./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/product-lines/elevator_spec9_product25.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 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:36:01,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:36:01,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:36:01,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:36:01,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:36:01,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:36:01,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:36:01,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:36:01,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:36:01,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:36:01,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:36:01,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:36:01,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:36:01,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:36:01,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:36:01,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:36:01,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:36:01,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:36:01,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:36:01,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:36:01,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:36:01,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:36:01,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:36:01,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:36:01,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:36:01,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:36:01,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:36:01,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:36:01,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:36:01,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:36:01,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:36:01,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:36:01,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:36:01,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:36:01,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:36:01,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:36:01,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:36:01,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:36:01,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:36:01,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:36:01,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:36:01,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:36:01,334 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:36:01,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:36:01,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:36:01,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:36:01,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:36:01,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:36:01,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:36:01,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:36:01,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:36:01,370 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:36:01,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:36:01,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:36:01,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:36:01,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:36:01,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:36:01,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:36:01,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:36:01,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:36:01,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:36:01,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:36:01,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:36:01,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:36:01,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:36:01,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:36:01,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:36:01,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:36:01,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:36:01,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:36:01,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:36:01,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:36:01,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:36:01,375 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:36:01,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:36:01,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:36:01,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a [2022-07-13 17:36:01,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:36:01,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:36:01,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:36:01,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:36:01,626 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:36:01,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2022-07-13 17:36:01,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3e9c5c7/edbce4f3e9df47fb912dc738f2b7642a/FLAG22f6157fb [2022-07-13 17:36:02,192 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:36:02,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2022-07-13 17:36:02,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3e9c5c7/edbce4f3e9df47fb912dc738f2b7642a/FLAG22f6157fb [2022-07-13 17:36:02,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3e9c5c7/edbce4f3e9df47fb912dc738f2b7642a [2022-07-13 17:36:02,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:36:02,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:36:02,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:36:02,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:36:02,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:36:02,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:36:02" (1/1) ... [2022-07-13 17:36:02,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9f5886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:02, skipping insertion in model container [2022-07-13 17:36:02,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:36:02" (1/1) ... [2022-07-13 17:36:02,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:36:02,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:36:02,909 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/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2022-07-13 17:36:03,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:36:03,043 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:36:03,075 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/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2022-07-13 17:36:03,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:36:03,131 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:36:03,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03 WrapperNode [2022-07-13 17:36:03,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:36:03,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:36:03,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:36:03,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:36:03,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,206 INFO L137 Inliner]: procedures = 91, calls = 331, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 805 [2022-07-13 17:36:03,207 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:36:03,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:36:03,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:36:03,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:36:03,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:36:03,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:36:03,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:36:03,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:36:03,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (1/1) ... [2022-07-13 17:36:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:36:03,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:36:03,336 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) [2022-07-13 17:36:03,349 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 [2022-07-13 17:36:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:36:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:36:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:36:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-13 17:36:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-13 17:36:03,381 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:36:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:36:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:36:03,382 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:36:03,382 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:36:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:36:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:36:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:36:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:36:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:36:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:36:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:36:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:36:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:36:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:36:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:36:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:36:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:36:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:36:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:36:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:36:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:36:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:36:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:36:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:36:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:36:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:36:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:36:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-07-13 17:36:03,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-07-13 17:36:03,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:36:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:36:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:36:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:36:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:36:03,387 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:36:03,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:36:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:36:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:36:03,388 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:36:03,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:36:03,539 