./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.04.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.04.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 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:54:39,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:54:39,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:54:39,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:54:39,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:54:39,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:54:39,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:54:39,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:54:39,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:54:39,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:54:39,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:54:39,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:54:39,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:54:39,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:54:39,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:54:39,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:54:39,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:54:39,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:54:39,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:54:39,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:54:39,303 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:54:39,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:54:39,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:54:39,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:54:39,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:54:39,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:54:39,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:54:39,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:54:39,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:54:39,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:54:39,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:54:39,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:54:39,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:54:39,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:54:39,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:54:39,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:54:39,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:54:39,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:54:39,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:54:39,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:54:39,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:54:39,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:54:39,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:54:39,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:54:39,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:54:39,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:54:39,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:54:39,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:54:39,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:54:39,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:54:39,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:54:39,333 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:54:39,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:54:39,333 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:54:39,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:54:39,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:54:39,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:54:39,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:54:39,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:54:39,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:54:39,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:54:39,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:54:39,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:54:39,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:54:39,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:54:39,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:54:39,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:54:39,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:54:39,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:54:39,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:54:39,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:54:39,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:54:39,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:54:39,337 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:54:39,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:54:39,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:54:39,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1de07d37d630bd073064bf436fb9512b72ab982b0eaf3fcb1582f689c57482fa [2022-07-22 17:54:39,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:54:39,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:54:39,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:54:39,511 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:54:39,512 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:54:39,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-22 17:54:39,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e020a7a/8e06e452a23e4e68b208ab17aa30a8ee/FLAGc1bafb7a1 [2022-07-22 17:54:39,910 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:54:39,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.04.cil.c [2022-07-22 17:54:39,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e020a7a/8e06e452a23e4e68b208ab17aa30a8ee/FLAGc1bafb7a1 [2022-07-22 17:54:39,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e020a7a/8e06e452a23e4e68b208ab17aa30a8ee [2022-07-22 17:54:39,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:54:39,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:54:39,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:54:39,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:54:39,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:54:39,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:54:39" (1/1) ... [2022-07-22 17:54:39,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aa284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:39, skipping insertion in model container [2022-07-22 17:54:39,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:54:39" (1/1) ... [2022-07-22 17:54:39,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:54:39,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:54:40,122 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.04.cil.c[706,719] [2022-07-22 17:54:40,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:54:40,200 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:54:40,207 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.04.cil.c[706,719] [2022-07-22 17:54:40,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:54:40,241 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:54:40,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40 WrapperNode [2022-07-22 17:54:40,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:54:40,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:54:40,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:54:40,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:54:40,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,302 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 378 [2022-07-22 17:54:40,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:54:40,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:54:40,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:54:40,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:54:40,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:54:40,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:54:40,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:54:40,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:54:40,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (1/1) ... [2022-07-22 17:54:40,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:54:40,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:54:40,371 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) [2022-07-22 17:54:40,388 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 [2022-07-22 