./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.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/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:11:02,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:11:02,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:11:02,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:11:02,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:11:02,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:11:02,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:11:02,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:11:02,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:11:02,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:11:02,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:11:02,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:11:02,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:11:02,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:11:02,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:11:02,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:11:02,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:11:02,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:11:02,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:11:02,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:11:02,295 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:11:02,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:11:02,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:11:02,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:11:02,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:11:02,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:11:02,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:11:02,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:11:02,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:11:02,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:11:02,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:11:02,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:11:02,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:11:02,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:11:02,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:11:02,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:11:02,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:11:02,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:11:02,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:11:02,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:11:02,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:11:02,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:11:02,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:11:02,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:11:02,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:11:02,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:11:02,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:11:02,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:11:02,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:11:02,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:11:02,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:11:02,339 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:11:02,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:11:02,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:11:02,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:11:02,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:11:02,341 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:11:02,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:11:02,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:11:02,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:11:02,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:11:02,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:11:02,343 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:11:02,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:11:02,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:11:02,343 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2022-07-13 21:11:02,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:11:02,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:11:02,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:11:02,553 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:11:02,553 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:11:02,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-13 21:11:02,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1d1abb0/d3a5579c5a70453e92d9f853fe167d08/FLAGbb687c98d [2022-07-13 21:11:02,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:11:02,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-13 21:11:02,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1d1abb0/d3a5579c5a70453e92d9f853fe167d08/FLAGbb687c98d [2022-07-13 21:11:03,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a1d1abb0/d3a5579c5a70453e92d9f853fe167d08 [2022-07-13 21:11:03,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:11:03,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:11:03,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:11:03,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:11:03,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:11:03,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1651333c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03, skipping insertion in model container [2022-07-13 21:11:03,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:11:03,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:11:03,591 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/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2022-07-13 21:11:03,641 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/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2022-07-13 21:11:03,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:11:03,694 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:11:03,707 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/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[914,927] [2022-07-13 21:11:03,727 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/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2022-07-13 21:11:03,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:11:03,758 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:11:03,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03 WrapperNode [2022-07-13 21:11:03,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:11:03,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:11:03,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:11:03,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:11:03,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,796 INFO L137 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 518 [2022-07-13 21:11:03,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:11:03,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:11:03,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:11:03,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:11:03,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:11:03,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:11:03,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:11:03,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:11:03,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (1/1) ... [2022-07-13 21:11:03,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:11:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:03,876 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 21:11:03,878 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 21:11:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:11:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:11:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:11:03,899 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:11:03,899 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:11:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:11:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:11:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:11:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:11:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:11:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:11:03,900 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:11:03,900 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:11:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:11:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:11:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:11:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:11:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:11:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:11:03,901 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:11:03,901 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:11:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:11:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:11:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:11:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:11:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:11:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:11:03,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:11:03,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:11:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:11:03,903 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:11:03,903 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:11:04,020 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:11:04,021 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:11:04,447 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:11:04,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:11:04,458 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-13 21:11:04,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:11:04 BoogieIcfgContainer [2022-07-13 21:11:04,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:11:04,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:11:04,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:11:04,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:11:04,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:11:03" (1/3) ... [2022-07-13 21:11:04,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2329113b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:11:04, skipping insertion in model container [2022-07-13 21:11:04,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:11:03" (2/3) ... [2022-07-13 21:11:04,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2329113b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:11:04, skipping insertion in model container [2022-07-13 21:11:04,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:11:04" (3/3) ... [2022-07-13 21:11:04,481 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-13 21:11:04,491 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:11:04,491 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:11:04,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:11:04,549 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@2e74fabe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25b0d45e [2022-07-13 21:11:04,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:11:04,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-13 21:11:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:11:04,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:04,568 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] [2022-07-13 21:11:04,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:04,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:04,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945575, now seen corresponding path program 1 times [2022-07-13 21:11:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:04,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450381894] [2022-07-13 21:11:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:04,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:04,848 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 21:11:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:04,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450381894] [2022-07-13 21:11:04,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450381894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:04,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:04,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:11:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551316123] [2022-07-13 21:11:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:04,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:11:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:11:04,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:04,878 INFO L87 Difference]: Start difference. First operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:05,501 INFO L93 Difference]: Finished difference Result 632 states and 960 transitions. [2022-07-13 21:11:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:11:05,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:11:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:05,511 INFO L225 Difference]: With dead ends: 632 [2022-07-13 21:11:05,511 INFO L226 Difference]: Without dead ends: 383 [2022-07-13 21:11:05,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:11:05,516 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 678 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:05,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1214 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:11:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-13 21:11:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2022-07-13 21:11:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 278 states have (on average 1.4496402877697843) internal successors, (403), 284 states have internal predecessors, (403), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-13 21:11:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 490 transitions. [2022-07-13 21:11:05,580 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 490 transitions. Word has length 65 [2022-07-13 21:11:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:05,580 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 490 transitions. [2022-07-13 21:11:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:05,580 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 490 transitions. [2022-07-13 21:11:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:11:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:05,583 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] [2022-07-13 21:11:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:11:05,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1779235770, now seen corresponding path program 1 times [2022-07-13 21:11:05,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:05,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101377365] [2022-07-13 21:11:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:05,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101377365] [2022-07-13 21:11:05,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101377365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:05,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:05,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:11:05,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345140853] [2022-07-13 21:11:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:05,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:11:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:11:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:05,661 INFO L87 Difference]: Start difference. First operand 344 states and 490 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:06,362 INFO L93 Difference]: Finished difference Result 691 