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:36:03,542 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:36:04,431 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:36:04,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:36:04,450 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:36:04,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:36:04 BoogieIcfgContainer [2022-07-13 17:36:04,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:36:04,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:36:04,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:36:04,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:36:04,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:36:02" (1/3) ... [2022-07-13 17:36:04,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b67af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:36:04, skipping insertion in model container [2022-07-13 17:36:04,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:36:03" (2/3) ... [2022-07-13 17:36:04,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b67af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:36:04, skipping insertion in model container [2022-07-13 17:36:04,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:36:04" (3/3) ... [2022-07-13 17:36:04,463 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2022-07-13 17:36:04,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:36:04,475 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:36:04,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:36:04,563 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@4ea8c516, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e3a9bac [2022-07-13 17:36:04,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:36:04,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2022-07-13 17:36:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 17:36:04,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:04,596 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] [2022-07-13 17:36:04,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash -681820971, now seen corresponding path program 1 times [2022-07-13 17:36:04,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:04,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774056744] [2022-07-13 17:36:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:04,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 17:36:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:36:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 17:36:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:36:05,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:05,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774056744] [2022-07-13 17:36:05,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774056744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:05,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:05,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:36:05,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854150298] [2022-07-13 17:36:05,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:05,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:36:05,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:36:05,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:36:05,532 INFO L87 Difference]: Start difference. First operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:36:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:12,775 INFO L93 Difference]: Finished difference Result 1464 states and 2544 transitions. [2022-07-13 17:36:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:36:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-07-13 17:36:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:12,797 INFO L225 Difference]: With dead ends: 1464 [2022-07-13 17:36:12,798 INFO L226 Difference]: Without dead ends: 944 [2022-07-13 17:36:12,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:36:12,809 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 1439 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 2994 SdHoareTripleChecker+Invalid, 5097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:12,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 2994 Invalid, 5097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [681 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-13 17:36:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-07-13 17:36:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 526. [2022-07-13 17:36:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 420 states have (on average 1.707142857142857) internal successors, (717), 439 states have internal predecessors, (717), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2022-07-13 17:36:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 882 transitions. [2022-07-13 17:36:12,970 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 882 transitions. Word has length 76 [2022-07-13 17:36:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:12,970 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 882 transitions. [2022-07-13 17:36:12,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:36:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 882 transitions. [2022-07-13 17:36:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-13 17:36:12,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:12,977 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] [2022-07-13 17:36:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:36:12,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash 620960083, now seen corresponding path program 1 times [2022-07-13 17:36:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869179807] [2022-07-13 17:36:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:12,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:36:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:36:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:36:13,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:13,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869179807] [2022-07-13 17:36:13,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869179807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:13,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:13,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:36:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010292430] [2022-07-13 17:36:13,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:36:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:36:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:36:13,380 INFO L87 Difference]: Start difference. First operand 526 states and 882 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:36:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:18,635 INFO L93 Difference]: Finished difference Result 1299 states and 2213 transitions. [2022-07-13 17:36:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:36:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2022-07-13 17:36:18,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:18,643 INFO L225 Difference]: With dead ends: 1299 [2022-07-13 17:36:18,643 INFO L226 Difference]: Without dead ends: 791 [2022-07-13 17:36:18,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:36:18,651 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1839 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 4614 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 5162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 4614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:18,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3551 Invalid, 5162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 4614 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 17:36:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-07-13 17:36:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 530. [2022-07-13 17:36:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 442 states have internal predecessors, (719), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (82), 79 states have call predecessors, (82), 80 states have call successors, (82) [2022-07-13 17:36:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 886 transitions. [2022-07-13 17:36:18,722 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 886 transitions. Word has length 82 [2022-07-13 17:36:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:18,722 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 886 transitions. [2022-07-13 17:36:18,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 17:36:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 886 transitions. [2022-07-13 17:36:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 17:36:18,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:18,726 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] [2022-07-13 17:36:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:36:18,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 479075021, now seen corresponding path program 1 times [2022-07-13 17:36:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188808957] [2022-07-13 17:36:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 17:36:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 17:36:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 17:36:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:36:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:36:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:19,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188808957] [2022-07-13 17:36:19,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188808957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:19,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:36:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681305274] [2022-07-13 17:36:19,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:36:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:19,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:36:19,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:36:19,101 INFO L87 Difference]: Start difference. First operand 530 states and 886 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:36:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:31,529 INFO L93 Difference]: Finished difference Result 2420 states and 4264 transitions. [2022-07-13 17:36:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 17:36:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2022-07-13 17:36:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:31,545 INFO L225 Difference]: With dead ends: 2420 [2022-07-13 17:36:31,545 INFO L226 Difference]: Without dead ends: 1908 [2022-07-13 17:36:31,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-07-13 17:36:31,552 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 2956 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 8367 mSolverCounterSat, 1229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3026 