17:54:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:54:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:54:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:54:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:54:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:54:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:54:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:54:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:54:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:54:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:54:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:54:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:54:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:54:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:54:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:54:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:54:40,460 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:54:40,467 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:54:40,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:54:40,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:54:40,801 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-22 17:54:40,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:54:40 BoogieIcfgContainer [2022-07-22 17:54:40,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:54:40,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:54:40,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:54:40,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:54:40,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:54:39" (1/3) ... [2022-07-22 17:54:40,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1221860c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:54:40, skipping insertion in model container [2022-07-22 17:54:40,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:54:40" (2/3) ... [2022-07-22 17:54:40,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1221860c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:54:40, skipping insertion in model container [2022-07-22 17:54:40,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:54:40" (3/3) ... [2022-07-22 17:54:40,812 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2022-07-22 17:54:40,821 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:54:40,821 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:54:40,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:54:40,879 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@2c9302fa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@175578e4 [2022-07-22 17:54:40,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:54:40,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-22 17:54:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:40,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:40,905 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] [2022-07-22 17:54:40,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1239760114, now seen corresponding path program 1 times [2022-07-22 17:54:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581986797] [2022-07-22 17:54:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:41,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581986797] [2022-07-22 17:54:41,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581986797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:41,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:41,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:54:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490234667] [2022-07-22 17:54:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:41,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:54:41,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:41,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:54:41,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:54:41,256 INFO L87 Difference]: Start difference. First operand has 178 states, 153 states have (on average 1.607843137254902) internal successors, (246), 155 states have internal predecessors, (246), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-22 17:54:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:42,125 INFO L93 Difference]: Finished difference Result 613 states and 986 transitions. [2022-07-22 17:54:42,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:54:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:42,152 INFO L225 Difference]: With dead ends: 613 [2022-07-22 17:54:42,152 INFO L226 Difference]: Without dead ends: 439 [2022-07-22 17:54:42,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:54:42,162 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 612 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 766 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:54:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-22 17:54:42,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 335. [2022-07-22 17:54:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 292 states have (on average 1.5102739726027397) internal successors, (441), 294 states have internal predecessors, (441), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-22 17:54:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 502 transitions. [2022-07-22 17:54:42,239 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 502 transitions. Word has length 91 [2022-07-22 17:54:42,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:42,240 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 502 transitions. [2022-07-22 17:54:42,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-22 17:54:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 502 transitions. [2022-07-22 17:54:42,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:42,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:42,243 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] [2022-07-22 17:54:42,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:54:42,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:42,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:42,244 INFO L85 PathProgramCache]: Analyzing trace with hash -233016211, now seen corresponding path program 1 times [2022-07-22 17:54:42,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:42,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609919748] [2022-07-22 17:54:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:42,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:42,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609919748] [2022-07-22 17:54:42,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609919748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:42,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:42,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:42,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323934811] [2022-07-22 17:54:42,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:42,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:42,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:42,351 INFO L87 Difference]: Start difference. First operand 335 states and 502 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:43,534 INFO L93 Difference]: Finished difference Result 1045 states and 1585 transitions. [2022-07-22 17:54:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:54:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:43,539 INFO L225 Difference]: With dead ends: 1045 [2022-07-22 17:54:43,539 INFO L226 Difference]: Without dead ends: 722 [2022-07-22 17:54:43,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:54:43,542 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 647 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:43,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1335 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:54:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-22 17:54:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 487. [2022-07-22 17:54:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 425 states have (on average 1.5011764705882353) internal successors, (638), 428 states have internal predecessors, (638), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-22 17:54:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 725 transitions. [2022-07-22 17:54:43,571 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 725 transitions. Word has length 91 [2022-07-22 17:54:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:43,571 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 725 transitions. [2022-07-22 17:54:43,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 725 transitions. [2022-07-22 17:54:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:43,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:43,574 