states and 967 transitions. [2022-07-13 21:11:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:11:06,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:11:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:06,366 INFO L225 Difference]: With dead ends: 691 [2022-07-13 21:11:06,366 INFO L226 Difference]: Without dead ends: 514 [2022-07-13 21:11:06,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:11:06,367 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 726 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:06,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1251 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:11:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-13 21:11:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2022-07-13 21:11:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 354 states have (on average 1.4322033898305084) internal successors, (507), 362 states have internal predecessors, (507), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2022-07-13 21:11:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 624 transitions. [2022-07-13 21:11:06,394 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 624 transitions. Word has length 65 [2022-07-13 21:11:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:06,394 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 624 transitions. [2022-07-13 21:11:06,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 624 transitions. [2022-07-13 21:11:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:11:06,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:06,398 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] [2022-07-13 21:11:06,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:11:06,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:06,399 INFO L85 PathProgramCache]: Analyzing trace with hash 487145416, now seen corresponding path program 1 times [2022-07-13 21:11:06,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:06,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993896878] [2022-07-13 21:11:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:06,481 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 21:11:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:06,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993896878] [2022-07-13 21:11:06,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993896878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:11:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663546946] [2022-07-13 21:11:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:11:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:11:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:11:06,483 INFO L87 Difference]: Start difference. First operand 440 states and 624 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:07,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:07,012 INFO L93 Difference]: Finished difference Result 741 states and 1038 transitions. [2022-07-13 21:11:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:11:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:11:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:07,014 INFO L225 Difference]: With dead ends: 741 [2022-07-13 21:11:07,015 INFO L226 Difference]: Without dead ends: 474 [2022-07-13 21:11:07,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:11:07,016 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 429 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:07,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1394 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:11:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-13 21:11:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 445. [2022-07-13 21:11:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 366 states have internal predecessors, (509), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-13 21:11:07,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 627 transitions. [2022-07-13 21:11:07,035 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 627 transitions. Word has length 65 [2022-07-13 21:11:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:07,035 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 627 transitions. [2022-07-13 21:11:07,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 627 transitions. [2022-07-13 21:11:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:11:07,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:07,037 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] [2022-07-13 21:11:07,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:11:07,038 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:07,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:07,038 INFO L85 PathProgramCache]: Analyzing trace with hash -542213882, now seen corresponding path program 1 times [2022-07-13 21:11:07,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:07,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722449892] [2022-07-13 21:11:07,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:07,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,114 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 21:11:07,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:07,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722449892] [2022-07-13 21:11:07,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722449892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:07,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:07,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:11:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033084467] [2022-07-13 21:11:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:07,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:11:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:11:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:11:07,117 INFO L87 Difference]: Start difference. First operand 445 states and 627 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:07,609 INFO L93 Difference]: Finished difference Result 763 states and 1060 transitions. [2022-07-13 21:11:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:11:07,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:11:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:07,612 INFO L225 Difference]: With dead ends: 763 [2022-07-13 21:11:07,612 INFO L226 Difference]: Without dead ends: 491 [2022-07-13 21:11:07,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:11:07,614 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 430 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:07,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1392 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:11:07,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-13 21:11:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 460. [2022-07-13 21:11:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 370 states have (on average 1.4081081081081082) internal successors, (521), 378 states have internal predecessors, (521), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2022-07-13 21:11:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2022-07-13 21:11:07,656 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 65 [2022-07-13 21:11:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:07,656 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2022-07-13 21:11:07,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2022-07-13 21:11:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:11:07,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:07,658 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] [2022-07-13 21:11:07,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:11:07,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:07,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 843989512, now seen corresponding path program 1 times [2022-07-13 21:11:07,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:07,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993444242] [2022-07-13 21:11:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:07,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:07,762 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 21:11:07,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:07,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993444242] [2022-07-13 21:11:07,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993444242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:07,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:07,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536830727] [2022-07-13 21:11:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:07,764 INFO L87 Difference]: Start difference. First operand 460 states and 642 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:08,123 INFO L93 Difference]: Finished difference Result 1074 states and 1461 transitions. [2022-07-13 21:11:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:11:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:11:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:08,127 INFO L225 Difference]: With dead ends: 1074 [2022-07-13 21:11:08,127 INFO L226 Difference]: Without dead ends: 790 [2022-07-13 21:11:08,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:11:08,129 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 680 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:08,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 990 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:11:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-07-13 21:11:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 738. [2022-07-13 21:11:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 584 states have (on average 1.3664383561643836) internal successors, (798), 599 states have internal predecessors, (798), 87 states have call successors, (87), 49 states have call predecessors, (87), 65 states have return successors, (126), 96 states have call predecessors, (126), 85 states have call successors, (126) [2022-07-13 21:11:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1011 transitions. [2022-07-13 21:11:08,152 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1011 transitions. Word has length 65 [2022-07-13 21:11:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:08,152 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1011 transitions. [2022-07-13 21:11:08,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:11:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1011 transitions. [2022-07-13 21:11:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:11:08,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:08,154 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] [2022-07-13 21:11:08,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:11:08,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:08,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1077063563, now seen corresponding path program 1 times [2022-07-13 21:11:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405354013] [2022-07-13 21:11:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,196 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 21:11:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:08,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405354013] [2022-07-13 21:11:08,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405354013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:08,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:08,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869200592] [2022-07-13 21:11:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:08,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:08,198 INFO L87 Difference]: Start difference. First operand 738 states and 1011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:08,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:08,529 INFO L93 Difference]: Finished difference Result 1885 states and 2528 transitions. [2022-07-13 21:11:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:11:08,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:11:08,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:08,534 INFO L225 Difference]: With dead ends: 1885 [2022-07-13 21:11:08,535 INFO L226 Difference]: Without dead ends: 1302 [2022-07-13 21:11:08,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:08,537 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 650 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:08,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 806 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:11:08,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-07-13 21:11:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1195. [2022-07-13 21:11:08,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 943 states have (on average 1.335100742311771) internal successors, (1259), 961 states have internal predecessors, (1259), 130 states have call successors, (130), 91 states have call predecessors, (130), 120 states have return successors, (194), 149 states have call predecessors, (194), 128 states have call successors, (194) [2022-07-13 21:11:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1583 transitions. [2022-07-13 21:11:08,574 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1583 transitions. Word has length 66 [2022-07-13 21:11:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:08,575 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1583 transitions. [2022-07-13 21:11:08,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1583 transitions. [2022-07-13 21:11:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:11:08,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:08,577 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] [2022-07-13 21:11:08,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:11:08,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:08,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1759664074, now seen corresponding path program 1 times [2022-07-13 21:11:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:08,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956138974] [2022-07-13 21:11:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:08,659 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 21:11:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:08,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956138974] [2022-07-13 21:11:08,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956138974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:08,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:08,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418681963] [2022-07-13 21:11:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:08,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:08,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:08,662 INFO L87 Difference]: Start difference. First operand 1195 states and 1583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:08,966 INFO L93 Difference]: Finished difference Result 3275 states and 4283 transitions. [2022-07-13 21:11:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:11:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:11:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:08,974 INFO L225 Difference]: With dead ends: 3275 [2022-07-13 21:11:08,974 INFO L226 Difference]: Without dead ends: 2255 [2022-07-13 21:11:08,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:11:08,977 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 858 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:08,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 696 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:11:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-07-13 21:11:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2065. [2022-07-13 