SdHoareTripleChecker+Valid, 4521 SdHoareTripleChecker+Invalid, 9596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 8367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:31,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3026 Valid, 4521 Invalid, 9596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1229 Valid, 8367 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-13 17:36:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-07-13 17:36:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1375. [2022-07-13 17:36:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1091 states have (on average 1.6608615948670944) internal successors, (1812), 1138 states have internal predecessors, (1812), 224 states have call successors, (224), 56 states have call predecessors, (224), 59 states have return successors, (258), 216 states have call predecessors, (258), 219 states have call successors, (258) [2022-07-13 17:36:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2294 transitions. [2022-07-13 17:36:31,739 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2294 transitions. Word has length 87 [2022-07-13 17:36:31,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:31,740 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 2294 transitions. [2022-07-13 17:36:31,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 17:36:31,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2294 transitions. [2022-07-13 17:36:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-13 17:36:31,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:31,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:36:31,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash -245229541, now seen corresponding path program 1 times [2022-07-13 17:36:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824172696] [2022-07-13 17:36:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 17:36:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 17:36:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:36:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:36:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:36:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:36:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:32,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824172696] [2022-07-13 17:36:32,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824172696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:32,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:32,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 17:36:32,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197180798] [2022-07-13 17:36:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:32,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 17:36:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 17:36:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:36:32,248 INFO L87 Difference]: Start difference. First operand 1375 states and 2294 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 17:36:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:41,516 INFO L93 Difference]: Finished difference Result 3513 states and 6016 transitions. [2022-07-13 17:36:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 17:36:41,517 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2022-07-13 17:36:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:41,531 INFO L225 Difference]: With dead ends: 3513 [2022-07-13 17:36:41,531 INFO L226 Difference]: Without dead ends: 1982 [2022-07-13 17:36:41,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-07-13 17:36:41,541 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 4132 mSDsluCounter, 3809 mSDsCounter, 0 mSdLazyCounter, 8289 mSolverCounterSat, 1109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 4703 SdHoareTripleChecker+Invalid, 9398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 8289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:41,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4187 Valid, 4703 Invalid, 9398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1109 Valid, 8289 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-07-13 17:36:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2022-07-13 17:36:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1450. [2022-07-13 17:36:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.6309834638816363) internal successors, (1874), 1198 states have internal predecessors, (1874), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2022-07-13 17:36:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2389 transitions. [2022-07-13 17:36:41,773 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2389 transitions. Word has length 96 [2022-07-13 17:36:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:41,773 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2389 transitions. [2022-07-13 17:36:41,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-13 17:36:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2389 transitions. [2022-07-13 17:36:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:36:41,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:41,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:36:41,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash -54702925, now seen corresponding path program 1 times [2022-07-13 17:36:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:41,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870782962] [2022-07-13 17:36:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 17:36:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 17:36:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:36:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:36:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:36:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870782962] [2022-07-13 17:36:42,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870782962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:42,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:42,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:36:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258176310] [2022-07-13 17:36:42,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:42,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:36:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:36:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:36:42,129 INFO L87 Difference]: Start difference. First operand 1450 states and 2389 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:45,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:45,433 INFO L93 Difference]: Finished difference Result 3392 states and 5718 transitions. [2022-07-13 17:36:45,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:36:45,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-07-13 17:36:45,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:45,446 INFO L225 Difference]: With dead ends: 3392 [2022-07-13 17:36:45,446 INFO L226 Difference]: Without dead ends: 1960 [2022-07-13 17:36:45,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:36:45,453 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1759 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 2732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:45,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 2041 Invalid, 2732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:36:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-07-13 17:36:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1450. [2022-07-13 17:36:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.630113141862489) internal successors, (1873), 1198 states have internal predecessors, (1873), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2022-07-13 17:36:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2388 transitions. [2022-07-13 17:36:45,657 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2388 transitions. Word has length 99 [2022-07-13 17:36:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:45,657 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2388 transitions. [2022-07-13 17:36:45,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:45,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2388 transitions. [2022-07-13 17:36:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:36:45,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:45,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:36:45,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1292774038, now seen corresponding path program 1 times [2022-07-13 17:36:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474101787] [2022-07-13 17:36:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:36:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-13 17:36:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:45,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:36:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:36:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:36:46,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474101787] [2022-07-13 17:36:46,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474101787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:46,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:46,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 17:36:46,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847810002] [2022-07-13 17:36:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 17:36:46,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 17:36:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:36:46,060 INFO L87 Difference]: Start difference. First operand 1450 states and 2388 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:36:51,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:51,528 INFO L93 Difference]: Finished difference Result 3472 states and 5951 transitions. [2022-07-13 17:36:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 17:36:51,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2022-07-13 17:36:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:51,544 INFO L225 Difference]: With dead ends: 3472 [2022-07-13 17:36:51,545 INFO L226 Difference]: Without dead ends: 2080 [2022-07-13 17:36:51,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-07-13 17:36:51,550 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 2032 mSDsluCounter, 3616 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 6585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:51,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 4495 Invalid, 6585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 17:36:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-07-13 17:36:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1474. [2022-07-13 17:36:51,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6192937123169682) internal successors, (1880), 1218 states have internal predecessors, (1880), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:36:51,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2431 