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] [2022-07-22 17:54:43,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:54:43,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:43,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:43,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1984614187, now seen corresponding path program 1 times [2022-07-22 17:54:43,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:43,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811396956] [2022-07-22 17:54:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:43,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811396956] [2022-07-22 17:54:43,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811396956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:43,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:43,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930255079] [2022-07-22 17:54:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:43,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:43,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:43,686 INFO L87 Difference]: Start difference. First operand 487 states and 725 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:44,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:44,825 INFO L93 Difference]: Finished difference Result 1603 states and 2422 transitions. [2022-07-22 17:54:44,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:54:44,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:44,834 INFO L225 Difference]: With dead ends: 1603 [2022-07-22 17:54:44,834 INFO L226 Difference]: Without dead ends: 1128 [2022-07-22 17:54:44,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:54:44,836 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 644 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1536 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:44,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1327 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1536 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:54:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2022-07-22 17:54:44,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 792. [2022-07-22 17:54:44,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 692 states have (on average 1.4927745664739884) internal successors, (1033), 697 states have internal predecessors, (1033), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-22 17:54:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1176 transitions. [2022-07-22 17:54:44,886 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1176 transitions. Word has length 91 [2022-07-22 17:54:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:44,886 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 1176 transitions. [2022-07-22 17:54:44,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1176 transitions. [2022-07-22 17:54:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:44,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:44,888 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] [2022-07-22 17:54:44,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:54:44,889 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:44,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash -576248659, now seen corresponding path program 1 times [2022-07-22 17:54:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:44,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561626851] [2022-07-22 17:54:44,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:44,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:44,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561626851] [2022-07-22 17:54:44,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561626851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:44,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:44,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482743953] [2022-07-22 17:54:44,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:44,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:45,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:45,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:45,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:45,001 INFO L87 Difference]: Start difference. First operand 792 states and 1176 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:46,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:46,053 INFO L93 Difference]: Finished difference Result 2682 states and 4037 transitions. [2022-07-22 17:54:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:54:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:46,061 INFO L225 Difference]: With dead ends: 2682 [2022-07-22 17:54:46,061 INFO L226 Difference]: Without dead ends: 1902 [2022-07-22 17:54:46,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:54:46,064 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 688 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:46,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 955 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:54:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-07-22 17:54:46,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1403. [2022-07-22 17:54:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1227 states have (on average 1.4857375713121435) internal successors, (1823), 1236 states have internal predecessors, (1823), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-22 17:54:46,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2084 transitions. [2022-07-22 17:54:46,133 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2084 transitions. Word has length 91 [2022-07-22 17:54:46,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:46,135 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 2084 transitions. [2022-07-22 17:54:46,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:46,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2084 transitions. [2022-07-22 17:54:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:46,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:46,142 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] [2022-07-22 17:54:46,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:54:46,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:46,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:46,143 INFO L85 PathProgramCache]: Analyzing trace with hash 310974187, now seen corresponding path program 1 times [2022-07-22 17:54:46,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:46,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153923236] [2022-07-22 17:54:46,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:46,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:46,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153923236] [2022-07-22 17:54:46,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153923236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:46,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:46,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:46,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612405790] [2022-07-22 17:54:46,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:46,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:46,249 INFO L87 Difference]: Start difference. First operand 1403 states and 2084 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:47,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:47,354 INFO L93 Difference]: Finished difference Result 4839 states and 7283 transitions. [2022-07-22 17:54:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:54:47,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:47,367 INFO L225 Difference]: With dead ends: 4839 [2022-07-22 17:54:47,367 INFO L226 Difference]: Without dead ends: 3448 [2022-07-22 17:54:47,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:54:47,371 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 636 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:47,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1319 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:54:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2022-07-22 17:54:47,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 2630. [2022-07-22 17:54:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 2302 states have (on average 1.4808861859252824) internal successors, (3409), 2319 states have internal predecessors, (3409), 209 states have call successors, (209), 102 states have call predecessors, (209), 118 states