./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.08.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/systemc/transmitter.08.cil.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 d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:17:41,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:17:41,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:17:41,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:17:41,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:17:41,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:17:41,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:17:41,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:17:41,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:17:41,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:17:41,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:17:41,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:17:41,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:17:41,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:17:41,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:17:41,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:17:41,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:17:41,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:17:41,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:17:41,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:17:41,306 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:17:41,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:17:41,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:17:41,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:17:41,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:17:41,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:17:41,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:17:41,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:17:41,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:17:41,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:17:41,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:17:41,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:17:41,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:17:41,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:17:41,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:17:41,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:17:41,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:17:41,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:17:41,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:17:41,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:17:41,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:17:41,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:17:41,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:17:41,368 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:17:41,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:17:41,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:17:41,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:17:41,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:17:41,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:17:41,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:17:41,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:17:41,371 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:17:41,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:17:41,372 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:17:41,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:17:41,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:17:41,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:17:41,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:17:41,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:17:41,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:17:41,374 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:17:41,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:17:41,374 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:17:41,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:17:41,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:17:41,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:17:41,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:17:41,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:17:41,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:17:41,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:17:41,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:17:41,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:17:41,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:17:41,376 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:17:41,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:17:41,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:17:41,377 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0fbb3eaba725aed5c3b8bf09c66f0f1daed4feeee0b9a3792dc033de334e501 [2022-07-21 05:17:41,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:17:41,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:17:41,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:17:41,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:17:41,735 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:17:41,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-07-21 05:17:41,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebea033c3/87b72403b7fe4548af21a1a5cd118e66/FLAGa5aa8152f [2022-07-21 05:17:42,261 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:17:42,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.08.cil.c [2022-07-21 05:17:42,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebea033c3/87b72403b7fe4548af21a1a5cd118e66/FLAGa5aa8152f [2022-07-21 05:17:42,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebea033c3/87b72403b7fe4548af21a1a5cd118e66 [2022-07-21 05:17:42,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:17:42,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:17:42,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:17:42,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:17:42,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:17:42,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:17:42" (1/1) ... [2022-07-21 05:17:42,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe269a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:42, skipping insertion in model container [2022-07-21 05:17:42,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:17:42" (1/1) ... [2022-07-21 05:17:42,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:17:42,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:17:42,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-07-21 05:17:43,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:17:43,145 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:17:43,158 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.08.cil.c[706,719] [2022-07-21 05:17:43,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:17:43,245 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:17:43,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43 WrapperNode [2022-07-21 05:17:43,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:17:43,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:17:43,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:17:43,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:17:43,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,323 INFO L137 Inliner]: procedures = 44, calls = 54, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 606 [2022-07-21 05:17:43,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:17:43,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:17:43,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:17:43,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:17:43,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:17:43,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:17:43,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:17:43,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:17:43,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (1/1) ... [2022-07-21 