transitions. [2022-07-13 17:36:51,795 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2431 transitions. Word has length 100 [2022-07-13 17:36:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:51,796 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2431 transitions. [2022-07-13 17:36:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:36:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2431 transitions. [2022-07-13 17:36:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:36:51,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:51,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:36:51,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:51,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:51,801 INFO L85 PathProgramCache]: Analyzing trace with hash 271876460, now seen corresponding path program 1 times [2022-07-13 17:36:51,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:51,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583155864] [2022-07-13 17:36:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:36:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 17:36:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:36:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:36:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:36:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:52,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583155864] [2022-07-13 17:36:52,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583155864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:52,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:52,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:36:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589758088] [2022-07-13 17:36:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:36:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:36:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:36:52,183 INFO L87 Difference]: Start difference. First operand 1474 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:55,479 INFO L93 Difference]: Finished difference Result 3408 states and 5773 transitions. [2022-07-13 17:36:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:36:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-07-13 17:36:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:55,494 INFO L225 Difference]: With dead ends: 3408 [2022-07-13 17:36:55,494 INFO L226 Difference]: Without dead ends: 1992 [2022-07-13 17:36:55,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:36:55,500 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1386 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:55,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 2060 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 17:36:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-13 17:36:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-07-13 17:36:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6149870801033592) internal successors, (1875), 1218 states have internal predecessors, (1875), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:36:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2426 transitions. [2022-07-13 17:36:55,753 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2426 transitions. Word has length 101 [2022-07-13 17:36:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:55,753 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2426 transitions. [2022-07-13 17:36:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2426 transitions. [2022-07-13 17:36:55,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:36:55,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:55,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:55,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:36:55,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash -186141934, now seen corresponding path program 1 times [2022-07-13 17:36:55,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:55,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184820230] [2022-07-13 17:36:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:55,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:36:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:36:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 17:36:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:36:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:36:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:36:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:36:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:56,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:36:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:56,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184820230] [2022-07-13 17:36:56,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184820230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:56,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:56,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:36:56,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771019036] [2022-07-13 17:36:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:56,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:36:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:36:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:36:56,063 INFO L87 Difference]: Start difference. First operand 1474 states and 2426 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:59,899 INFO L93 Difference]: Finished difference Result 3408 states and 5768 transitions. [2022-07-13 17:36:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:36:59,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2022-07-13 17:36:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:59,912 INFO L225 Difference]: With dead ends: 3408 [2022-07-13 17:36:59,912 INFO L226 Difference]: Without dead ends: 1992 [2022-07-13 17:36:59,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:36:59,919 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 965 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:59,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 2122 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:36:59,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-13 17:37:00,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-07-13 17:37:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6106804478897503) internal successors, (1870), 1218 states have internal predecessors, (1870), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2421 transitions. [2022-07-13 17:37:00,167 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2421 transitions. Word has length 102 [2022-07-13 17:37:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:00,167 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2421 transitions. [2022-07-13 17:37:00,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2421 transitions. [2022-07-13 17:37:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:37:00,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:00,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:00,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:37:00,171 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:00,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash -250701561, now seen corresponding path program 1 times [2022-07-13 17:37:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:00,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105482445] [2022-07-13 17:37:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:37:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:00,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:00,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105482445] [2022-07-13 17:37:00,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105482445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:00,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:00,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285134623] [2022-07-13 17:37:00,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:00,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:00,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:00,472 INFO L87 Difference]: Start difference. First operand 1474 states and 2421 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:04,312 INFO L93 Difference]: Finished difference Result 3408 states and 5763 transitions. [2022-07-13 17:37:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:37:04,312 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-07-13 17:37:04,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:04,321 INFO L225 Difference]: With dead ends: 3408 [2022-07-13 17:37:04,321 INFO L226 Difference]: Without dead ends: 1992 [2022-07-13 17:37:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:37:04,326 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 980 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 2125 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 17:37:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-13 17:37:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2022-07-13 17:37:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6063738156761413) internal successors, (1865), 1218 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:04,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2416 transitions. [2022-07-13 17:37:04,573 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2416 transitions. Word has length 103 [2022-07-13 17:37:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:04,573 INFO L495 AbstractCegarLoop]: Abstraction has 1474 states and 2416 transitions. [2022-07-13 17:37:04,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:04,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2416 transitions. [2022-07-13 17:37:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:37:04,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:04,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:37:04,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash 288097926, now seen corresponding path program 1 times [2022-07-13 17:37:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:04,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999637821] [2022-07-13 17:37:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 17:37:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:04,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999637821] [2022-07-13 17:37:04,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999637821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:04,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:04,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322016021] [2022-07-13 17:37:04,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:04,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:04,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:04,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:04,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:04,871 