:52:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2022-10-16 14:52:21,345 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 43 [2022-10-16 14:52:21,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:21,345 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2022-10-16 14:52:21,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2022-10-16 14:52:21,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 14:52:21,354 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:21,354 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:21,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:52:21,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:21,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:21,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1588625705, now seen corresponding path program 1 times [2022-10-16 14:52:21,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:21,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963106264] [2022-10-16 14:52:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:22,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 14:52:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 14:52:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:22,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:22,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:22,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963106264] [2022-10-16 14:52:22,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963106264] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:22,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:22,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 14:52:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297641716] [2022-10-16 14:52:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 14:52:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 14:52:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:52:22,165 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:23,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:23,506 INFO L93 Difference]: Finished difference Result 346 states and 501 transitions. [2022-10-16 14:52:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:52:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-10-16 14:52:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:23,511 INFO L225 Difference]: With dead ends: 346 [2022-10-16 14:52:23,511 INFO L226 Difference]: Without dead ends: 219 [2022-10-16 14:52:23,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:52:23,514 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 233 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:23,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 966 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 14:52:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-10-16 14:52:23,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 206. [2022-10-16 14:52:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 146 states have (on average 1.2876712328767124) internal successors, (188), 152 states have internal predecessors, (188), 39 states have call successors, (39), 14 states have call predecessors, (39), 19 states have return successors, (59), 39 states have call predecessors, (59), 34 states have call successors, (59) [2022-10-16 14:52:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 286 transitions. [2022-10-16 14:52:23,541 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 286 transitions. Word has length 44 [2022-10-16 14:52:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:23,542 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 286 transitions. [2022-10-16 14:52:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 5 states have internal predecessors, (30), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 286 transitions. [2022-10-16 14:52:23,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 14:52:23,546 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:23,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:23,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 14:52:23,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:23,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1888693141, now seen corresponding path program 1 times [2022-10-16 14:52:23,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:23,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455875583] [2022-10-16 14:52:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:23,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 14:52:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 14:52:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 14:52:37,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455875583] [2022-10-16 14:52:37,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455875583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:37,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-10-16 14:52:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416825721] [2022-10-16 14:52:37,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:37,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 14:52:37,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 14:52:37,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-10-16 14:52:37,110 INFO L87 Difference]: Start difference. First operand 206 states and 286 transitions. Second operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:52:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:42,991 INFO L93 Difference]: Finished difference Result 520 states and 791 transitions. [2022-10-16 14:52:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-10-16 14:52:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2022-10-16 14:52:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:42,997 INFO L225 Difference]: With dead ends: 520 [2022-10-16 14:52:42,997 INFO L226 Difference]: Without dead ends: 388 [2022-10-16 14:52:43,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 14:52:43,002 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 578 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:43,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1765 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-16 14:52:43,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-10-16 14:52:43,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 265. [2022-10-16 14:52:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 190 states have (on average 1.305263157894737) internal successors, (248), 196 states have internal predecessors, (248), 52 states have call successors, (52), 25 states have call predecessors, (52), 21 states have return successors, (63), 43 states have call predecessors, (63), 39 states have call successors, (63) [2022-10-16 14:52:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 363 transitions. [2022-10-16 14:52:43,053 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 363 transitions. Word has length 44 [2022-10-16 14:52:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:43,053 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 363 transitions. [2022-10-16 14:52:43,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 14:52:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 363 transitions. [2022-10-16 14:52:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 14:52:43,056 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:43,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:43,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 14:52:43,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash 558403749, now seen corresponding path program 1 times [2022-10-16 14:52:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104342951] [2022-10-16 14:52:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 14:52:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 14:52:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 14:52:43,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:43,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104342951] [2022-10-16 14:52:43,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104342951] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:52:43,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:52:43,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 