05:17:43,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:17:43,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:17:43,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:17:43,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:17:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:17:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:17:43,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:17:43,445 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:17:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:17:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:17:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:17:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:17:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:17:43,446 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:17:43,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:17:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:17:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:17:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:17:43,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:17:43,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:17:43,567 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:17:43,571 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:17:44,137 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:17:44,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:17:44,147 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 05:17:44,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:17:44 BoogieIcfgContainer [2022-07-21 05:17:44,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:17:44,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:17:44,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:17:44,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:17:44,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:17:42" (1/3) ... [2022-07-21 05:17:44,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54228483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:17:44, skipping insertion in model container [2022-07-21 05:17:44,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:43" (2/3) ... [2022-07-21 05:17:44,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54228483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:17:44, skipping insertion in model container [2022-07-21 05:17:44,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:17:44" (3/3) ... [2022-07-21 05:17:44,159 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.08.cil.c [2022-07-21 05:17:44,172 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:17:44,172 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:17:44,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:17:44,229 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2610f306, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@10d1b698 [2022-07-21 05:17:44,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:17:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 249 states have (on average 1.6465863453815262) internal successors, (410), 251 states have internal predecessors, (410), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-21 05:17:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:44,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:44,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:44,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:44,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1873547146, now seen corresponding path program 1 times [2022-07-21 05:17:44,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:44,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881017579] [2022-07-21 05:17:44,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:44,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:44,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:44,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881017579] [2022-07-21 05:17:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881017579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:44,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:44,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:17:44,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025457962] [2022-07-21 05:17:44,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:17:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:17:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:17:44,765 INFO L87 Difference]: Start difference. First operand has 278 states, 249 states have (on average 1.6465863453815262) internal successors, (410), 251 states have internal predecessors, (410), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:45,852 INFO L93 Difference]: Finished difference Result 639 states and 1047 transitions. [2022-07-21 05:17:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:17:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:45,874 INFO L225 Difference]: With dead ends: 639 [2022-07-21 05:17:45,874 INFO L226 Difference]: Without dead ends: 369 [2022-07-21 05:17:45,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:17:45,882 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 714 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:45,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 757 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:17:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-07-21 05:17:45,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 273. [2022-07-21 05:17:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 245 states have (on average 1.546938775510204) internal successors, (379), 246 states have internal predecessors, (379), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-21 05:17:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 421 transitions. [2022-07-21 05:17:45,952 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 421 transitions. Word has length 139 [2022-07-21 05:17:45,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:45,952 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 421 transitions. [2022-07-21 05:17:45,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.8) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 421 transitions. [2022-07-21 05:17:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:45,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:45,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:45,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:17:45,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:45,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:45,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1443888840, now seen corresponding path program 1 times [2022-07-21 05:17:45,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:45,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408468390] [2022-07-21 05:17:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:45,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:46,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408468390] [2022-07-21 05:17:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408468390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:46,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:46,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:17:46,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650892389] [2022-07-21 05:17:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:17:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:17:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:17:46,227 INFO L87 Difference]: Start difference. First operand 273 states and 421 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:48,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:48,010 INFO L93 Difference]: Finished difference Result 988 states and 1569 transitions. [2022-07-21 05:17:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:17:48,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:48,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:48,015 INFO L225 Difference]: With dead ends: 988 [2022-07-21 05:17:48,016 INFO L226 Difference]: Without dead ends: 731 [2022-07-21 05:17:48,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:17:48,018 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1067 