INFO L87 Difference]: Start difference. First operand 1474 states and 2416 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:08,875 INFO L93 Difference]: Finished difference Result 3423 states and 5778 transitions. [2022-07-13 17:37:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:37:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-07-13 17:37:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:08,886 INFO L225 Difference]: With dead ends: 3423 [2022-07-13 17:37:08,886 INFO L226 Difference]: Without dead ends: 2013 [2022-07-13 17:37:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:37:08,893 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1383 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:08,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2087 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 17:37:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-07-13 17:37:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1476. [2022-07-13 17:37:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6053310404127257) internal successors, (1867), 1220 states have internal predecessors, (1867), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2418 transitions. [2022-07-13 17:37:09,128 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2418 transitions. Word has length 103 [2022-07-13 17:37:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:09,128 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2418 transitions. [2022-07-13 17:37:09,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2418 transitions. [2022-07-13 17:37:09,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:37:09,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:09,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:09,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:37:09,132 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:09,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:09,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1002941299, now seen corresponding path program 1 times [2022-07-13 17:37:09,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:09,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962394424] [2022-07-13 17:37:09,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:09,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:09,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962394424] [2022-07-13 17:37:09,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962394424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:09,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:09,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:09,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421890959] [2022-07-13 17:37:09,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:09,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:09,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:09,442 INFO L87 Difference]: Start difference. First operand 1476 states and 2418 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:12,703 INFO L93 Difference]: Finished difference Result 3414 states and 5764 transitions. [2022-07-13 17:37:12,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:37:12,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-13 17:37:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:12,714 INFO L225 Difference]: With dead ends: 3414 [2022-07-13 17:37:12,714 INFO L226 Difference]: Without dead ends: 1996 [2022-07-13 17:37:12,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:37:12,719 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 1814 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:12,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 2008 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 17:37:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2022-07-13 17:37:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1476. [2022-07-13 17:37:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6010318142734308) internal successors, (1862), 1220 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2413 transitions. [2022-07-13 17:37:12,978 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2413 transitions. Word has length 104 [2022-07-13 17:37:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:12,978 INFO L495 AbstractCegarLoop]: Abstraction has 1476 states and 2413 transitions. [2022-07-13 17:37:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2413 transitions. [2022-07-13 17:37:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:37:12,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:12,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:12,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:37:12,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:12,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:12,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1927738160, now seen corresponding path program 1 times [2022-07-13 17:37:12,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:12,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548517145] [2022-07-13 17:37:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:12,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:13,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548517145] [2022-07-13 17:37:13,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548517145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:13,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:13,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808393178] [2022-07-13 17:37:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:13,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:13,311 INFO L87 Difference]: Start difference. First operand 1476 states and 2413 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:17,253 INFO L93 Difference]: Finished difference Result 3427 states and 5775 transitions. [2022-07-13 17:37:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:37:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-07-13 17:37:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:17,263 INFO L225 Difference]: With dead ends: 3427 [2022-07-13 17:37:17,263 INFO L226 Difference]: Without dead ends: 2017 [2022-07-13 17:37:17,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:37:17,267 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 975 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:17,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 2145 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 17:37:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-07-13 17:37:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1479. [2022-07-13 17:37:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5994854202401372) internal successors, (1865), 1223 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2416 transitions. [2022-07-13 17:37:17,556 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2416 transitions. Word has length 104 [2022-07-13 17:37:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:17,556 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 2416 transitions. [2022-07-13 17:37:17,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2416 transitions. [2022-07-13 17:37:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:37:17,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:17,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:37:17,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash 619202400, now seen corresponding path program 1 times [2022-07-13 17:37:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522381769] [2022-07-13 17:37:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:17,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:37:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522381769] [2022-07-13 17:37:17,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522381769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:17,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:17,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107309233] [2022-07-13 17:37:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:17,868 INFO L87 Difference]: Start difference. First operand 1479 states and 2416 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:21,143 INFO L93 Difference]: Finished difference Result 3463 states and 5818 transitions. [2022-07-13 17:37:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:37:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-13 17:37:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:21,159 INFO L225 Difference]: With dead ends: 3463 [2022-07-13 17:37:21,159 INFO L226 Difference]: Without dead ends: 2002 [2022-07-13 17:37:21,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:37:21,163 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1731 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2108 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 2108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:21,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 2030 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [514 Valid, 2108 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 17:37:21,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-07-13 17:37:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1479. [2022-07-13 17:37:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5986277873070327) internal successors, (1864), 1223 states have internal predecessors, (1864), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2415 transitions. [2022-07-13 17:37:21,394 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2415 transitions. Word has length 105 [2022-07-13 17:37:21,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:21,394 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 2415 transitions. [2022-07-13 17:37:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:21,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2415 transitions. [2022-07-13 17:37:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:37:21,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:21,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:21,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 17:37:21,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1030934399, now seen corresponding path program 1 times [2022-07-13 17:37:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:21,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368230727] [2022-07-13 17:37:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:21,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:21,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:37:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:21,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368230727] [2022-07-13 