have return successors, (306), 224 states have call predecessors, (306), 209 states have call successors, (306) [2022-07-22 17:54:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3924 transitions. [2022-07-22 17:54:47,462 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3924 transitions. Word has length 91 [2022-07-22 17:54:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:47,462 INFO L495 AbstractCegarLoop]: Abstraction has 2630 states and 3924 transitions. [2022-07-22 17:54:47,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3924 transitions. [2022-07-22 17:54:47,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:47,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:47,474 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] [2022-07-22 17:54:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:54:47,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:47,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:47,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1600068371, now seen corresponding path program 1 times [2022-07-22 17:54:47,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:47,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263406053] [2022-07-22 17:54:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:47,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263406053] [2022-07-22 17:54:47,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263406053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:47,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:47,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285887321] [2022-07-22 17:54:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:47,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:47,561 INFO L87 Difference]: Start difference. First operand 2630 states and 3924 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:48,886 INFO L93 Difference]: Finished difference Result 10016 states and 15083 transitions. [2022-07-22 17:54:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:54:48,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:48,920 INFO L225 Difference]: With dead ends: 10016 [2022-07-22 17:54:48,921 INFO L226 Difference]: Without dead ends: 7398 [2022-07-22 17:54:48,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:54:48,931 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 665 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:48,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1305 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:54:48,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2022-07-22 17:54:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 5033. [2022-07-22 17:54:49,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5033 states, 4417 states have (on average 1.4831333484265339) internal successors, (6551), 4450 states have internal predecessors, (6551), 385 states have call successors, (385), 198 states have call predecessors, (385), 230 states have return successors, (660), 416 states have call predecessors, (660), 385 states have call successors, (660) [2022-07-22 17:54:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 7596 transitions. [2022-07-22 17:54:49,152 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 7596 transitions. Word has length 91 [2022-07-22 17:54:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:49,152 INFO L495 AbstractCegarLoop]: Abstraction has 5033 states and 7596 transitions. [2022-07-22 17:54:49,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 7596 transitions. [2022-07-22 17:54:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:49,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:49,157 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] [2022-07-22 17:54:49,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:54:49,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1523167573, now seen corresponding path program 1 times [2022-07-22 17:54:49,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:49,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489980991] [2022-07-22 17:54:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:49,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:49,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:49,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:49,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489980991] [2022-07-22 17:54:49,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489980991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:49,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:49,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:49,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222992251] [2022-07-22 17:54:49,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:49,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:49,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:49,233 INFO L87 Difference]: Start difference. First operand 5033 states and 7596 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:50,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:50,695 INFO L93 Difference]: Finished difference Result 18865 states and 28677 transitions. [2022-07-22 17:54:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:54:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:50,757 INFO L225 Difference]: With dead ends: 18865 [2022-07-22 17:54:50,757 INFO L226 Difference]: Without dead ends: 13844 [2022-07-22 17:54:50,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:54:50,775 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 727 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:50,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1255 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:54:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13844 states. [2022-07-22 17:54:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13844 to 9836. [2022-07-22 17:54:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 8660 states have (on average 1.4851039260969976) internal successors, (12861), 8725 states have internal predecessors, (12861), 721 states have call successors, (721), 390 states have call predecessors, (721), 454 states have return successors, (1514), 784 states have call predecessors, (1514), 721 states have call successors, (1514) [2022-07-22 17:54:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 15096 transitions. [2022-07-22 17:54:51,300 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 15096 transitions. Word has length 91 [2022-07-22 17:54:51,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:51,300 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 15096 transitions. [2022-07-22 17:54:51,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 15096 transitions. [2022-07-22 17:54:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:51,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:51,315 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] [2022-07-22 17:54:51,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:54:51,315 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:51,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1804449069, now seen corresponding path program 1 times [2022-07-22 17:54:51,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:51,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063920723] [2022-07-22 17:54:51,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063920723] [2022-07-22 17:54:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063920723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:51,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:51,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926101722] [2022-07-22 17:54:51,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:51,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:51,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:51,421 INFO L87 Difference]: Start difference. First operand 9836 states and 15096 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:53,353 INFO L93 Difference]: Finished difference Result 35059 states and 54211 transitions. [2022-07-22 17:54:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 17:54:53,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:53,420 INFO L225 Difference]: With dead ends: 35059 [2022-07-22 17:54:53,420 INFO L226 Difference]: Without dead ends: 25235 [2022-07-22 17:54:53,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:54:53,447 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 629 