./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 00:41:03,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 00:41:03,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 00:41:03,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 00:41:03,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 00:41:03,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 00:41:03,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 00:41:03,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 00:41:03,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 00:41:03,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 00:41:03,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 00:41:03,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 00:41:03,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 00:41:03,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 00:41:03,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 00:41:03,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 00:41:03,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 00:41:03,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 00:41:03,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 00:41:03,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 00:41:03,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 00:41:03,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 00:41:03,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 00:41:03,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 00:41:03,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 00:41:03,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 00:41:03,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 00:41:03,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 00:41:03,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 00:41:03,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 00:41:03,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 00:41:03,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 00:41:03,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 00:41:03,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 00:41:03,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 00:41:03,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 00:41:03,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 00:41:03,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 00:41:03,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 00:41:03,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 00:41:03,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 00:41:03,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 00:41:03,482 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 00:41:03,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 00:41:03,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 00:41:03,483 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 00:41:03,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 00:41:03,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 00:41:03,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 00:41:03,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 00:41:03,484 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 00:41:03,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 00:41:03,485 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 00:41:03,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 00:41:03,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 00:41:03,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 00:41:03,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 00:41:03,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 00:41:03,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 00:41:03,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 00:41:03,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 00:41:03,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 00:41:03,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 00:41:03,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 00:41:03,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 00:41:03,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 00:41:03,489 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 00:41:03,489 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c5f43b3e9ff1d4598a5a525fe9e716f863331c4c517b4b8adb0491943243286 [2023-02-18 00:41:03,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 00:41:03,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 00:41:03,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 00:41:03,711 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 00:41:03,711 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 00:41:03,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2023-02-18 00:41:04,759 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 00:41:04,879 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 00:41:04,880 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c [2023-02-18 00:41:04,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3db100b07/f7b7163c8966411abcbf45c718b43d5f/FLAG20adcdec2 [2023-02-18 00:41:04,892 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3db100b07/f7b7163c8966411abcbf45c718b43d5f [2023-02-18 00:41:04,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 00:41:04,894 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 00:41:04,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 00:41:04,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 00:41:04,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 00:41:04,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:41:04" (1/1) ... [2023-02-18 00:41:04,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57e9a100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:04, skipping insertion in model container [2023-02-18 00:41:04,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 12:41:04" (1/1) ... [2023-02-18 00:41:04,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 00:41:04,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 00:41:04,993 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2023-02-18 00:41:05,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 00:41:05,012 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 00:41:05,021 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_10.c[319,332] [2023-02-18 00:41:05,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 00:41:05,031 INFO L208 MainTranslator]: Completed translation [2023-02-18 00:41:05,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05 WrapperNode [2023-02-18 00:41:05,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 00:41:05,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 00:41:05,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 00:41:05,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 00:41:05,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,052 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-02-18 00:41:05,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 00:41:05,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 00:41:05,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 00:41:05,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 00:41:05,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,073 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 00:41:05,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 00:41:05,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 00:41:05,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 00:41:05,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (1/1) ... [2023-02-18 00:41:05,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 00:41:05,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:05,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 00:41:05,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 00:41:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 00:41:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 00:41:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 00:41:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 00:41:05,168 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 00:41:05,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 00:41:05,273 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 00:41:05,277 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 00:41:05,277 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 00:41:05,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:41:05 BoogieIcfgContainer [2023-02-18 00:41:05,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 00:41:05,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 00:41:05,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 00:41:05,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 00:41:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 12:41:04" (1/3) ... [2023-02-18 00:41:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e023c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:41:05, skipping insertion in model container [2023-02-18 00:41:05,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 12:41:05" (2/3) ... [2023-02-18 00:41:05,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e023c81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 12:41:05, skipping insertion in model container [2023-02-18 00:41:05,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 12:41:05" (3/3) ... [2023-02-18 00:41:05,283 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_10.c [2023-02-18 00:41:05,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 00:41:05,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 00:41:05,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 00:41:05,364 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b944235, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 00:41:05,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 00:41:05,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 00:41:05,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:05,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 00:41:05,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-18 00:41:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:05,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471814317] [2023-02-18 00:41:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:05,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:05,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471814317] [2023-02-18 00:41:05,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471814317] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 00:41:05,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 00:41:05,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 00:41:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139010156] [2023-02-18 00:41:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 00:41:05,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 00:41:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 00:41:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 00:41:05,608 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:05,616 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-18 00:41:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 00:41:05,618 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 00:41:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:05,622 INFO L225 Difference]: With dead ends: 21 [2023-02-18 00:41:05,622 INFO L226 Difference]: Without dead ends: 9 [2023-02-18 00:41:05,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 00:41:05,626 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:05,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 00:41:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-18 00:41:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-18 00:41:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-18 00:41:05,644 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-18 00:41:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:05,644 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-18 00:41:05,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-18 00:41:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 00:41:05,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:05,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 00:41:05,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 00:41:05,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:05,646 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-18 00:41:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:05,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291892566] [2023-02-18 00:41:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:05,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:05,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:05,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291892566] [2023-02-18 00:41:05,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291892566] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 00:41:05,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 00:41:05,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 00:41:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946016365] [2023-02-18 00:41:05,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 00:41:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 00:41:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 00:41:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 00:41:05,801 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:05,830 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2023-02-18 00:41:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 00:41:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 00:41:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:05,831 INFO L225 Difference]: With dead ends: 19 [2023-02-18 00:41:05,831 INFO L226 Difference]: Without dead ends: 12 [2023-02-18 00:41:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 00:41:05,832 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:05,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 00:41:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-18 00:41:05,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-02-18 00:41:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-02-18 00:41:05,835 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2023-02-18 00:41:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:05,835 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-02-18 00:41:05,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-02-18 00:41:05,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 00:41:05,836 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:05,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:05,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 00:41:05,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:05,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:05,837 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-18 00:41:05,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:05,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171279330] [2023-02-18 00:41:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:05,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:05,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171279330] [2023-02-18 00:41:05,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171279330] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:05,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516328985] [2023-02-18 00:41:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:05,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:05,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:05,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 00:41:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:06,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 00:41:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:06,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:06,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516328985] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:06,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:06,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 9 [2023-02-18 00:41:06,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801541190] [2023-02-18 00:41:06,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:06,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 00:41:06,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:06,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 00:41:06,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-02-18 00:41:06,094 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:06,143 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2023-02-18 00:41:06,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 00:41:06,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 00:41:06,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:06,144 INFO L225 Difference]: With dead ends: 26 [2023-02-18 00:41:06,145 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 00:41:06,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-02-18 00:41:06,146 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:06,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 12 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 00:41:06,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 00:41:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 00:41:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:06,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2023-02-18 00:41:06,150 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2023-02-18 00:41:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:06,150 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-02-18 00:41:06,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:06,151 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2023-02-18 00:41:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 00:41:06,151 