17:37:21,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368230727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:21,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:21,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:37:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389736290] [2022-07-13 17:37:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:21,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:37:21,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:21,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:37:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:37:21,747 INFO L87 Difference]: Start difference. First operand 1479 states and 2415 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:26,199 INFO L93 Difference]: Finished difference Result 3423 states and 5768 transitions. [2022-07-13 17:37:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:37:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-07-13 17:37:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:26,209 INFO L225 Difference]: With dead ends: 3423 [2022-07-13 17:37:26,209 INFO L226 Difference]: Without dead ends: 1992 [2022-07-13 17:37:26,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:37:26,214 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 1416 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 4333 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 3353 SdHoareTripleChecker+Invalid, 4719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 4333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:26,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 3353 Invalid, 4719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 4333 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:37:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-13 17:37:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1471. [2022-07-13 17:37:26,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1158 states have (on average 1.6001727115716753) internal successors, (1853), 1215 states have internal predecessors, (1853), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2404 transitions. [2022-07-13 17:37:26,452 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2404 transitions. Word has length 105 [2022-07-13 17:37:26,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:26,453 INFO L495 AbstractCegarLoop]: Abstraction has 1471 states and 2404 transitions. [2022-07-13 17:37:26,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2404 transitions. [2022-07-13 17:37:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:37:26,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:26,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:26,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 17:37:26,457 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1784898178, now seen corresponding path program 1 times [2022-07-13 17:37:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:26,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68679964] [2022-07-13 17:37:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:37:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:26,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:26,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68679964] [2022-07-13 17:37:26,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68679964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:26,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:37:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780914904] [2022-07-13 17:37:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:26,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:37:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:37:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:37:26,768 INFO L87 Difference]: Start difference. First operand 1471 states and 2404 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:31,302 INFO L93 Difference]: Finished difference Result 3423 states and 5764 transitions. [2022-07-13 17:37:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:37:31,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2022-07-13 17:37:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:31,317 INFO L225 Difference]: With dead ends: 3423 [2022-07-13 17:37:31,317 INFO L226 Difference]: Without dead ends: 2013 [2022-07-13 17:37:31,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:37:31,323 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1372 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 4285 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 4687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 4285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:31,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 3331 Invalid, 4687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 4285 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:37:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-07-13 17:37:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1475. [2022-07-13 17:37:31,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1162 states have (on average 1.5981067125645438) internal successors, (1857), 1219 states have internal predecessors, (1857), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2408 transitions. [2022-07-13 17:37:31,565 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2408 transitions. Word has length 105 [2022-07-13 17:37:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:31,566 INFO L495 AbstractCegarLoop]: Abstraction has 1475 states and 2408 transitions. [2022-07-13 17:37:31,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2408 transitions. [2022-07-13 17:37:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:37:31,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:31,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:31,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:37:31,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1225052650, now seen corresponding path program 1 times [2022-07-13 17:37:31,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:31,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840423648] [2022-07-13 17:37:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:31,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:37:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840423648] [2022-07-13 17:37:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840423648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:31,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:37:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608246485] [2022-07-13 17:37:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:37:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:37:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:37:31,906 INFO L87 Difference]: Start difference. First operand 1475 states and 2408 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:36,373 INFO L93 Difference]: Finished difference Result 3431 states and 5770 transitions. [2022-07-13 17:37:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:37:36,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2022-07-13 17:37:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:36,383 INFO L225 Difference]: With dead ends: 3431 [2022-07-13 17:37:36,384 INFO L226 Difference]: Without dead ends: 2021 [2022-07-13 17:37:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:37:36,387 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1773 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 4251 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 4778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:36,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 3306 Invalid, 4778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4251 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 17:37:36,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-07-13 17:37:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1480. [2022-07-13 17:37:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1167 states have (on average 1.5955441302485005) internal successors, (1862), 1224 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2022-07-13 17:37:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2413 transitions. [2022-07-13 17:37:36,642 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2413 transitions. Word has length 106 [2022-07-13 17:37:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:36,643 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2413 transitions. [2022-07-13 17:37:36,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 17:37:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2413 transitions. [2022-07-13 17:37:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:37:36,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:36,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:36,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:37:36,646 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1470623475, now seen corresponding path program 1 times [2022-07-13 17:37:36,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:36,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031357314] [2022-07-13 17:37:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:37:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:37,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031357314] [2022-07-13 17:37:37,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031357314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:37,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:37,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:37:37,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179832698] [2022-07-13 17:37:37,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:37:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:37:37,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:37:37,008 INFO L87 Difference]: Start difference. First operand 1480 states and 2413 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:44,284 INFO L93 Difference]: Finished difference Result 4849 states and 8352 transitions. [2022-07-13 17:37:44,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 17:37:44,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2022-07-13 17:37:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:44,297 INFO L225 Difference]: With dead ends: 4849 [2022-07-13 17:37:44,298 INFO L226 Difference]: Without dead ends: 3447 [2022-07-13 17:37:44,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2022-07-13 17:37:44,302 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 4094 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 4393 mSolverCounterSat, 1325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 4393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:44,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4158 Valid, 2635 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1325 Valid, 4393 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 17:37:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2022-07-13 