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:48,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1179 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 05:17:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-07-21 05:17:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 539. [2022-07-21 05:17:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 488 states have (on average 1.5573770491803278) internal successors, (760), 490 states have internal predecessors, (760), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-21 05:17:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 837 transitions. [2022-07-21 05:17:48,093 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 837 transitions. Word has length 139 [2022-07-21 05:17:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:48,095 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 837 transitions. [2022-07-21 05:17:48,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:48,096 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 837 transitions. [2022-07-21 05:17:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:48,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:48,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:48,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:17:48,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:48,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:48,108 INFO L85 PathProgramCache]: Analyzing trace with hash 286680855, now seen corresponding path program 1 times [2022-07-21 05:17:48,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:48,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674836659] [2022-07-21 05:17:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:48,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:48,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674836659] [2022-07-21 05:17:48,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674836659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:48,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:48,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186019467] [2022-07-21 05:17:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:48,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:48,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:48,272 INFO L87 Difference]: Start difference. First operand 539 states and 837 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:50,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:50,951 INFO L93 Difference]: Finished difference Result 1749 states and 2752 transitions. [2022-07-21 05:17:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:50,965 INFO L225 Difference]: With dead ends: 1749 [2022-07-21 05:17:50,965 INFO L226 Difference]: Without dead ends: 1226 [2022-07-21 05:17:50,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:50,974 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 1162 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:50,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 2203 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 05:17:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-07-21 05:17:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 787. [2022-07-21 05:17:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 713 states have (on average 1.549789621318373) internal successors, (1105), 716 states have internal predecessors, (1105), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-21 05:17:51,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1216 transitions. [2022-07-21 05:17:51,046 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1216 transitions. Word has length 139 [2022-07-21 05:17:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:51,046 INFO L495 AbstractCegarLoop]: Abstraction has 787 states and 1216 transitions. [2022-07-21 05:17:51,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1216 transitions. [2022-07-21 05:17:51,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:51,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:51,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:51,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:17:51,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash -805954347, now seen corresponding path program 1 times [2022-07-21 05:17:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:51,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709391431] [2022-07-21 05:17:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:51,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709391431] [2022-07-21 05:17:51,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709391431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:51,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:51,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566924870] [2022-07-21 05:17:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:51,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:51,228 INFO L87 Difference]: Start difference. First operand 787 states and 1216 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:53,789 INFO L93 Difference]: Finished difference Result 2691 states and 4225 transitions. [2022-07-21 05:17:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:53,800 INFO L225 Difference]: With dead ends: 2691 [2022-07-21 05:17:53,801 INFO L226 Difference]: Without dead ends: 1920 [2022-07-21 05:17:53,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:53,805 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1159 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:53,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 2195 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:17:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-07-21 05:17:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1284. [2022-07-21 05:17:53,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1164 states have (on average 1.5429553264604812) internal successors, (1796), 1169 states have internal predecessors, (1796), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-21 05:17:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1979 transitions. [2022-07-21 05:17:53,900 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1979 transitions. Word has length 139 [2022-07-21 05:17:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:53,902 INFO L495 AbstractCegarLoop]: Abstraction has 1284 states and 1979 transitions. [2022-07-21 05:17:53,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1979 transitions. [2022-07-21 05:17:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:53,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:53,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:17:53,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2088126633, now seen corresponding path program 1 times [2022-07-21 05:17:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:53,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015708389] [2022-07-21 05:17:53,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:53,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:54,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:54,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015708389] [2022-07-21 05:17:54,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015708389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:54,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:54,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:54,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874149332] [2022-07-21 05:17:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:54,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:54,064 INFO L87 Difference]: Start difference. First operand 1284 states and 1979 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:56,505 INFO L93 Difference]: Finished difference Result 4506 states and 7048 transitions. [2022-07-21 05:17:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:56,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:56,522 INFO L225 Difference]: With dead ends: 4506 [2022-07-21 05:17:56,523 INFO L226 Difference]: Without dead ends: 3238 [2022-07-21 05:17:56,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:56,528 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1235 