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:53,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1292 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:54:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25235 states. [2022-07-22 17:54:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25235 to 19472. [2022-07-22 17:54:54,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19472 states, 17208 states have (on average 1.4898303114830311) internal successors, (25637), 17337 states have internal predecessors, (25637), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-22 17:54:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19472 states to 19472 states and 30674 transitions. [2022-07-22 17:54:54,346 INFO L78 Accepts]: Start accepts. Automaton has 19472 states and 30674 transitions. Word has length 91 [2022-07-22 17:54:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:54,347 INFO L495 AbstractCegarLoop]: Abstraction has 19472 states and 30674 transitions. [2022-07-22 17:54:54,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19472 states and 30674 transitions. [2022-07-22 17:54:54,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:54,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:54,367 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] [2022-07-22 17:54:54,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:54:54,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1311822895, now seen corresponding path program 1 times [2022-07-22 17:54:54,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:54,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478968727] [2022-07-22 17:54:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:54,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:54,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478968727] [2022-07-22 17:54:54,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478968727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:54,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:54,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807306400] [2022-07-22 17:54:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:54,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:54,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:54,459 INFO L87 Difference]: Start difference. First operand 19472 states and 30674 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:56,006 INFO L93 Difference]: Finished difference Result 42704 states and 67413 transitions. [2022-07-22 17:54:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 17:54:56,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:56,100 INFO L225 Difference]: With dead ends: 42704 [2022-07-22 17:54:56,100 INFO L226 Difference]: Without dead ends: 23245 [2022-07-22 17:54:56,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:54:56,153 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:56,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 846 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:54:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23245 states. [2022-07-22 17:54:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23245 to 19475. [2022-07-22 17:54:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19475 states, 17211 states have (on average 1.4823078263900993) internal successors, (25512), 17340 states have internal predecessors, (25512), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-22 17:54:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19475 states to 19475 states and 30549 transitions. [2022-07-22 17:54:57,188 INFO L78 Accepts]: Start accepts. Automaton has 19475 states and 30549 transitions. Word has length 91 [2022-07-22 17:54:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:54:57,188 INFO L495 AbstractCegarLoop]: Abstraction has 19475 states and 30549 transitions. [2022-07-22 17:54:57,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 19475 states and 30549 transitions. [2022-07-22 17:54:57,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:54:57,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:54:57,207 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] [2022-07-22 17:54:57,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:54:57,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:54:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:54:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1513646829, now seen corresponding path program 1 times [2022-07-22 17:54:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:54:57,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571002346] [2022-07-22 17:54:57,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:54:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:54:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:54:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:54:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:54:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:54:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:54:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:54:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:54:57,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:54:57,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571002346] [2022-07-22 17:54:57,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571002346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:54:57,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:54:57,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:54:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769654954] [2022-07-22 17:54:57,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:54:57,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:54:57,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:54:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:54:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:54:57,287 INFO L87 Difference]: Start difference. First operand 19475 states and 30549 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:54:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:54:59,575 INFO L93 Difference]: Finished difference Result 50130 states and 77784 transitions. [2022-07-22 17:54:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:54:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:54:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:54:59,688 INFO L225 Difference]: With dead ends: 50130 [2022-07-22 17:54:59,688 INFO L226 Difference]: Without dead ends: 30668 [2022-07-22 17:54:59,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:54:59,728 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 447 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 17:54:59,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 835 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 17:54:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30668 states. [2022-07-22 17:55:00,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30668 to 19862. [2022-07-22 17:55:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19862 states, 17598 states have (on average 1.4717013296965564) internal successors, (25899), 17727 states have internal predecessors, (25899), 1361 states have call successors, (1361), 774 states have call predecessors, (1361), 902 states have return successors, (3676), 1488 states have call predecessors, (3676), 1361 states have call successors, (3676) [2022-07-22 17:55:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19862 states to 19862 states and 30936 transitions. [2022-07-22 17:55:00,830 INFO L78 Accepts]: Start accepts. Automaton has 19862 states and 30936 transitions. Word has length 91 [2022-07-22 17:55:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:00,831 INFO L495 AbstractCegarLoop]: Abstraction has 19862 states and 30936 transitions. [2022-07-22 17:55:00,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:55:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 19862 states and 30936 transitions. [2022-07-22 17:55:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:55:00,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:00,849 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] [2022-07-22 17:55:00,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:55:00,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1905301461, now seen corresponding path program 1 times [2022-07-22 17:55:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454752277] [2022-07-22 