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:06,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:06,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 00:41:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:06,357 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-18 00:41:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:06,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116674288] [2023-02-18 00:41:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:06,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:06,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116674288] [2023-02-18 00:41:06,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116674288] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:06,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082994422] [2023-02-18 00:41:06,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 00:41:06,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:06,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:06,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:06,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 00:41:06,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 00:41:06,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 00:41:06,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 00:41:06,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:06,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:06,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082994422] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:06,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:06,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2023-02-18 00:41:06,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957737073] [2023-02-18 00:41:06,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:06,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 00:41:06,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:06,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 00:41:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-02-18 00:41:06,693 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:07,368 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2023-02-18 00:41:07,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 00:41:07,368 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 00:41:07,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:07,369 INFO L225 Difference]: With dead ends: 57 [2023-02-18 00:41:07,369 INFO L226 Difference]: Without dead ends: 38 [2023-02-18 00:41:07,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 00:41:07,371 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:07,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 25 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 00:41:07,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-18 00:41:07,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-02-18 00:41:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-18 00:41:07,382 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 18 [2023-02-18 00:41:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:07,382 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-18 00:41:07,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-18 00:41:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 00:41:07,383 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:07,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:07,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 00:41:07,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-18 00:41:07,589 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1843997196, now seen corresponding path program 1 times [2023-02-18 00:41:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686209677] [2023-02-18 00:41:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:07,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686209677] [2023-02-18 00:41:07,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686209677] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:07,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108645189] [2023-02-18 00:41:07,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:07,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:07,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:07,678 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:07,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 00:41:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:07,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 00:41:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:07,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:07,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108645189] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:07,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:07,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-18 00:41:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778527543] [2023-02-18 00:41:07,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 00:41:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 00:41:07,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-02-18 00:41:07,809 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:08,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:08,057 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2023-02-18 00:41:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 00:41:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-18 00:41:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:08,059 INFO L225 Difference]: With dead ends: 60 [2023-02-18 00:41:08,060 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 00:41:08,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=230, Unknown=0, NotChecked=0, Total=380 [2023-02-18 00:41:08,060 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:08,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 00:41:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 00:41:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2023-02-18 00:41:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2023-02-18 00:41:08,069 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 24 [2023-02-18 00:41:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:08,069 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2023-02-18 00:41:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:08,070 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2023-02-18 00:41:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 00:41:08,071 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:08,071 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:08,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 00:41:08,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:08,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -51731342, now seen corresponding path program 3 times [2023-02-18 00:41:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:08,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022501137] [2023-02-18 00:41:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:08,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:08,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:08,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022501137] [2023-02-18 00:41:08,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022501137] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:08,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311773238] [2023-02-18 00:41:08,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 00:41:08,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:08,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:08,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:08,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 00:41:08,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 00:41:08,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 00:41:08,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 00:41:08,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-02-18 00:41:08,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-02-18 00:41:08,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311773238] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:08,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:08,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 21 [2023-02-18 00:41:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956647485] [2023-02-18 00:41:08,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:08,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 00:41:08,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 00:41:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-02-18 00:41:08,689 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:08,997 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-02-18 00:41:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 00:41:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 00:41:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:08,998 INFO L225 Difference]: With dead ends: 57 [2023-02-18 00:41:08,998 