21:11:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1613 states have (on average 1.2982021078735275) internal successors, (2094), 1645 states have internal predecessors, (2094), 228 states have call successors, (228), 175 states have call predecessors, (228), 222 states have return successors, (338), 251 states have call predecessors, (338), 226 states have call successors, (338) [2022-07-13 21:11:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2660 transitions. [2022-07-13 21:11:09,052 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2660 transitions. Word has length 66 [2022-07-13 21:11:09,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:09,053 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 2660 transitions. [2022-07-13 21:11:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2660 transitions. [2022-07-13 21:11:09,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 21:11:09,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:09,055 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] [2022-07-13 21:11:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:11:09,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash 825996842, now seen corresponding path program 1 times [2022-07-13 21:11:09,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:09,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022410886] [2022-07-13 21:11:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:09,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,103 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 21:11:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022410886] [2022-07-13 21:11:09,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022410886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:09,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:09,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656501697] [2022-07-13 21:11:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:09,105 INFO L87 Difference]: Start difference. First operand 2065 states and 2660 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:09,461 INFO L93 Difference]: Finished difference Result 4911 states and 6260 transitions. [2022-07-13 21:11:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:11:09,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-13 21:11:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:09,473 INFO L225 Difference]: With dead ends: 4911 [2022-07-13 21:11:09,473 INFO L226 Difference]: Without dead ends: 3021 [2022-07-13 21:11:09,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:09,478 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 666 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:09,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 896 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:11:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-07-13 21:11:09,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2801. [2022-07-13 21:11:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2183 states have (on average 1.2835547411818597) internal successors, (2802), 2225 states have internal predecessors, (2802), 308 states have call successors, (308), 245 states have call predecessors, (308), 308 states have return successors, (451), 337 states have call predecessors, (451), 306 states have call successors, (451) [2022-07-13 21:11:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3561 transitions. [2022-07-13 21:11:09,569 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3561 transitions. Word has length 72 [2022-07-13 21:11:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:09,569 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 3561 transitions. [2022-07-13 21:11:09,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3561 transitions. [2022-07-13 21:11:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 21:11:09,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:09,571 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:11:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:11:09,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash -680171098, now seen corresponding path program 1 times [2022-07-13 21:11:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850998395] [2022-07-13 21:11:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:09,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850998395] [2022-07-13 21:11:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850998395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:09,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917579003] [2022-07-13 21:11:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:09,635 INFO L87 Difference]: Start difference. First operand 2801 states and 3561 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:11:10,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:10,007 INFO L93 Difference]: Finished difference Result 3527 states and 4444 transitions. [2022-07-13 21:11:10,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:11:10,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-13 21:11:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:10,019 INFO L225 Difference]: With dead ends: 3527 [2022-07-13 21:11:10,019 INFO L226 Difference]: Without dead ends: 3524 [2022-07-13 21:11:10,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:11:10,020 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1202 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:10,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 710 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:11:10,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2022-07-13 21:11:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3271. [2022-07-13 21:11:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2548 states have (on average 1.2770800627943486) internal successors, (3254), 2595 states have internal predecessors, (3254), 356 states have call successors, (356), 287 states have call predecessors, (356), 365 states have return successors, (528), 395 states have call predecessors, (528), 355 states have call successors, (528) [2022-07-13 21:11:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4138 transitions. [2022-07-13 21:11:10,148 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4138 transitions. Word has length 73 [2022-07-13 21:11:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:10,149 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4138 transitions. [2022-07-13 21:11:10,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:11:10,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4138 transitions. [2022-07-13 21:11:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 21:11:10,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:10,151 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:11:10,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:11:10,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:10,152 INFO L85 PathProgramCache]: Analyzing trace with hash 388759028, now seen corresponding path program 1 times [2022-07-13 21:11:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:10,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109990786] [2022-07-13 21:11:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109990786] [2022-07-13 21:11:10,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109990786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:10,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987548265] [2022-07-13 21:11:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:10,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:10,235 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 21:11:10,273 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 21:11:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:10,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:11:10,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:10,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:11:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:10,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987548265] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:11:10,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:11:10,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-13 21:11:10,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438051779] [2022-07-13 21:11:10,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:11:10,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:11:10,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:11:10,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:11:10,718 INFO L87 Difference]: Start difference. First operand 3271 states and 4138 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:11:12,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:12,161 INFO L93 Difference]: Finished difference Result 7548 states and 9468 transitions. [2022-07-13 21:11:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 21:11:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-13 21:11:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:12,202 INFO L225 Difference]: With dead ends: 7548 [2022-07-13 21:11:12,203 INFO L226 Difference]: Without dead ends: 7545 [2022-07-13 21:11:12,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-13 21:11:12,224 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1209 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:12,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1862 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:11:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2022-07-13 21:11:12,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5017. [2022-07-13 21:11:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3914 states have (on average 1.275932549821155) internal successors, (4994), 3985 states have internal predecessors, (4994), 536 states have call successors, (536), 441 states have call predecessors, (536), 565 states have return successors, (806), 597 states have call predecessors, (806), 535 states have call successors, (806) [2022-07-13 21:11:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6336 transitions. [2022-07-13 21:11:12,521 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6336 transitions. Word has length 74 [2022-07-13 21:11:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:12,521 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6336 transitions. [2022-07-13 21:11:12,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:11:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6336 transitions. [2022-07-13 21:11:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 21:11:12,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:12,523 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-13 21:11:12,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 21:11:12,739 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,SelfDestructingSolverStorable9 [2022-07-13 21:11:12,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1322076070, now seen corresponding path program 2 times [2022-07-13 21:11:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:12,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98366272] [2022-07-13 21:11:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:11:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98366272] [2022-07-13 21:11:12,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98366272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:12,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:12,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:12,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232007231] [2022-07-13 21:11:12,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:12,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:12,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:12,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:12,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:12,792 INFO L87 Difference]: Start difference. First operand 5017 states and 6336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:11:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:13,169 INFO L93 Difference]: Finished difference Result 7607 states and 9625 transitions. [2022-07-13 21:11:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:11:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-13 21:11:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:13,181 INFO L225 Difference]: With dead ends: 7607 [2022-07-13 21:11:13,181 INFO L226 Difference]: Without dead ends: 3644 [2022-07-13 21:11:13,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:11:13,188 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 726 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:13,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 817 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:11:13,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-07-13 21:11:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3437. [2022-07-13 21:11:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2682 states have (on average 1.2580164056674124) internal successors, (3374), 2731 states have internal predecessors, (3374), 372 states have call successors, (372), 301 states have call predecessors, (372), 381 states have return successors, (536), 411 states have call predecessors, (536), 371 states have call successors, (536) [2022-07-13 21:11:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4282 transitions. [2022-07-13 21:11:13,366 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4282 transitions. Word has length 77 [2022-07-13 21:11:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:13,366 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 4282 transitions. [2022-07-13 21:11:13,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:11:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4282 transitions. [2022-07-13 21:11:13,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:13,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:13,369 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] [2022-07-13 21:11:13,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:11:13,369 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash -360800699, now seen corresponding path program 1 times [2022-07-13 21:11:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861520484] [2022-07-13 21:11:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:13,423 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 21:11:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861520484] [2022-07-13 21:11:13,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861520484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:13,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:13,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:13,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842305099] [2022-07-13 21:11:13,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:13,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:13,424 INFO L87 Difference]: Start difference. First operand 3437 states and 4282 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:14,159 INFO L93 Difference]: Finished difference Result 3805 states and 4849 transitions. [2022-07-13 21:11:14,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:11:14,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:14,189 INFO L225 Difference]: With dead ends: 3805 [2022-07-13 21:11:14,190 INFO L226 Difference]: Without dead ends: 3664 [2022-07-13 21:11:14,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:14,192 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 736 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:14,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 918 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:11:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2022-07-13 