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:56,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1567 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:17:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-07-21 05:17:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 2279. [2022-07-21 05:17:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 2067 states have (on average 1.5374939525882922) internal successors, (3178), 2076 states have internal predecessors, (3178), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-21 05:17:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3511 transitions. [2022-07-21 05:17:56,686 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3511 transitions. Word has length 139 [2022-07-21 05:17:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:56,686 INFO L495 AbstractCegarLoop]: Abstraction has 2279 states and 3511 transitions. [2022-07-21 05:17:56,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3511 transitions. [2022-07-21 05:17:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:56,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:56,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:56,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:17:56,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash 364364949, now seen corresponding path program 1 times [2022-07-21 05:17:56,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:56,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463260866] [2022-07-21 05:17:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:56,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:56,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463260866] [2022-07-21 05:17:56,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463260866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:56,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:56,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794949778] [2022-07-21 05:17:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:56,840 INFO L87 Difference]: Start difference. First operand 2279 states and 3511 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:59,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:59,380 INFO L93 Difference]: Finished difference Result 8135 states and 12710 transitions. [2022-07-21 05:17:59,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:59,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:17:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:59,407 INFO L225 Difference]: With dead ends: 8135 [2022-07-21 05:17:59,408 INFO L226 Difference]: Without dead ends: 5872 [2022-07-21 05:17:59,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:59,418 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1151 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:59,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 2187 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:17:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5872 states. [2022-07-21 05:17:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5872 to 4274. [2022-07-21 05:17:59,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 3878 states have (on average 1.5337802991232594) internal successors, (5948), 3895 states have internal predecessors, (5948), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 05:17:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6599 transitions. [2022-07-21 05:17:59,725 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6599 transitions. Word has length 139 [2022-07-21 05:17:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:59,725 INFO L495 AbstractCegarLoop]: Abstraction has 4274 states and 6599 transitions. [2022-07-21 05:17:59,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6599 transitions. [2022-07-21 05:17:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:17:59,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:59,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:17:59,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:17:59,733 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:59,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1357637737, now seen corresponding path program 1 times [2022-07-21 05:17:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709679123] [2022-07-21 05:17:59,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:59,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:17:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:17:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:17:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:17:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:59,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709679123] [2022-07-21 05:17:59,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709679123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:59,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:59,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901231702] [2022-07-21 05:17:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:59,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:59,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:59,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:59,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:59,871 INFO L87 Difference]: Start difference. First operand 4274 states and 6599 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:01,135 INFO L93 Difference]: Finished difference Result 10066 states and 15794 transitions. [2022-07-21 05:18:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:01,162 INFO L225 Difference]: With dead ends: 10066 [2022-07-21 05:18:01,163 INFO L226 Difference]: Without dead ends: 5808 [2022-07-21 05:18:01,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:01,177 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 775 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:01,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1104 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:18:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2022-07-21 05:18:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 4274. [2022-07-21 05:18:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 3878 states have (on average 1.5293965961835998) internal successors, (5931), 3895 states have internal predecessors, (5931), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 05:18:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6582 transitions. [2022-07-21 05:18:01,474 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6582 transitions. Word has length 139 [2022-07-21 05:18:01,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:01,474 INFO L495 AbstractCegarLoop]: Abstraction has 4274 states and 6582 transitions. [2022-07-21 05:18:01,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:01,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6582 transitions. [2022-07-21 05:18:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:01,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:01,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:01,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:18:01,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1690280875, now seen corresponding path program 1 times [2022-07-21 05:18:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:01,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032392710] [2022-07-21 05:18:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:01,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:01,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032392710] [2022-07-21 05:18:01,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032392710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:01,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:01,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633518830] [2022-07-21 05:18:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:01,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:01,600 INFO L87 Difference]: Start difference. First operand 4274 states and 6582 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:02,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:02,673 INFO