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 00:41:08,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=293, Invalid=829, Unknown=0, NotChecked=0, Total=1122 [2023-02-18 00:41:08,999 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 59 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:08,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 17 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 00:41:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 00:41:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-02-18 00:41:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0784313725490196) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2023-02-18 00:41:09,005 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 36 [2023-02-18 00:41:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:09,006 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2023-02-18 00:41:09,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:09,006 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2023-02-18 00:41:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-18 00:41:09,006 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:09,006 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:09,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 00:41:09,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:09,214 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash -749374373, now seen corresponding path program 2 times [2023-02-18 00:41:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:09,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115986778] [2023-02-18 00:41:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 101 proven. 222 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 00:41:09,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:09,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115986778] [2023-02-18 00:41:09,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115986778] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:09,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374258138] [2023-02-18 00:41:09,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 00:41:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:09,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:09,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:09,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 00:41:09,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 00:41:09,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 00:41:09,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 00:41:09,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 29 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 00:41:09,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374258138] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:09,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:09,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 33 [2023-02-18 00:41:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54915241] [2023-02-18 00:41:09,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 00:41:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 00:41:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=740, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 00:41:09,936 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:14,837 INFO L93 Difference]: Finished difference Result 121 states and 145 transitions. [2023-02-18 00:41:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 00:41:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-02-18 00:41:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:14,838 INFO L225 Difference]: With dead ends: 121 [2023-02-18 00:41:14,838 INFO L226 Difference]: Without dead ends: 106 [2023-02-18 00:41:14,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 72 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=778, Invalid=1384, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 00:41:14,840 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:14,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 61 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-18 00:41:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-18 00:41:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-18 00:41:14,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 105 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 109 transitions. [2023-02-18 00:41:14,858 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 109 transitions. Word has length 51 [2023-02-18 00:41:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:14,859 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 109 transitions. [2023-02-18 00:41:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0606060606060606) internal successors, (101), 33 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 109 transitions. [2023-02-18 00:41:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-02-18 00:41:14,863 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:14,863 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 30, 3, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:14,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 00:41:15,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:15,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:15,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:15,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1404636997, now seen corresponding path program 3 times [2023-02-18 00:41:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:15,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170736351] [2023-02-18 00:41:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:15,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 245 proven. 1365 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 00:41:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170736351] [2023-02-18 00:41:15,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170736351] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:15,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891397220] [2023-02-18 00:41:15,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 00:41:15,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:15,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:15,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:15,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 00:41:15,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-18 00:41:15,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 00:41:15,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 00:41:15,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 326 proven. 15 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2023-02-18 00:41:16,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 341 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2023-02-18 00:41:22,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891397220] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:22,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:22,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 11] total 49 [2023-02-18 00:41:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140183075] [2023-02-18 00:41:22,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-02-18 00:41:22,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-02-18 00:41:22,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2006, Unknown=0, NotChecked=0, Total=2352 [2023-02-18 00:41:22,741 INFO L87 Difference]: Start difference. First operand 106 states and 109 transitions. Second operand has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:41:25,828 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2023-02-18 00:41:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 00:41:25,828 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-02-18 00:41:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:41:25,829 INFO L225 Difference]: With dead ends: 146 [2023-02-18 00:41:25,829 INFO L226 Difference]: Without dead ends: 131 [2023-02-18 00:41:25,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 190 SyntacticMatches, 6 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1203, Invalid=6279, Unknown=0, NotChecked=0, Total=7482 [2023-02-18 00:41:25,831 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 105 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-18 00:41:25,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 53 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-18 00:41:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-18 00:41:25,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2023-02-18 00:41:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.054263565891473) internal successors, (136), 129 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2023-02-18 00:41:25,841 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 105 [2023-02-18 00:41:25,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:41:25,842 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2023-02-18 00:41:25,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7142857142857144) internal successors, (133), 49 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:41:25,842 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2023-02-18 00:41:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-18 00:41:25,843 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:41:25,843 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 32, 9, 1, 1, 1, 1, 1, 1] [2023-02-18 00:41:25,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 00:41:26,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:26,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:41:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:41:26,044 INFO L85 PathProgramCache]: Analyzing trace with hash 674089979, now seen corresponding path program 4 times [2023-02-18 00:41:26,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:41:26,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846233829] [2023-02-18 00:41:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:41:26,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:41:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:41:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 849 proven. 