21:11:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3579. [2022-07-13 21:11:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 2805 states have (on average 1.2695187165775401) internal successors, (3561), 2855 states have internal predecessors, (3561), 384 states have call successors, (384), 307 states have call predecessors, (384), 388 states have return successors, (551), 423 states have call predecessors, (551), 383 states have call successors, (551) [2022-07-13 21:11:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4496 transitions. [2022-07-13 21:11:14,400 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4496 transitions. Word has length 79 [2022-07-13 21:11:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 4496 transitions. [2022-07-13 21:11:14,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4496 transitions. [2022-07-13 21:11:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:14,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:14,403 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] [2022-07-13 21:11:14,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:11:14,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -123752503, now seen corresponding path program 1 times [2022-07-13 21:11:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119320519] [2022-07-13 21:11:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:14,460 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 21:11:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119320519] [2022-07-13 21:11:14,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119320519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:14,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:14,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:14,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817896818] [2022-07-13 21:11:14,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:14,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:14,461 INFO L87 Difference]: Start difference. First operand 3579 states and 4496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:15,349 INFO L93 Difference]: Finished difference Result 4133 states and 5342 transitions. [2022-07-13 21:11:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:11:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:15,359 INFO L225 Difference]: With dead ends: 4133 [2022-07-13 21:11:15,359 INFO L226 Difference]: Without dead ends: 3850 [2022-07-13 21:11:15,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:11:15,361 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 729 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:15,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1419 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:11:15,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2022-07-13 21:11:15,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3712. [2022-07-13 21:11:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2919 states have (on average 1.277834874957177) internal successors, (3730), 2970 states have internal predecessors, (3730), 396 states have call successors, (396), 313 states have call predecessors, (396), 395 states have return successors, (565), 436 states have call predecessors, (565), 395 states have call successors, (565) [2022-07-13 21:11:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4691 transitions. [2022-07-13 21:11:15,522 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4691 transitions. Word has length 79 [2022-07-13 21:11:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:15,522 INFO L495 AbstractCegarLoop]: Abstraction has 3712 states and 4691 transitions. [2022-07-13 21:11:15,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4691 transitions. [2022-07-13 21:11:15,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:15,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:15,525 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] [2022-07-13 21:11:15,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:11:15,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -178145401, now seen corresponding path program 1 times [2022-07-13 21:11:15,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:15,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211463890] [2022-07-13 21:11:15,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:15,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:15,588 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 21:11:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:15,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211463890] [2022-07-13 21:11:15,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211463890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:15,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:15,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148187434] [2022-07-13 21:11:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:15,590 INFO L87 Difference]: Start difference. First operand 3712 states and 4691 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:16,494 INFO L93 Difference]: Finished difference Result 4615 states and 6065 transitions. [2022-07-13 21:11:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:11:16,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:16,515 INFO L225 Difference]: With dead ends: 4615 [2022-07-13 21:11:16,516 INFO L226 Difference]: Without dead ends: 4199 [2022-07-13 21:11:16,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:11:16,519 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 726 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:16,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1411 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:11:16,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2022-07-13 21:11:16,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 3979. [2022-07-13 21:11:16,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.292566709021601) internal successors, (4069), 3201 states have internal predecessors, (4069), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-13 21:11:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5086 transitions. [2022-07-13 21:11:16,709 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5086 transitions. Word has length 79 [2022-07-13 21:11:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:16,709 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5086 transitions. [2022-07-13 21:11:16,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:16,710 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5086 transitions. [2022-07-13 21:11:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:16,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:16,712 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] [2022-07-13 21:11:16,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:11:16,712 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -595542007, now seen corresponding path program 1 times [2022-07-13 21:11:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:16,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968056526] [2022-07-13 21:11:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:16,767 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 21:11:16,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968056526] [2022-07-13 21:11:16,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968056526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:16,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:16,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758896210] [2022-07-13 21:11:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:16,770 INFO L87 Difference]: Start difference. First operand 3979 states and 5086 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:17,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:17,409 INFO L93 Difference]: Finished difference Result 4872 states and 6453 transitions. [2022-07-13 21:11:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:17,418 INFO L225 Difference]: With dead ends: 4872 [2022-07-13 21:11:17,418 INFO L226 Difference]: Without dead ends: 4189 [2022-07-13 21:11:17,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:17,421 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 599 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:17,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 906 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:11:17,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-07-13 21:11:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 3979. [2022-07-13 21:11:17,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2909783989834815) internal successors, (4064), 3201 states have internal predecessors, (4064), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-13 21:11:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5081 transitions. [2022-07-13 21:11:17,603 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5081 transitions. Word has length 79 [2022-07-13 21:11:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:17,603 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5081 transitions. [2022-07-13 21:11:17,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5081 transitions. [2022-07-13 21:11:17,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:17,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:17,606 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] [2022-07-13 21:11:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:11:17,606 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash 83730247, now seen corresponding path program 1 times [2022-07-13 21:11:17,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:17,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288569359] [2022-07-13 21:11:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:17,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:17,666 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 21:11:17,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288569359] [2022-07-13 21:11:17,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288569359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:17,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:17,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875311252] [2022-07-13 21:11:17,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:17,668 INFO L87 Difference]: Start difference. First operand 3979 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:18,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:18,228 INFO L93 Difference]: Finished difference Result 4866 states and 6427 transitions. [2022-07-13 21:11:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:18,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:18,237 INFO L225 Difference]: With dead ends: 4866 [2022-07-13 21:11:18,237 INFO L226 Difference]: Without dead ends: 4183 [2022-07-13 21:11:18,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:18,239 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 718 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:18,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 760 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:11:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-07-13 21:11:18,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3979. [2022-07-13 21:11:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2893900889453622) internal successors, (4059), 3201 states have internal predecessors, (4059), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-13 21:11:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5076 transitions. [2022-07-13 21:11:18,403 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5076 transitions. Word has length 79 [2022-07-13 21:11:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:18,403 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5076 transitions. [2022-07-13 21:11:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5076 transitions. [2022-07-13 21:11:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:18,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:18,406 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] [2022-07-13 21:11:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:11:18,406 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2045304905, now seen corresponding path program 1 times [2022-07-13 21:11:18,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:18,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223272196] [2022-07-13 21:11:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:18,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:18,458 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 21:11:18,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:18,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223272196] [2022-07-13 21:11:18,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223272196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:18,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:18,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:18,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442685432] [2022-07-13 21:11:18,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:18,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:18,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:18,459 INFO L87 Difference]: Start difference. First operand 3979 states and 5076 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:19,521 INFO L93 Difference]: Finished difference Result 5687 states and 7616 transitions. [2022-07-13 21:11:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:11:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:19,533 INFO L225 Difference]: With dead ends: 5687 [2022-07-13 21:11:19,533 INFO L226 Difference]: Without dead ends: 5004 [2022-07-13 21:11:19,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:11:19,535 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 804 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:19,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1379 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:11:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2022-07-13 21:11:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4490. [2022-07-13 21:11:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.3100083635349875) internal successors, (4699), 3644 states have internal predecessors, (4699), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-13 21:11:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5826 transitions. [2022-07-13 21:11:19,712 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5826 transitions. Word has length 79 [2022-07-13 21:11:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:19,712 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5826 transitions. [2022-07-13 21:11:19,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5826 transitions. [2022-07-13 21:11:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:19,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:19,715 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] [2022-07-13 21:11:19,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:11:19,715 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:19,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2047838457, now seen corresponding path program 1 times [2022-07-13 21:11:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:19,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912205586] [2022-07-13 21:11:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:19,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:19,818 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 21:11:19,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:19,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912205586] [2022-07-13 