L93 Difference]: Finished difference Result 10048 states and 15708 transitions. [2022-07-21 05:18:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:02,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:02,699 INFO L225 Difference]: With dead ends: 10048 [2022-07-21 05:18:02,700 INFO L226 Difference]: Without dead ends: 5790 [2022-07-21 05:18:02,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:02,716 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 894 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:02,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 955 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:18:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2022-07-21 05:18:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 4274. [2022-07-21 05:18:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 3878 states have (on average 1.5250128932439402) internal successors, (5914), 3895 states have internal predecessors, (5914), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 05:18:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6565 transitions. [2022-07-21 05:18:03,070 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6565 transitions. Word has length 139 [2022-07-21 05:18:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 4274 states and 6565 transitions. [2022-07-21 05:18:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6565 transitions. [2022-07-21 05:18:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:03,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:03,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:03,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:18:03,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash 238651351, now seen corresponding path program 1 times [2022-07-21 05:18:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:03,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077206952] [2022-07-21 05:18:03,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:03,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:03,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077206952] [2022-07-21 05:18:03,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077206952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:03,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:03,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072193679] [2022-07-21 05:18:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:03,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:03,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:03,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:03,194 INFO L87 Difference]: Start difference. First operand 4274 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:04,226 INFO L93 Difference]: Finished difference Result 10012 states and 15586 transitions. [2022-07-21 05:18:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:04,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:04,250 INFO L225 Difference]: With dead ends: 10012 [2022-07-21 05:18:04,251 INFO L226 Difference]: Without dead ends: 5754 [2022-07-21 05:18:04,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:04,266 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 890 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:04,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 949 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:18:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2022-07-21 05:18:04,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 4274. [2022-07-21 05:18:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 3878 states have (on average 1.5206291903042806) internal successors, (5897), 3895 states have internal predecessors, (5897), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 05:18:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6548 transitions. [2022-07-21 05:18:04,545 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6548 transitions. Word has length 139 [2022-07-21 05:18:04,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:04,546 INFO L495 AbstractCegarLoop]: Abstraction has 4274 states and 6548 transitions. [2022-07-21 05:18:04,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:04,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6548 transitions. [2022-07-21 05:18:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:04,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:04,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:04,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:18:04,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1965796313, now seen corresponding path program 1 times [2022-07-21 05:18:04,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:04,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576171036] [2022-07-21 05:18:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:04,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576171036] [2022-07-21 05:18:04,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576171036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:04,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:04,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426193038] [2022-07-21 05:18:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:04,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:04,660 INFO L87 Difference]: Start difference. First operand 4274 states and 6548 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:05,886 INFO L93 Difference]: Finished difference Result 9994 states and 15499 transitions. [2022-07-21 05:18:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:05,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:05,910 INFO L225 Difference]: With dead ends: 9994 [2022-07-21 05:18:05,911 INFO L226 Difference]: Without dead ends: 5736 [2022-07-21 05:18:05,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:05,926 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 886 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:05,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 943 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:18:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2022-07-21 05:18:06,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4274. [2022-07-21 05:18:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4274 states, 3878 states have (on average 1.516245487364621) internal successors, (5880), 3895 states have internal predecessors, (5880), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-21 05:18:06,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4274 states to 4274 states and 6531 transitions. [2022-07-21 05:18:06,274 INFO L78 Accepts]: Start accepts. Automaton has 4274 states and 6531 transitions. Word has length 139 [2022-07-21 05:18:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:06,275 INFO L495 AbstractCegarLoop]: Abstraction has 4274 states and 6531 transitions. [2022-07-21 05:18:06,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4274 states and 6531 transitions. [2022-07-21 05:18:06,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:06,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:06,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:06,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:18:06,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:06,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1857814633, now seen corresponding path program 1 times [2022-07-21 05:18:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:06,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930251025] [2022-07-21 05:18:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:06,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930251025] [2022-07-21 05:18:06,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930251025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:06,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:06,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728110652] [2022-07-21 05:18:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:06,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:06,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:06,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:06,409 