17:37:44,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2518. [2022-07-13 17:37:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 1989 states have (on average 1.592760180995475) internal successors, (3168), 2078 states have internal predecessors, (3168), 396 states have call successors, (396), 102 states have call predecessors, (396), 132 states have return successors, (535), 397 states have call predecessors, (535), 391 states have call successors, (535) [2022-07-13 17:37:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4099 transitions. [2022-07-13 17:37:44,715 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4099 transitions. Word has length 107 [2022-07-13 17:37:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:44,715 INFO L495 AbstractCegarLoop]: Abstraction has 2518 states and 4099 transitions. [2022-07-13 17:37:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4099 transitions. [2022-07-13 17:37:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:37:44,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:44,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:37:44,717 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:44,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:44,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1495805578, now seen corresponding path program 1 times [2022-07-13 17:37:44,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:44,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717060158] [2022-07-13 17:37:44,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:44,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:44,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:37:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:45,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:37:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:45,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717060158] [2022-07-13 17:37:45,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717060158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:37:45,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175782095] [2022-07-13 17:37:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:45,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:37:45,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:37:45,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:37:45,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:37:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:45,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:37:45,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:37:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:45,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:37:45,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175782095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:45,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:37:45,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 17:37:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126079626] [2022-07-13 17:37:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:45,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:37:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:45,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:37:45,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:37:45,583 INFO L87 Difference]: Start difference. First operand 2518 states and 4099 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:48,431 INFO L93 Difference]: Finished difference Result 8499 states and 14324 transitions. [2022-07-13 17:37:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:37:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-13 17:37:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:48,460 INFO L225 Difference]: With dead ends: 8499 [2022-07-13 17:37:48,460 INFO L226 Difference]: Without dead ends: 6059 [2022-07-13 17:37:48,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:37:48,472 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 2655 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:48,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2778 Valid, 2429 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 17:37:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2022-07-13 17:37:49,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 5361. [2022-07-13 17:37:49,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4153 states have (on average 1.589212617385023) internal successors, (6600), 4358 states have internal predecessors, (6600), 932 states have call successors, (932), 199 states have call predecessors, (932), 275 states have return successors, (1338), 948 states have call predecessors, (1338), 927 states have call successors, (1338) [2022-07-13 17:37:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8870 transitions. [2022-07-13 17:37:49,482 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8870 transitions. Word has length 109 [2022-07-13 17:37:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:49,482 INFO L495 AbstractCegarLoop]: Abstraction has 5361 states and 8870 transitions. [2022-07-13 17:37:49,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8870 transitions. [2022-07-13 17:37:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 17:37:49,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:49,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:37:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 17:37:49,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 549562617, now seen corresponding path program 1 times [2022-07-13 17:37:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940272890] [2022-07-13 17:37:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:37:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:37:50,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940272890] [2022-07-13 17:37:50,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940272890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:37:50,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331275768] [2022-07-13 17:37:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:50,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:37:50,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:37:50,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:37:50,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:37:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:50,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:37:50,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:37:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:50,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:37:50,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331275768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:50,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:37:50,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 17:37:50,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50581260] [2022-07-13 17:37:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:50,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:37:50,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:37:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:37:50,539 INFO L87 Difference]: Start difference. First operand 5361 states and 8870 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:55,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:55,201 INFO L93 Difference]: Finished difference Result 18789 states and 32510 transitions. [2022-07-13 17:37:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:37:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-07-13 17:37:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:55,274 INFO L225 Difference]: With dead ends: 18789 [2022-07-13 17:37:55,274 INFO L226 Difference]: Without dead ends: 13506 [2022-07-13 17:37:55,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:37:55,305 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 2134 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:55,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 2657 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 17:37:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2022-07-13 17:37:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 11732. [2022-07-13 17:37:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11732 states, 8901 states have (on average 1.5828558588922592) internal successors, (14089), 9378 states have internal predecessors, (14089), 2254 states have call successors, (2254), 393 states have call predecessors, (2254), 576 states have return successors, (3410), 2320 states have call predecessors, (3410), 2249 states have call successors, (3410) [2022-07-13 17:37:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11732 states to 11732 states and 19753 transitions. [2022-07-13 17:37:58,010 INFO L78 Accepts]: Start accepts. Automaton has 11732 states and 19753 transitions. Word has length 110 [2022-07-13 17:37:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:58,010 INFO L495 AbstractCegarLoop]: Abstraction has 11732 states and 19753 transitions. [2022-07-13 17:37:58,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:37:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11732 states and 19753 transitions. [2022-07-13 17:37:58,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-13 17:37:58,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:58,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:58,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:37:58,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:37:58,227 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:58,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash -354495002, now seen corresponding path program 1 times [2022-07-13 17:37:58,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:58,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914730303] [2022-07-13 17:37:58,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:58,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:37:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:37:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:37:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:37:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:37:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:37:58,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:37:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914730303] [2022-07-13 17:37:58,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914730303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:37:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124954432] [2022-07-13 