21:11:19,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912205586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:19,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:19,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127727756] [2022-07-13 21:11:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:19,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:19,822 INFO L87 Difference]: Start difference. First operand 4490 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:20,371 INFO L93 Difference]: Finished difference Result 5993 states and 8077 transitions. [2022-07-13 21:11:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:20,385 INFO L225 Difference]: With dead ends: 5993 [2022-07-13 21:11:20,385 INFO L226 Difference]: Without dead ends: 4799 [2022-07-13 21:11:20,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:20,390 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 704 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:20,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 758 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:11:20,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-13 21:11:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4490. [2022-07-13 21:11:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.307499303038751) internal successors, (4690), 3644 states have internal predecessors, (4690), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-13 21:11:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5817 transitions. [2022-07-13 21:11:20,632 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5817 transitions. Word has length 79 [2022-07-13 21:11:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:20,632 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5817 transitions. [2022-07-13 21:11:20,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5817 transitions. [2022-07-13 21:11:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:20,635 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] [2022-07-13 21:11:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:11:20,636 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1614109371, now seen corresponding path program 1 times [2022-07-13 21:11:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428387092] [2022-07-13 21:11:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:20,698 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 21:11:20,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428387092] [2022-07-13 21:11:20,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428387092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:20,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:20,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:20,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430417264] [2022-07-13 21:11:20,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:20,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:20,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:20,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:20,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:20,700 INFO L87 Difference]: Start difference. First operand 4490 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:21,585 INFO L93 Difference]: Finished difference Result 6494 states and 8795 transitions. [2022-07-13 21:11:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:11:21,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:21,599 INFO L225 Difference]: With dead ends: 6494 [2022-07-13 21:11:21,599 INFO L226 Difference]: Without dead ends: 5301 [2022-07-13 21:11:21,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:11:21,603 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 457 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:21,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1164 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:11:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2022-07-13 21:11:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4517. [2022-07-13 21:11:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 3614 states have (on average 1.305201992252352) internal successors, (4717), 3671 states have internal predecessors, (4717), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-13 21:11:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5844 transitions. [2022-07-13 21:11:21,835 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5844 transitions. Word has length 79 [2022-07-13 21:11:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:21,835 INFO L495 AbstractCegarLoop]: Abstraction has 4517 states and 5844 transitions. [2022-07-13 21:11:21,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5844 transitions. [2022-07-13 21:11:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 21:11:21,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:21,838 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] [2022-07-13 21:11:21,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:11:21,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1629628089, now seen corresponding path program 1 times [2022-07-13 21:11:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:21,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959406226] [2022-07-13 21:11:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:21,897 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 21:11:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959406226] [2022-07-13 21:11:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959406226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:21,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300878520] [2022-07-13 21:11:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:21,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:21,899 INFO L87 Difference]: Start difference. First operand 4517 states and 5844 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:23,425 INFO L93 Difference]: Finished difference Result 8926 states and 12553 transitions. [2022-07-13 21:11:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:11:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2022-07-13 21:11:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:23,442 INFO L225 Difference]: With dead ends: 8926 [2022-07-13 21:11:23,443 INFO L226 Difference]: Without dead ends: 7706 [2022-07-13 21:11:23,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-13 21:11:23,448 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1530 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:23,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1260 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:11:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-07-13 21:11:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 6883. [2022-07-13 21:11:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 5637 states have (on average 1.35249246052865) internal successors, (7624), 5725 states have internal predecessors, (7624), 677 states have call successors, (677), 463 states have call predecessors, (677), 567 states have return successors, (1012), 708 states have call predecessors, (1012), 676 states have call successors, (1012) [2022-07-13 21:11:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 9313 transitions. [2022-07-13 21:11:23,809 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 9313 transitions. Word has length 79 [2022-07-13 21:11:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 6883 states and 9313 transitions. [2022-07-13 21:11:23,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:11:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 9313 transitions. [2022-07-13 21:11:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 21:11:23,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:23,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:23,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:11:23,814 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash -40676858, now seen corresponding path program 1 times [2022-07-13 21:11:23,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:23,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582198984] [2022-07-13 21:11:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:23,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:11:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:11:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582198984] [2022-07-13 21:11:23,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582198984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:23,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:23,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:11:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433893874] [2022-07-13 21:11:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:11:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:11:23,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:23,870 INFO L87 Difference]: Start difference. First operand 6883 states and 9313 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:11:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:25,020 INFO L93 Difference]: Finished difference Result 13587 states and 17596 transitions. [2022-07-13 21:11:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 21:11:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-13 21:11:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:25,044 INFO L225 Difference]: With dead ends: 13587 [2022-07-13 21:11:25,044 INFO L226 Difference]: Without dead ends: 9006 [2022-07-13 21:11:25,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 21:11:25,054 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 697 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:25,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1494 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:11:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2022-07-13 21:11:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 8730. [2022-07-13 21:11:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8730 states, 7037 states have (on average 1.320306948983942) internal successors, (9291), 7170 states have internal predecessors, (9291), 875 states have call successors, (875), 631 states have call predecessors, (875), 816 states have return successors, (1392), 942 states have call predecessors, (1392), 874 states have call successors, (1392) [2022-07-13 21:11:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8730 states to 8730 states and 11558 transitions. [2022-07-13 21:11:25,552 INFO L78 Accepts]: Start accepts. Automaton has 8730 states and 11558 transitions. Word has length 84 [2022-07-13 21:11:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 8730 states and 11558 transitions. [2022-07-13 21:11:25,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:11:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8730 states and 11558 transitions. [2022-07-13 21:11:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:11:25,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:25,558 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:11:25,558 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1005107396, now seen corresponding path program 1 times [2022-07-13 21:11:25,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:25,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074572096] [2022-07-13 21:11:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 21:11:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 21:11:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:25,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074572096] [2022-07-13 21:11:25,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074572096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:25,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:25,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:11:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862033717] [2022-07-13 21:11:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:11:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:11:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:11:25,620 INFO L87 Difference]: Start difference. First operand 8730 states and 11558 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:11:26,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:26,727 INFO L93 Difference]: Finished difference Result 12671 states and 16344 transitions. [2022-07-13 21:11:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 21:11:26,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-13 21:11:26,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:26,748 INFO L225 Difference]: With dead ends: 12671 [2022-07-13 21:11:26,749 INFO L226 Difference]: Without dead ends: 8208 [2022-07-13 21:11:26,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-13 21:11:26,759 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1521 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:26,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 1343 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:11:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8208 states. [2022-07-13 21:11:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8208 to 7896. [2022-07-13 21:11:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 6403 states have (on average 1.3218803685772293) internal successors, (8464), 6515 states have internal predecessors, (8464), 784 states have call successors, (784), 554 states have call predecessors, (784), 707 states have return successors, (1172), 840 states have call predecessors, (1172), 783 states have call successors, (1172) [2022-07-13 21:11:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10420 transitions. [2022-07-13 21:11:27,214 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10420 transitions. Word has length 93 [2022-07-13 21:11:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:27,214 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 10420 transitions. [2022-07-13 21:11:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:11:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10420 transitions. [2022-07-13 21:11:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 21:11:27,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:27,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:27,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:11:27,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:27,224 INFO L85 PathProgramCache]: Analyzing trace with hash -834500451, now seen corresponding path program 1 times [2022-07-13 21:11:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:27,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160843054] [2022-07-13 21:11:27,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:11:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:11:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 21:11:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160843054] [2022-07-13 21:11:27,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160843054] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752893823] [2022-07-13 21:11:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:27,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:27,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:27,328 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 21:11:27,357 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 21:11:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:27,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:27,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 21:11:27,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:27,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752893823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:27,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:27,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:11:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251944148] [2022-07-13 