INFO L87 Difference]: Start difference. First operand 4274 states and 6531 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:09,498 INFO L93 Difference]: Finished difference Result 16837 states and 25918 transitions. [2022-07-21 05:18:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:18:09,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:09,569 INFO L225 Difference]: With dead ends: 16837 [2022-07-21 05:18:09,569 INFO L226 Difference]: Without dead ends: 12579 [2022-07-21 05:18:09,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:18:09,585 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 1371 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:09,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 2035 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:18:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2022-07-21 05:18:10,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 8312. [2022-07-21 05:18:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8312 states, 7564 states have (on average 1.5132205182443152) internal successors, (11446), 7597 states have internal predecessors, (11446), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2022-07-21 05:18:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 12755 transitions. [2022-07-21 05:18:10,269 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 12755 transitions. Word has length 139 [2022-07-21 05:18:10,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:10,269 INFO L495 AbstractCegarLoop]: Abstraction has 8312 states and 12755 transitions. [2022-07-21 05:18:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 12755 transitions. [2022-07-21 05:18:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:10,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:10,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:10,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:18:10,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:10,283 INFO L85 PathProgramCache]: Analyzing trace with hash 789789721, now seen corresponding path program 1 times [2022-07-21 05:18:10,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:10,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195211474] [2022-07-21 05:18:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:10,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195211474] [2022-07-21 05:18:10,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195211474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:10,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:10,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:10,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665949468] [2022-07-21 05:18:10,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:10,383 INFO L87 Difference]: Start difference. First operand 8312 states and 12755 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:11,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:11,782 INFO L93 Difference]: Finished difference Result 19234 states and 29874 transitions. [2022-07-21 05:18:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:11,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:11,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:11,825 INFO L225 Difference]: With dead ends: 19234 [2022-07-21 05:18:11,825 INFO L226 Difference]: Without dead ends: 10938 [2022-07-21 05:18:11,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:11,849 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 907 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:11,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 924 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:18:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10938 states. [2022-07-21 05:18:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10938 to 8312. [2022-07-21 05:18:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8312 states, 7564 states have (on average 1.5088577472236913) internal successors, (11413), 7597 states have internal predecessors, (11413), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2022-07-21 05:18:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 12722 transitions. [2022-07-21 05:18:12,522 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 12722 transitions. Word has length 139 [2022-07-21 05:18:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:12,523 INFO L495 AbstractCegarLoop]: Abstraction has 8312 states and 12722 transitions. [2022-07-21 05:18:12,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 12722 transitions. [2022-07-21 05:18:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:12,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:12,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:12,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:18:12,536 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1341561001, now seen corresponding path program 1 times [2022-07-21 05:18:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:12,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494006994] [2022-07-21 05:18:12,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:12,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:12,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494006994] [2022-07-21 05:18:12,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494006994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:12,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:12,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232531309] [2022-07-21 05:18:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:12,639 INFO L87 Difference]: Start difference. First operand 8312 states and 12722 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:14,318 INFO L93 Difference]: Finished difference Result 19200 states and 29707 transitions. [2022-07-21 05:18:14,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:14,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:14,354 INFO L225 Difference]: With dead ends: 19200 [2022-07-21 05:18:14,355 INFO L226 Difference]: Without dead ends: 10904 [2022-07-21 05:18:14,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:14,375 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 883 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:14,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 932 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:18:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10904 states. [2022-07-21 05:18:15,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10904 to 8312. [2022-07-21 05:18:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8312 states, 7564 states have (on average 1.5044949762030673) internal successors, (11380), 7597 states have internal predecessors, (11380), 517 states have call successors, (517), 198 states have call predecessors, (517), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2022-07-21 05:18:15,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8312 states to 8312 states and 12689 transitions. [2022-07-21 05:18:15,181 INFO L78 Accepts]: Start accepts. Automaton has 8312 states and 12689 transitions. Word has length 139 [2022-07-21 05:18:15,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:15,182 INFO L495 AbstractCegarLoop]: Abstraction has 8312 states and 12689 transitions. [2022-07-21 05:18:15,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:15,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8312 states and 12689 transitions. [2022-07-21 05:18:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:15,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:15,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:18:15,194 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1914821721, now seen corresponding path program 1 times [2022-07-21 05:18:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:15,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499820586] [2022-07-21 05:18:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:15,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:15,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499820586] [2022-07-21 