14:52:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815405180] [2022-10-16 14:52:43,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:52:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 14:52:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:52:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 14:52:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:52:43,834 INFO L87 Difference]: Start difference. First operand 265 states and 363 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:52:45,322 INFO L93 Difference]: Finished difference Result 500 states and 714 transitions. [2022-10-16 14:52:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 14:52:45,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-10-16 14:52:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:52:45,327 INFO L225 Difference]: With dead ends: 500 [2022-10-16 14:52:45,328 INFO L226 Difference]: Without dead ends: 316 [2022-10-16 14:52:45,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-16 14:52:45,331 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 124 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 14:52:45,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1040 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-16 14:52:45,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-10-16 14:52:45,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 277. [2022-10-16 14:52:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 199 states have (on average 1.3015075376884422) internal successors, (259), 205 states have internal predecessors, (259), 54 states have call successors, (54), 26 states have call predecessors, (54), 22 states have return successors, (67), 45 states have call predecessors, (67), 41 states have call successors, (67) [2022-10-16 14:52:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 380 transitions. [2022-10-16 14:52:45,376 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 380 transitions. Word has length 45 [2022-10-16 14:52:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:52:45,380 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 380 transitions. [2022-10-16 14:52:45,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 5 states have internal predecessors, (31), 4 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 14:52:45,380 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 380 transitions. [2022-10-16 14:52:45,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 14:52:45,383 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:52:45,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:52:45,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 14:52:45,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [message_sendErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, message_sendErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-10-16 14:52:45,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:52:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2036020427, now seen corresponding path program 1 times [2022-10-16 14:52:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:52:45,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993292397] [2022-10-16 14:52:45,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:45,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:52:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:52:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-16 14:52:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-16 14:52:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 14:52:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:52:50,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993292397] [2022-10-16 14:52:50,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993292397] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:52:50,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653477641] [2022-10-16 14:52:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:52:50,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:52:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:52:50,525 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) [2022-10-16 14:52:50,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:52:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:52:50,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 146 conjunts are in the unsatisfiable core [2022-10-16 14:52:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:52:50,991 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-10-16 14:52:50,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-16 14:52:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 14:52:51,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-10-16 14:52:51,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 57 treesize of output 46 [2022-10-16 14:52:51,180 INFO L356 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2022-10-16 14:52:51,183 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-10-16 14:52:51,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:52:51,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:52:51,400 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimArr_1 input size 50 context size 50 output size 50 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-10-16 14:52:51,405 INFO L158 Benchmark]: Toolchain (without parser) took 41332.25ms. Allocated memory was 151.0MB in the beginning and 521.1MB in the end (delta: 370.1MB). Free memory was 123.8MB in the beginning and 190.8MB in the end (delta: -67.0MB). Peak memory consumption was 304.2MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,406 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 14:52:51,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 912.24ms. Allocated memory is still 151.0MB. Free memory was 123.6MB in the beginning and 129.1MB in the end (delta: -5.5MB). Peak memory consumption was 28.2MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.73ms. Allocated memory is still 151.0MB. Free memory was 129.1MB in the beginning and 126.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,407 INFO L158 Benchmark]: Boogie Preprocessor took 61.79ms. Allocated memory is still 151.0MB. Free memory was 126.5MB in the beginning and 123.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,407 INFO L158 Benchmark]: RCFGBuilder took 1222.32ms. Allocated memory is still 151.0MB. Free memory was 123.4MB in the beginning and 79.3MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,408 INFO L158 Benchmark]: TraceAbstraction took 39041.16ms. Allocated memory was 151.0MB in the beginning and 521.1MB in the end (delta: 370.1MB). Free memory was 78.8MB in the beginning and 190.8MB in the end (delta: -112.0MB). Peak memory consumption was 258.2MB. Max. memory is 8.0GB. [2022-10-16 14:52:51,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 121.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 912.24ms. Allocated memory is still 151.0MB. Free memory was 123.6MB in the beginning and 129.1MB in the end (delta: -5.5MB). Peak memory consumption was 28.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 80.73ms. Allocated memory is still 151.0MB. Free memory was 129.1MB in the beginning and 126.5MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.79ms. Allocated memory is still 151.0MB. Free memory was 126.5MB in the beginning and 123.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1222.32ms. Allocated memory is still 151.0MB. Free memory was 123.4MB in the beginning and 79.3MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * TraceAbstraction took 39041.16ms. Allocated memory was 151.0MB in the beginning and 521.1MB in the end (delta: 370.1MB). Free memory was 78.8MB in the beginning and 190.8MB in the end (delta: -112.0MB). Peak memory consumption was 258.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_1 input size 50 context size 50 output size 50 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_1 input size 50 context size 50 output size 50: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-10-16 14:52:51,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...