21:11:27,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:27,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:27,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:27,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:27,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:27,486 INFO L87 Difference]: Start difference. First operand 7896 states and 10420 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:27,976 INFO L93 Difference]: Finished difference Result 14927 states and 20872 transitions. [2022-07-13 21:11:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:27,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-13 21:11:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:28,004 INFO L225 Difference]: With dead ends: 14927 [2022-07-13 21:11:28,005 INFO L226 Difference]: Without dead ends: 11341 [2022-07-13 21:11:28,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:28,017 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 298 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:28,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:28,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2022-07-13 21:11:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11283. [2022-07-13 21:11:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11283 states, 9308 states have (on average 1.3579716373012463) internal successors, (12640), 9459 states have internal predecessors, (12640), 1074 states have call successors, (1074), 722 states have call predecessors, (1074), 899 states have return successors, (1611), 1115 states have call predecessors, (1611), 1073 states have call successors, (1611) [2022-07-13 21:11:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 15325 transitions. [2022-07-13 21:11:28,680 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 15325 transitions. Word has length 128 [2022-07-13 21:11:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:28,680 INFO L495 AbstractCegarLoop]: Abstraction has 11283 states and 15325 transitions. [2022-07-13 21:11:28,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:11:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 15325 transitions. [2022-07-13 21:11:28,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 21:11:28,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:28,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:28,737 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 21:11:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-13 21:11:28,915 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2033886077, now seen corresponding path program 1 times [2022-07-13 21:11:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:28,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871319108] [2022-07-13 21:11:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:28,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:11:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:11:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 21:11:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871319108] [2022-07-13 21:11:28,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871319108] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025450189] [2022-07-13 21:11:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:28,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:28,974 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 21:11:28,975 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 21:11:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:29,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 21:11:29,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:29,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025450189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:29,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:29,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:11:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638191002] [2022-07-13 21:11:29,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:29,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:29,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:29,075 INFO L87 Difference]: Start difference. First operand 11283 states and 15325 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 21:11:30,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:30,087 INFO L93 Difference]: Finished difference Result 24946 states and 35355 transitions. [2022-07-13 21:11:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:30,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-13 21:11:30,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:30,121 INFO L225 Difference]: With dead ends: 24946 [2022-07-13 21:11:30,121 INFO L226 Difference]: Without dead ends: 12552 [2022-07-13 21:11:30,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:30,151 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 191 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:30,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 891 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2022-07-13 21:11:30,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12552. [2022-07-13 21:11:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 10402 states have (on average 1.3653143626225726) internal successors, (14202), 10561 states have internal predecessors, (14202), 1181 states have call successors, (1181), 782 states have call predecessors, (1181), 967 states have return successors, (1785), 1222 states have call predecessors, (1785), 1180 states have call successors, (1785) [2022-07-13 21:11:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 17168 transitions. [2022-07-13 21:11:30,919 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 17168 transitions. Word has length 128 [2022-07-13 21:11:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:30,919 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 17168 transitions. [2022-07-13 21:11:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 21:11:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 17168 transitions. [2022-07-13 21:11:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:11:30,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:30,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:30,963 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 21:11:31,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:31,150 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash 45573472, now seen corresponding path program 1 times [2022-07-13 21:11:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089188940] [2022-07-13 21:11:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:31,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:11:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 21:11:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:11:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:11:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:11:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:11:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 21:11:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:11:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:31,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089188940] [2022-07-13 21:11:31,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089188940] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:31,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324777878] [2022-07-13 21:11:31,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:31,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:31,292 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 21:11:31,311 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 21:11:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:31,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 21:11:31,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 21:11:31,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:31,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324777878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:31,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:31,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-13 21:11:31,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272843054] [2022-07-13 21:11:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:31,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:31,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:11:31,409 INFO L87 Difference]: Start difference. First operand 12552 states and 17168 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:11:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:31,985 INFO L93 Difference]: Finished difference Result 14706 states and 19787 transitions. [2022-07-13 21:11:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-13 21:11:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:32,050 INFO L225 Difference]: With dead ends: 14706 [2022-07-13 21:11:32,051 INFO L226 Difference]: Without dead ends: 10435 [2022-07-13 21:11:32,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:11:32,057 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 34 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:32,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1715 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:11:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-13 21:11:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10310. [2022-07-13 21:11:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10310 states, 8734 states have (on average 1.3929471032745593) internal successors, (12166), 8841 states have internal predecessors, (12166), 907 states have call successors, (907), 550 states have call predecessors, (907), 667 states have return successors, (1388), 926 states have call predecessors, (1388), 906 states have call successors, (1388) [2022-07-13 21:11:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10310 states to 10310 states and 14461 transitions. [2022-07-13 21:11:32,719 INFO L78 Accepts]: Start accepts. Automaton has 10310 states and 14461 transitions. Word has length 145 [2022-07-13 21:11:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:32,719 INFO L495 AbstractCegarLoop]: Abstraction has 10310 states and 14461 transitions. [2022-07-13 21:11:32,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:11:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states and 14461 transitions. [2022-07-13 21:11:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 21:11:32,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:32,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:32,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 21:11:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:32,948 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash 37593864, now seen corresponding path program 1 times [2022-07-13 21:11:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:32,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621470730] [2022-07-13 21:11:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:11:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 21:11:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 21:11:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:11:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:11:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 21:11:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:11:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:11:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:33,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621470730] [2022-07-13 21:11:33,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621470730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:33,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:33,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:11:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667051387] [2022-07-13 21:11:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:11:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:11:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:11:33,008 INFO L87 Difference]: Start difference. First operand 10310 states and 14461 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:11:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:33,813 INFO L93 Difference]: Finished difference Result 10367 states and 14521 transitions. [2022-07-13 21:11:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:33,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-13 21:11:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:33,830 INFO L225 Difference]: With dead ends: 10367 [2022-07-13 21:11:33,830 INFO L226 Difference]: Without dead ends: 9918 [2022-07-13 21:11:33,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:11:33,833 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 516 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 744 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:11:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2022-07-13 21:11:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9864. [2022-07-13 21:11:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9864 states, 8387 states have (on average 1.4016930964588052) internal successors, (11756), 8488 states have internal predecessors, (11756), 861 states have call successors, (861), 510 states have call predecessors, (861), 614 states have return successors, (1319), 873 states have call predecessors, (1319), 860 states have call successors, (1319) [2022-07-13 21:11:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 13936 transitions. [2022-07-13 21:11:34,413 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 13936 transitions. Word has length 147 [2022-07-13 21:11:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:34,413 INFO L495 AbstractCegarLoop]: Abstraction has 9864 states and 13936 transitions. [2022-07-13 21:11:34,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:11:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 13936 transitions. [2022-07-13 21:11:34,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 21:11:34,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:34,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:34,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:11:34,424 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 644674118, now seen corresponding path program 1 times [2022-07-13 21:11:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:34,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707427122] [2022-07-13 21:11:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:34,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:11:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:11:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 21:11:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:11:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 21:11:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 21:11:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:11:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 21:11:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:34,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707427122] [2022-07-13 21:11:34,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707427122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:34,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:11:34,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:11:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980003528] [2022-07-13 21:11:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:11:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:11:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:11:34,477 INFO L87 Difference]: Start difference. First operand 9864 states and 13936 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:11:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:35,254 INFO L93 Difference]: Finished difference Result 