05:18:15,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499820586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:15,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:15,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395013525] [2022-07-21 05:18:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:15,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:15,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:15,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:15,317 INFO L87 Difference]: Start difference. First operand 8312 states and 12689 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:19,183 INFO L93 Difference]: Finished difference Result 31333 states and 48196 transitions. [2022-07-21 05:18:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:18:19,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:19,272 INFO L225 Difference]: With dead ends: 31333 [2022-07-21 05:18:19,272 INFO L226 Difference]: Without dead ends: 23037 [2022-07-21 05:18:19,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:18:19,300 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1239 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:19,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2066 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:18:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23037 states. [2022-07-21 05:18:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23037 to 16427. [2022-07-21 05:18:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16427 states, 14991 states have (on average 1.5015676072310054) internal successors, (22510), 15056 states have internal predecessors, (22510), 981 states have call successors, (981), 390 states have call predecessors, (981), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2022-07-21 05:18:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16427 states to 16427 states and 25265 transitions. [2022-07-21 05:18:20,549 INFO L78 Accepts]: Start accepts. Automaton has 16427 states and 25265 transitions. Word has length 139 [2022-07-21 05:18:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:20,549 INFO L495 AbstractCegarLoop]: Abstraction has 16427 states and 25265 transitions. [2022-07-21 05:18:20,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16427 states and 25265 transitions. [2022-07-21 05:18:20,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:20,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:20,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:20,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:18:20,570 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash -58343657, now seen corresponding path program 1 times [2022-07-21 05:18:20,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926138310] [2022-07-21 05:18:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:20,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:20,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926138310] [2022-07-21 05:18:20,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926138310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:20,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:20,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499352911] [2022-07-21 05:18:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:20,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:20,683 INFO L87 Difference]: Start difference. First operand 16427 states and 25265 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:23,341 INFO L93 Difference]: Finished difference Result 37570 states and 58486 transitions. [2022-07-21 05:18:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:18:23,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:23,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:23,417 INFO L225 Difference]: With dead ends: 37570 [2022-07-21 05:18:23,417 INFO L226 Difference]: Without dead ends: 21159 [2022-07-21 05:18:23,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:18:23,452 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 766 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:23,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1066 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:18:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21159 states. [2022-07-21 05:18:24,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21159 to 16427. [2022-07-21 05:18:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16427 states, 14991 states have (on average 1.4972316723367354) internal successors, (22445), 15056 states have internal predecessors, (22445), 981 states have call successors, (981), 390 states have call predecessors, (981), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2022-07-21 05:18:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16427 states to 16427 states and 25200 transitions. [2022-07-21 05:18:24,710 INFO L78 Accepts]: Start accepts. Automaton has 16427 states and 25200 transitions. Word has length 139 [2022-07-21 05:18:24,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:24,710 INFO L495 AbstractCegarLoop]: Abstraction has 16427 states and 25200 transitions. [2022-07-21 05:18:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 16427 states and 25200 transitions. [2022-07-21 05:18:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:24,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:24,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:24,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:18:24,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2094763161, now seen corresponding path program 1 times [2022-07-21 05:18:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:24,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195568549] [2022-07-21 05:18:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:24,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:24,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:24,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195568549] [2022-07-21 05:18:24,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195568549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:24,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:24,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531070021] [2022-07-21 05:18:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:24,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:24,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:24,860 INFO L87 Difference]: Start difference. First operand 16427 states and 25200 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:30,460 INFO L93 Difference]: Finished difference Result 58834 states and 91118 transitions. [2022-07-21 05:18:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:18:30,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:30,588 INFO L225 Difference]: With dead ends: 58834 [2022-07-21 05:18:30,588 INFO L226 Difference]: Without dead ends: 42423 [2022-07-21 05:18:30,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:18:30,638 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1098 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:30,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 2110 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:18:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42423 states. [2022-07-21 05:18:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42423 to 32750. [2022-07-21 05:18:33,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32750 states, 29970 states have (on average 1.4967967967967968) internal successors, (44859), 30099 states have internal predecessors, (44859), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2022-07-21 05:18:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32750 states to 32750 states and 50928 transitions. [2022-07-21 05:18:33,284 INFO L78 Accepts]: Start accepts. Automaton has 32750 states and 50928 transitions. Word has length 139 [2022-07-21 05:18:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:33,285 INFO L495 AbstractCegarLoop]: Abstraction has 32750 states and 50928 transitions. [2022-07-21 05:18:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 32750 states and 50928 transitions. [2022-07-21 