17:37:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:58,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:37:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:37:58,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:37:58,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:37:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:58,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:37:58,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:37:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:37:58,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:37:58,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124954432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:58,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:37:58,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 17:37:58,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644683532] [2022-07-13 17:37:58,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:58,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:37:58,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:58,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:37:58,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:37:58,989 INFO L87 Difference]: Start difference. First operand 11732 states and 19753 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:38:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:38:09,086 INFO L93 Difference]: Finished difference Result 42664 states and 76386 transitions. [2022-07-13 17:38:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:38:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-07-13 17:38:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:38:09,293 INFO L225 Difference]: With dead ends: 42664 [2022-07-13 17:38:09,293 INFO L226 Difference]: Without dead ends: 31010 [2022-07-13 17:38:09,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:38:09,384 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 3182 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:38:09,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3305 Valid, 2288 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 17:38:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31010 states. [2022-07-13 17:38:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31010 to 26424. [2022-07-13 17:38:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 19612 states have (on average 1.5754130124413623) internal successors, (30897), 20738 states have internal predecessors, (30897), 5593 states have call successors, (5593), 781 states have call predecessors, (5593), 1218 states have return successors, (9089), 5819 states have call predecessors, (9089), 5588 states have call successors, (9089) [2022-07-13 17:38:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 45579 transitions. [2022-07-13 17:38:16,361 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 45579 transitions. Word has length 111 [2022-07-13 17:38:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:38:16,362 INFO L495 AbstractCegarLoop]: Abstraction has 26424 states and 45579 transitions. [2022-07-13 17:38:16,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:38:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 45579 transitions. [2022-07-13 17:38:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:38:16,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:38:16,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:38:16,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 17:38:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:38:16,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:38:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:38:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 49192981, now seen corresponding path program 1 times [2022-07-13 17:38:16,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:38:16,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192731637] [2022-07-13 17:38:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:38:16,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:38:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:38:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:38:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:38:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:38:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:38:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:38:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:38:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:38:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:38:16,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:38:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192731637] [2022-07-13 17:38:16,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192731637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:38:16,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504557589] [2022-07-13 17:38:16,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:38:16,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:38:16,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:38:16,949 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:38:16,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 17:38:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:17,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 17:38:17,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:38:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:38:17,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:38:17,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504557589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:38:17,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:38:17,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-13 17:38:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903429779] [2022-07-13 17:38:17,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:38:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:38:17,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:38:17,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:38:17,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:38:17,334 INFO L87 Difference]: Start difference. First operand 26424 states and 45579 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:38:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:38:40,547 INFO L93 Difference]: Finished difference Result 99824 states and 188563 transitions. [2022-07-13 17:38:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:38:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-13 17:38:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:38:41,412 INFO L225 Difference]: With dead ends: 99824 [2022-07-13 17:38:41,412 INFO L226 Difference]: Without dead ends: 73478 [2022-07-13 17:38:41,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:38:41,722 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 2145 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:38:41,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 2620 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 17:38:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73478 states. [2022-07-13 17:38:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73478 to 61368. [2022-07-13 17:38:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61368 states, 44559 states have (on average 1.5681007203931865) internal successors, (69873), 47258 states have internal predecessors, (69873), 14196 states have call successors, (14196), 1557 states have call predecessors, (14196), 2612 states have return successors, (25862), 14922 states have call predecessors, (25862), 14191 states have call successors, (25862) [2022-07-13 17:38:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61368 states to 61368 states and 109931 transitions. [2022-07-13 17:38:59,277 INFO L78 Accepts]: Start accepts. Automaton has 61368 states and 109931 transitions. Word has length 112 [2022-07-13 17:38:59,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:38:59,278 INFO L495 AbstractCegarLoop]: Abstraction has 61368 states and 109931 transitions. [2022-07-13 17:38:59,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:38:59,278 INFO L276 IsEmpty]: Start isEmpty. Operand 61368 states and 109931 transitions. [2022-07-13 17:38:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 17:38:59,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:38:59,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:38:59,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 17:38:59,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:38:59,489 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:38:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:38:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1815372179, now seen corresponding path program 1 times [2022-07-13 17:38:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:38:59,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061005238] [2022-07-13 17:38:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:38:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:38:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:38:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 17:38:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:38:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:38:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 17:38:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 17:38:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 17:38:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:38:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:38:59,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:38:59,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061005238] [2022-07-13 17:38:59,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061005238] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:38:59,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647389151] [2022-07-13 17:38:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:38:59,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:38:59,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:38:59,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:38:59,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 17:39:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:39:00,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 17:39:00,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:39:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:39:00,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:39:00,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647389151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:39:00,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:39:00,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 17:39:00,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247823229] [2022-07-13 17:39:00,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:39:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:39:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:39:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:39:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:39:00,067 INFO L87 Difference]: Start difference. First operand 61368 states and 109931 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)