1552 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-18 00:41:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:41:26,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846233829] [2023-02-18 00:41:26,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846233829] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:41:26,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893279552] [2023-02-18 00:41:26,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 00:41:26,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:41:26,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:41:26,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:41:26,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 00:41:26,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 00:41:26,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 00:41:26,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-18 00:41:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 00:41:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 774 proven. 1650 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 00:41:27,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 00:41:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2501 backedges. 774 proven. 1650 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-18 00:41:29,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893279552] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 00:41:29,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 00:41:29,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 36, 37] total 72 [2023-02-18 00:41:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872956421] [2023-02-18 00:41:29,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 00:41:29,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-18 00:41:29,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 00:41:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-18 00:41:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1400, Invalid=3712, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 00:41:29,314 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:42:14,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:06,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:08,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:10,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:12,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:51,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:55,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:43:57,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:44:43,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:44:45,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:44:47,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:45:44,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:46:35,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:46:37,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:47:15,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:47:17,547 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (< 4294967295 (+ .cse0 1)) (not (>= .cse0 5000000)))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296))) (or (< 4294967295 (+ .cse1 1)) (not (>= .cse1 5000000)))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< 4294967295 (+ .cse2 1)) (not (>= .cse2 5000000)))) (let ((.cse3 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse3 1)) (not (>= .cse3 5000000)))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (< 4294967295 (+ .cse4 1)) (not (>= .cse4 5000000)))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< 4294967295 (+ .cse5 1)) (not (>= .cse5 5000000)))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (not (>= .cse6 5000000)) (< 4294967295 (+ .cse6 1)))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296))) (or (not (>= .cse7 5000000)) (< 4294967295 (+ .cse7 1)))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (< 4294967295 (+ .cse8 1)) (not (>= .cse8 5000000)))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) (or (not (>= .cse9 5000000)) (< 4294967295 (+ .cse9 1)))) (let ((.cse10 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (not (>= .cse10 5000000)) (< 4294967295 (+ .cse10 1)))) (let ((.cse11 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse11 1)) (not (>= .cse11 5000000)))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (not (>= .cse12 5000000)) (< 4294967295 (+ .cse12 1)))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296))) (or (not (>= .cse13 5000000)) (< 4294967295 (+ .cse13 1)))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296))) (or (< 4294967295 (+ .cse14 1)) (not (>= .cse14 5000000)))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (not (>= .cse15 5000000)) (< 4294967295 (+ .cse15 1)))) (let ((.cse16 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse16 1)) (not (>= .cse16 5000000)))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< 4294967295 (+ .cse17 1)) (not (>= .cse17 5000000)))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (< 4294967295 (+ 1 .cse18)) (not (>= .cse18 5000000)))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296))) (or (not (>= .cse19 5000000)) (< 4294967295 (+ .cse19 1)))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (not (>= .cse20 5000000)) (< 4294967295 (+ .cse20 1)))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296))) (or (not (>= .cse21 5000000)) (< 4294967295 (+ 1 .cse21)))) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296))) (or (< 4294967295 (+ .cse22 1)) (not (>= .cse22 5000000)))) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296))) (or (not (>= .cse23 5000000)) (< 4294967295 (+ .cse23 1)))) (not (>= (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 5000000)) (let ((.cse24 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or (not (>= .cse24 5000000)) (< 4294967295 (+ .cse24 1)))) (let ((.cse25 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (not (>= .cse25 5000000)) (< 4294967295 (+ .cse25 1))))) is different from false [2023-02-18 00:47:19,556 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (< 4294967295 (+ .cse0 1)) (not (>= .cse0 5000000)))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296))) (or (< 4294967295 (+ .cse1 1)) (not (>= .cse1 5000000)))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< 4294967295 (+ .cse2 1)) (not (>= .cse2 5000000)))) (let ((.cse3 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse3 1)) (not (>= .cse3 5000000)))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (< 4294967295 (+ .cse4 1)) (not (>= .cse4 5000000)))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< 4294967295 (+ .cse5 1)) (not (>= .cse5 5000000)))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (not (>= .cse6 5000000)) (< 4294967295 (+ .cse6 1)))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296))) (or (not (>= .cse7 5000000)) (< 4294967295 (+ .cse7 1)))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (< 4294967295 (+ .cse8 1)) (not (>= .cse8 5000000)))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) (or (not (>= .cse9 5000000)) (< 4294967295 (+ .cse9 1)))) (let ((.cse10 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (not (>= .cse10 5000000)) (< 4294967295 (+ .cse10 1)))) (let ((.cse11 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse11 1)) (not (>= .cse11 5000000)))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (not (>= .cse12 5000000)) (< 4294967295 (+ .cse12 1)))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296))) (or (not (>= .cse13 5000000)) (< 4294967295 (+ .cse13 1)))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296))) (or (< 4294967295 (+ .cse14 1)) (not (>= .cse14 5000000)))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (not (>= .cse15 5000000)) (< 4294967295 (+ .cse15 1)))) (let ((.cse16 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse16 1)) (not (>= .cse16 5000000)))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296))) (or (< 4294967295 (+ .cse17 1)) (not (>= .cse17 5000000)))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (< 4294967295 (+ 1 .cse18)) (not (>= .cse18 5000000)))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296))) (or (not (>= .cse19 5000000)) (< 4294967295 (+ .cse19 1)))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296))) (or (not (>= .cse20 5000000)) (< 4294967295 (+ 1 .cse20)))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296))) (or (< 4294967295 (+ .cse21 1)) (not (>= .cse21 5000000)))) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296))) (or (not (>= .cse22 5000000)) (< 4294967295 (+ .cse22 1)))) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or (not (>= .cse23 5000000)) (< 4294967295 (+ .cse23 1)))) (let ((.cse24 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (not (>= .cse24 5000000)) (< 4294967295 (+ .cse24 1))))) is different from false [2023-02-18 00:47:50,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:48:39,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:48:41,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:48:45,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:48:49,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:49:25,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:49:27,895 WARN L837 $PredicateComparison]: unable to prove that (and (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296))) (or (< 4294967295 (+ .cse0 1)) (not (>= .cse0 5000000)))) (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296))) (or (< 4294967295 (+ .cse1 1)) (not (>= .cse1 5000000)))) (let ((.cse2 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296))) (or (< 4294967295 (+ .cse2 1)) (not (>= .cse2 5000000)))) (let ((.cse3 (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse3 1)) (not (>= .cse3 5000000)))) (let ((.cse4 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296))) (or (< 4294967295 (+ .cse4 1)) (not (>= .cse4 5000000)))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296))) (or (< 4294967295 (+ .cse5 1)) (not (>= .cse5 5000000)))) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296))) (or (not (>= .cse6 5000000)) (< 4294967295 (+ .cse6 1)))) (let ((.cse7 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296))) (or (not (>= .cse7 5000000)) (< 4294967295 (+ .cse7 1)))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296))) (or (< 4294967295 (+ .cse8 1)) (not (>= .cse8 5000000)))) (let ((.cse9 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296))) (or (not (>= .cse9 5000000)) (< 4294967295 (+ .cse9 1)))) (let ((.cse10 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296))) (or (not (>= .cse10 5000000)) (< 4294967295 (+ .cse10 1)))) (let ((.cse11 (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse11 1)) (not (>= .cse11 5000000)))) (let ((.cse12 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296))) (or (not (>= .cse12 5000000)) (< 4294967295 (+ .cse12 1)))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296))) (or (not (>= .cse13 5000000)) (< 4294967295 (+ .cse13 1)))) (let ((.cse14 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296))) (or (< 4294967295 (+ .cse14 1)) (not (>= .cse14 5000000)))) (let ((.cse15 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296))) (or (not (>= .cse15 5000000)) (< 4294967295 (+ .cse15 1)))) (let ((.cse16 (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296))) (or (< 4294967295 (+ .cse16 1)) (not (>= .cse16 5000000)))) (let ((.cse17 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296))) (or (< 4294967295 (+ 1 .cse17)) (not (>= .cse17 5000000)))) (let ((.cse18 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296))) (or (not (>= .cse18 5000000)) (< 4294967295 (+ .cse18 1)))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296))) (or (not (>= .cse19 5000000)) (< 4294967295 (+ 1 .cse19)))) (let ((.cse20 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296))) (or (< 4294967295 (+ .cse20 1)) (not (>= .cse20 5000000)))) (let ((.cse21 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296))) (or (not (>= .cse21 5000000)) (< 4294967295 (+ .cse21 1)))) (not (>= (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 5000000)) (let ((.cse22 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296))) (or (not (>= .cse22 5000000)) (< 4294967295 (+ .cse22 1)))) (let ((.cse23 (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296))) (or (not (>= .cse23 5000000)) (< 4294967295 (+ .cse23 1))))) is different from false [2023-02-18 00:49:29,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:50:56,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:51:26,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:51:28,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:51:55,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:51:57,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:51:59,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 00:54:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 00:54:44,962 INFO L93 Difference]: Finished difference Result 274 states and 322 transitions. [2023-02-18 00:54:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-18 00:54:44,963 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-02-18 00:54:44,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 00:54:44,964 INFO L225 Difference]: With dead ends: 274 [2023-02-18 00:54:44,964 INFO L226 Difference]: Without dead ends: 238 [2023-02-18 00:54:44,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 190 SyntacticMatches, 35 SemanticMatches, 109 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 716.4s TimeCoverageRelationStatistics Valid=3949, Invalid=7592, Unknown=27, NotChecked=642, Total=12210 [2023-02-18 00:54:44,966 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 109 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3694 mSolverCounterSat, 48 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3694 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 81.8s IncrementalHoareTripleChecker+Time [2023-02-18 00:54:44,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 114 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3694 Invalid, 14 Unknown, 5 Unchecked, 81.8s Time] [2023-02-18 00:54:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-02-18 00:54:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-02-18 00:54:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.029535864978903) internal successors, (244), 237 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:54:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 244 transitions. [2023-02-18 00:54:45,000 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 244 transitions. Word has length 129 [2023-02-18 00:54:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 00:54:45,001 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 244 transitions. [2023-02-18 00:54:45,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.986111111111111) internal successors, (215), 72 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 00:54:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 244 transitions. [2023-02-18 00:54:45,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-02-18 00:54:45,008 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 00:54:45,008 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 68, 9, 1, 1, 1, 1, 1, 1] [2023-02-18 00:54:45,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 00:54:45,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:54:45,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 00:54:45,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 00:54:45,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1539216197, now seen corresponding path program 5 times [2023-02-18 00:54:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 00:54:45,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722908718] [2023-02-18 00:54:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 00:54:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 00:54:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 00:54:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8855 backedges. 1785 proven. 6970 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-02-18 00:54:48,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 00:54:48,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722908718] [2023-02-18 00:54:48,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722908718] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 00:54:48,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127882610] [2023-02-18 00:54:48,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 00:54:48,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 00:54:48,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 00:54:48,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 00:54:48,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process