05:18:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:33,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:33,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:33,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:18:33,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:33,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2081762661, now seen corresponding path program 1 times [2022-07-21 05:18:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:33,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944633757] [2022-07-21 05:18:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:33,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:33,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944633757] [2022-07-21 05:18:33,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944633757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:33,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:33,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162114131] [2022-07-21 05:18:33,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:33,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:33,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:33,419 INFO L87 Difference]: Start difference. First operand 32750 states and 50928 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:39,173 INFO L93 Difference]: Finished difference Result 73186 states and 114497 transitions. [2022-07-21 05:18:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:18:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:39,384 INFO L225 Difference]: With dead ends: 73186 [2022-07-21 05:18:39,384 INFO L226 Difference]: Without dead ends: 40453 [2022-07-21 05:18:39,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:18:39,454 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 824 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:39,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1353 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:18:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40453 states. [2022-07-21 05:18:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40453 to 32753. [2022-07-21 05:18:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32753 states, 29973 states have (on average 1.4924765622393488) internal successors, (44734), 30102 states have internal predecessors, (44734), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2022-07-21 05:18:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32753 states to 32753 states and 50803 transitions. [2022-07-21 05:18:42,444 INFO L78 Accepts]: Start accepts. Automaton has 32753 states and 50803 transitions. Word has length 139 [2022-07-21 05:18:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:42,444 INFO L495 AbstractCegarLoop]: Abstraction has 32753 states and 50803 transitions. [2022-07-21 05:18:42,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 32753 states and 50803 transitions. [2022-07-21 05:18:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:42,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:42,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:18:42,471 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1156473433, now seen corresponding path program 1 times [2022-07-21 05:18:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:42,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509405839] [2022-07-21 05:18:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:42,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509405839] [2022-07-21 05:18:42,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509405839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:42,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:42,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598777387] [2022-07-21 05:18:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:42,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:42,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:42,596 INFO L87 Difference]: Start difference. First operand 32753 states and 50803 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:51,986 INFO L93 Difference]: Finished difference Result 91364 states and 140228 transitions. [2022-07-21 05:18:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:18:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:18:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:52,187 INFO L225 Difference]: With dead ends: 91364 [2022-07-21 05:18:52,187 INFO L226 Difference]: Without dead ends: 58628 [2022-07-21 05:18:52,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:18:52,247 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 824 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:52,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1342 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:18:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58628 states. [2022-07-21 05:18:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58628 to 33140. [2022-07-21 05:18:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33140 states, 30360 states have (on average 1.4861989459815548) internal successors, (45121), 30489 states have internal predecessors, (45121), 1877 states have call successors, (1877), 774 states have call predecessors, (1877), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2022-07-21 05:18:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33140 states to 33140 states and 51190 transitions. [2022-07-21 05:18:55,563 INFO L78 Accepts]: Start accepts. Automaton has 33140 states and 51190 transitions. Word has length 139 [2022-07-21 05:18:55,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:55,564 INFO L495 AbstractCegarLoop]: Abstraction has 33140 states and 51190 transitions. [2022-07-21 05:18:55,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 33140 states and 51190 transitions. [2022-07-21 05:18:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 05:18:55,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:55,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:18:55,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:18:55,592 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1261430633, now seen corresponding path program 1 times [2022-07-21 05:18:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:55,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595756328] [2022-07-21 05:18:55,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:18:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 05:18:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 05:18:55,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 05:18:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:55,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:55,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595756328] [2022-07-21 05:18:55,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595756328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:55,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:55,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257303122] [2022-07-21 05:18:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:55,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:55,757 INFO L87 Difference]: Start difference. First operand 33140 states and 51190 transitions. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:19:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:16,253 INFO L93 Difference]: Finished difference Result 193053 states and 305593 transitions. [2022-07-21 05:19:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 05:19:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 5 states have internal predecessors, (129), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 139 [2022-07-21 05:19:16,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:16,800 INFO L225 Difference]: With dead ends: 193053 [2022-07-21 05:19:16,800 INFO L226 Difference]: Without dead ends: 159930 [2022-07-21 05:19:16,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:19:16,936 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 2951 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:16,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1890 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 05:19:17,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159930 states.