17:55:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:55:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:55:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:55:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:55:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454752277] [2022-07-22 17:55:00,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454752277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:00,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:00,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272380776] [2022-07-22 17:55:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:00,931 INFO L87 Difference]: Start difference. First operand 19862 states and 30936 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:55:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:05,954 INFO L93 Difference]: Finished difference Result 88631 states and 139259 transitions. [2022-07-22 17:55:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 17:55:05,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:55:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:06,173 INFO L225 Difference]: With dead ends: 88631 [2022-07-22 17:55:06,173 INFO L226 Difference]: Without dead ends: 68782 [2022-07-22 17:55:06,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-22 17:55:06,238 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1546 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:06,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1131 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 17:55:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68782 states. [2022-07-22 17:55:09,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68782 to 56490. [2022-07-22 17:55:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56490 states, 49916 states have (on average 1.474136549402997) internal successors, (73583), 50431 states have internal predecessors, (73583), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-22 17:55:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56490 states to 56490 states and 88086 transitions. [2022-07-22 17:55:09,430 INFO L78 Accepts]: Start accepts. Automaton has 56490 states and 88086 transitions. Word has length 91 [2022-07-22 17:55:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:09,431 INFO L495 AbstractCegarLoop]: Abstraction has 56490 states and 88086 transitions. [2022-07-22 17:55:09,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:55:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 56490 states and 88086 transitions. [2022-07-22 17:55:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:55:09,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:09,449 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] [2022-07-22 17:55:09,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:55:09,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1688097610, now seen corresponding path program 1 times [2022-07-22 17:55:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131053945] [2022-07-22 17:55:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:09,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:55:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:55:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:55:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:55:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:09,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:09,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131053945] [2022-07-22 17:55:09,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131053945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:09,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:09,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:09,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089186146] [2022-07-22 17:55:09,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:09,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:09,524 INFO L87 Difference]: Start difference. First operand 56490 states and 88086 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:55:15,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:15,536 INFO L93 Difference]: Finished difference Result 134367 states and 210531 transitions. [2022-07-22 17:55:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 17:55:15,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2022-07-22 17:55:15,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:15,805 INFO L225 Difference]: With dead ends: 134367 [2022-07-22 17:55:15,805 INFO L226 Difference]: Without dead ends: 77890 [2022-07-22 17:55:16,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-22 17:55:16,097 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 408 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:16,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 827 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 17:55:16,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77890 states. [2022-07-22 17:55:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77890 to 57072. [2022-07-22 17:55:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57072 states, 50498 states have (on average 1.464830290308527) internal successors, (73971), 51013 states have internal predecessors, (73971), 3877 states have call successors, (3877), 2312 states have call predecessors, (3877), 2696 states have return successors, (10626), 3874 states have call predecessors, (10626), 3877 states have call successors, (10626) [2022-07-22 17:55:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57072 states to 57072 states and 88474 transitions. [2022-07-22 17:55:19,800 INFO L78 Accepts]: Start accepts. Automaton has 57072 states and 88474 transitions. Word has length 91 [2022-07-22 17:55:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:19,800 INFO L495 AbstractCegarLoop]: Abstraction has 57072 states and 88474 transitions. [2022-07-22 17:55:19,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2022-07-22 17:55:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 57072 states and 88474 transitions. [2022-07-22 17:55:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 17:55:19,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:19,816 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] [2022-07-22 17:55:19,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:55:19,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash -667707640, now seen corresponding path program 1 times [2022-07-22 17:55:19,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:19,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129183787] [2022-07-22 17:55:19,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:19,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:55:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:55:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:55:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:55:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:19,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129183787] [2022-07-22 17:55:19,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129183787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:19,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:19,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:55:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561895282] [2022-07-22 17:55:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:19,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:55:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:55:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:55:19,872 INFO L87 Difference]: Start difference. First operand 57072 states and 88474 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-22 17:55:28,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:28,950 INFO L93 Difference]: Finished difference Result 192369 states and 297483 transitions. [2022-07-22 17:55:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:55:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2022-07-22 17:55:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:29,574 INFO L225 Difference]: With dead ends: 192369 [2022-07-22 17:55:29,574 INFO L226 Difference]: Without dead ends: 135310 [2022-07-22 17:55:29,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:55:29,682 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 917 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:29,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 984 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:55:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135310 states.