11341 states and 15735 transitions. [2022-07-13 21:11:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:11:35,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-13 21:11:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:35,274 INFO L225 Difference]: With dead ends: 11341 [2022-07-13 21:11:35,274 INFO L226 Difference]: Without dead ends: 9985 [2022-07-13 21:11:35,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:11:35,279 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 312 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:35,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1235 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:11:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2022-07-13 21:11:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9793. [2022-07-13 21:11:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9793 states, 8336 states have (on average 1.4019913627639156) internal successors, (11687), 8436 states have internal predecessors, (11687), 854 states have call successors, (854), 507 states have call predecessors, (854), 601 states have return successors, (1301), 857 states have call predecessors, (1301), 853 states have call successors, (1301) [2022-07-13 21:11:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9793 states to 9793 states and 13842 transitions. [2022-07-13 21:11:35,863 INFO L78 Accepts]: Start accepts. Automaton has 9793 states and 13842 transitions. Word has length 159 [2022-07-13 21:11:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 9793 states and 13842 transitions. [2022-07-13 21:11:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:11:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 9793 states and 13842 transitions. [2022-07-13 21:11:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 21:11:35,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:35,874 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:35,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:11:35,875 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1611156349, now seen corresponding path program 1 times [2022-07-13 21:11:35,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:35,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778524137] [2022-07-13 21:11:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:35,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:11:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:11:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:11:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:11:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:11:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:11:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 21:11:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 21:11:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 21:11:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 21:11:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:11:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 21:11:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:35,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778524137] [2022-07-13 21:11:35,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778524137] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:35,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747181980] [2022-07-13 21:11:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:35,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:35,948 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 21:11:35,975 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 21:11:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:36,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 21:11:36,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 21:11:36,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:11:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 21:11:36,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747181980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:11:36,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:11:36,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-13 21:11:36,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087401901] [2022-07-13 21:11:36,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:11:36,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:11:36,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:11:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:11:36,380 INFO L87 Difference]: Start difference. First operand 9793 states and 13842 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:11:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:37,771 INFO L93 Difference]: Finished difference Result 11765 states and 16295 transitions. [2022-07-13 21:11:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 21:11:37,771 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-13 21:11:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:37,789 INFO L225 Difference]: With dead ends: 11765 [2022-07-13 21:11:37,789 INFO L226 Difference]: Without dead ends: 10331 [2022-07-13 21:11:37,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 355 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-13 21:11:37,794 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1008 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:37,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1328 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:11:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10331 states. [2022-07-13 21:11:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10331 to 10181. [2022-07-13 21:11:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10181 states, 8613 states have (on average 1.3918495297805642) internal successors, (11988), 8720 states have internal predecessors, (11988), 908 states have call successors, (908), 557 states have call predecessors, (908), 658 states have return successors, (1414), 911 states have call predecessors, (1414), 907 states have call successors, (1414) [2022-07-13 21:11:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10181 states to 10181 states and 14310 transitions. [2022-07-13 21:11:38,595 INFO L78 Accepts]: Start accepts. Automaton has 10181 states and 14310 transitions. Word has length 162 [2022-07-13 21:11:38,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:38,595 INFO L495 AbstractCegarLoop]: Abstraction has 10181 states and 14310 transitions. [2022-07-13 21:11:38,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:11:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10181 states and 14310 transitions. [2022-07-13 21:11:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 21:11:38,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:38,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:38,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 21:11:38,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-13 21:11:38,823 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:38,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:38,824 INFO L85 PathProgramCache]: Analyzing trace with hash 948222591, now seen corresponding path program 1 times [2022-07-13 21:11:38,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:38,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579975678] [2022-07-13 21:11:38,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:38,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:11:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 21:11:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 21:11:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 21:11:38,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:38,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579975678] [2022-07-13 21:11:38,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579975678] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:38,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289534347] [2022-07-13 21:11:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:38,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:38,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:38,956 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:38,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 21:11:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:39,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:39,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 21:11:39,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:39,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289534347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:39,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:39,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:11:39,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075158654] [2022-07-13 21:11:39,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:39,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:39,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:39,156 INFO L87 Difference]: Start difference. First operand 10181 states and 14310 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 21:11:40,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:40,100 INFO L93 Difference]: Finished difference Result 26322 states and 38179 transitions. [2022-07-13 21:11:40,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:40,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-13 21:11:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:40,144 INFO L225 Difference]: With dead ends: 26322 [2022-07-13 21:11:40,145 INFO L226 Difference]: Without dead ends: 18080 [2022-07-13 21:11:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:40,166 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 251 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 553 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18080 states. [2022-07-13 21:11:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18080 to 17946. [2022-07-13 21:11:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17946 states, 15285 states have (on average 1.4103369316323193) internal successors, (21557), 15478 states have internal predecessors, (21557), 1553 states have call successors, (1553), 949 states have call predecessors, (1553), 1106 states have return successors, (2399), 1526 states have call predecessors, (2399), 1552 states have call successors, (2399) [2022-07-13 21:11:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17946 states to 17946 states and 25509 transitions. [2022-07-13 21:11:41,162 INFO L78 Accepts]: Start accepts. Automaton has 17946 states and 25509 transitions. Word has length 166 [2022-07-13 21:11:41,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:41,163 INFO L495 AbstractCegarLoop]: Abstraction has 17946 states and 25509 transitions. [2022-07-13 21:11:41,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 21:11:41,163 INFO L276 IsEmpty]: Start isEmpty. Operand 17946 states and 25509 transitions. [2022-07-13 21:11:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 21:11:41,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:41,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:41,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-13 21:11:41,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 21:11:41,392 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash -104058437, now seen corresponding path program 1 times [2022-07-13 21:11:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:41,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480526005] [2022-07-13 21:11:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:11:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 21:11:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 21:11:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 21:11:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480526005] [2022-07-13 21:11:41,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480526005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528419345] [2022-07-13 21:11:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:41,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:41,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:41,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:41,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 21:11:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:41,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:41,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 21:11:41,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:41,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528419345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:41,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:41,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:11:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767820561] [2022-07-13 21:11:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:41,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:41,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:41,703 INFO L87 Difference]: Start difference. First operand 17946 states and 25509 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 21:11:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:42,912 INFO L93 Difference]: Finished difference Result 35267 states and 51145 transitions. [2022-07-13 21:11:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-13 21:11:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:42,976 INFO L225 Difference]: With dead ends: 35267 [2022-07-13 21:11:42,976 INFO L226 Difference]: Without dead ends: 25289 [2022-07-13 21:11:43,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:43,002 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 252 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:43,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 558 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2022-07-13 21:11:44,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 25095. [2022-07-13 21:11:44,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4185786233911584) internal successors, (30420), 21705 states have internal predecessors, (30420), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-13 21:11:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35809 transitions. [2022-07-13 21:11:44,378 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35809 transitions. Word has length 166 [2022-07-13 21:11:44,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:44,379 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35809 transitions. [2022-07-13 21:11:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 21:11:44,379 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35809 transitions. [2022-07-13 21:11:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:11:44,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:44,403 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:44,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 21:11:44,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:44,619 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1396720151, now seen corresponding path program 1 times [2022-07-13 21:11:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:44,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864910691] [2022-07-13 21:11:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:44,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 21:11:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 21:11:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:11:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:11:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:11:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 21:11:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:11:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:11:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 21:11:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:11:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 21:11:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 21:11:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864910691] [2022-07-13 21:11:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864910691] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444488843] [2022-07-13 21:11:44,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:44,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:44,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:44,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:44,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 21:11:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:44,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:11:44,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:44,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444488843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:44,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:44,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:11:44,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539941458] [2022-07-13 21:11:44,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:44,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:44,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:44,880 INFO L87 Difference]: Start difference. First operand 25095 states and 35809 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:11:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:46,229 INFO L93 Difference]: Finished difference Result 26857 states and 37938 transitions. [2022-07-13 21:11:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2022-07-13 21:11:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:46,292 INFO L225 Difference]: With dead ends: 26857 [2022-07-13 21:11:46,292 INFO L226 Difference]: Without dead ends: 25102 [2022-07-13 21:11:46,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:46,307 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 33 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:46,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 712 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25102 states. [2022-07-13 21:11:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25102 to 25095. [2022-07-13 21:11:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4182988248461108) internal successors, (30414), 21705 states have internal predecessors, (30414), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-13 21:11:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35803 transitions. [2022-07-13 21:11:47,621 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35803 transitions. Word has length 179 [2022-07-13 21:11:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:47,621 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35803 transitions. [2022-07-13 21:11:47,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:11:47,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35803 transitions. [2022-07-13 21:11:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:11:47,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:47,643 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:47,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 21:11:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-13 21:11:47,860 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:47,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:47,860 INFO L85 PathProgramCache]: Analyzing trace with hash -642490676, now seen corresponding path program 1 times [2022-07-13 21:11:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515104873] [2022-07-13 21:11:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 21:11:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 21:11:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:11:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:11:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 21:11:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 21:11:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:11:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:11:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:11:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:11:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 21:11:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:11:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 21:11:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 21:11:47,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:47,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515104873] [2022-07-13 21:11:47,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515104873] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:47,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779547042] [2022-07-13 21:11:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:47,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:47,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:47,912 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:47,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 21:11:47,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:48,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 21:11:48,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-13 21:11:48,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:48,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779547042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:48,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-13 21:11:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372453213] [2022-07-13 21:11:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:48,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:11:48,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:11:48,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:11:48,032 INFO L87 Difference]: Start difference. First operand 25095 states and 35803 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 21:11:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:49,621 INFO L93 Difference]: Finished difference Result 26922 states and 38000 transitions. [2022-07-13 21:11:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:11:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2022-07-13 21:11:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:49,688 INFO L225 Difference]: With dead ends: 26922 [2022-07-13 21:11:49,688 INFO L226 Difference]: Without dead ends: 24807 [2022-07-13 21:11:49,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-13 21:11:49,703 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 442 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:49,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 695 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:11:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24807 states. [2022-07-13 21:11:51,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24807 to 24765. [2022-07-13 21:11:51,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24765 states, 21191 states have (on average 1.4206030862158463) internal successors, (30104), 21445 states have internal predecessors, (30104), 2105 states have call successors, (2105), 1273 states have call predecessors, (2105), 1467 states have return successors, (3175), 2054 states have call predecessors, (3175), 2104 states have call successors, (3175) [2022-07-13 21:11:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24765 states to 24765 states and 35384 transitions. [2022-07-13 21:11:51,410 INFO L78 Accepts]: Start accepts. Automaton has 24765 states and 35384 transitions. Word has length 179 [2022-07-13 21:11:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:51,410 INFO L495 AbstractCegarLoop]: Abstraction has 24765 states and 35384 transitions. [2022-07-13 21:11:51,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 21:11:51,411 INFO L276 IsEmpty]: Start isEmpty. Operand 24765 states and 35384 transitions. [2022-07-13 21:11:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 21:11:51,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:51,439 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:51,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 21:11:51,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:51,651 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:51,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:51,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1330235084, now seen corresponding path program 1 times [2022-07-13 21:11:51,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:51,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909480660] [2022-07-13 21:11:51,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:51,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:11:51,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:11:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 21:11:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 21:11:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:11:51,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909480660] [2022-07-13 21:11:51,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909480660] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:51,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301929672] [2022-07-13 21:11:51,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:51,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:51,782 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:51,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 21:11:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:51,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:11:51,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:11:52,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:52,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301929672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:52,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:52,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:11:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899343465] [2022-07-13 21:11:52,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:52,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:52,009 INFO L87 Difference]: Start difference. First operand 24765 states and 35384 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 21:11:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:53,753 INFO L93 Difference]: Finished difference Result 46003 states and 66112 transitions. [2022-07-13 21:11:53,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:53,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-13 21:11:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:53,818 INFO L225 Difference]: With dead ends: 46003 [2022-07-13 21:11:53,819 INFO L226 Difference]: Without dead ends: 22848 [2022-07-13 21:11:53,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:53,856 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 275 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:53,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 392 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:53,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2022-07-13 21:11:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22798. [2022-07-13 21:11:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22798 states, 19624 states have (on average 1.375407664084794) internal successors, (26991), 19806 states have internal predecessors, (26991), 1794 states have call successors, (1794), 1216 states have call predecessors, (1794), 1378 states have return successors, (2628), 1783 states have call predecessors, (2628), 1793 states have call successors, (2628) [2022-07-13 21:11:55,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22798 states to 22798 states and 31413 transitions. [2022-07-13 21:11:55,839 INFO L78 Accepts]: Start accepts. Automaton has 22798 states and 31413 transitions. Word has length 184 [2022-07-13 21:11:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:11:55,840 INFO L495 AbstractCegarLoop]: Abstraction has 22798 states and 31413 transitions. [2022-07-13 21:11:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 21:11:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 22798 states and 31413 transitions. [2022-07-13 21:11:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 21:11:55,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:11:55,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:11:55,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 21:11:56,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-13 21:11:56,176 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:11:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:11:56,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2021171972, now seen corresponding path program 1 times [2022-07-13 21:11:56,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:11:56,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079046148] [2022-07-13 21:11:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:56,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:11:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:11:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:11:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:11:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:11:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:11:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:11:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:11:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 21:11:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:11:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 21:11:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:11:56,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:11:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079046148] [2022-07-13 21:11:56,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079046148] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:11:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821364555] [2022-07-13 21:11:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:11:56,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:11:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:11:56,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:11:56,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 21:11:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:11:56,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:11:56,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:11:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 21:11:56,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:11:56,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821364555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:11:56,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:11:56,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:11:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925814954] [2022-07-13 21:11:56,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:11:56,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:11:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:11:56,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:11:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:56,440 INFO L87 Difference]: Start difference. First operand 22798 states and 31413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 21:11:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:58,154 INFO L93 Difference]: Finished difference Result 46333 states and 65025 transitions. [2022-07-13 21:11:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:11:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-13 21:11:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:58,218 INFO L225 Difference]: With dead ends: 46333 [2022-07-13 21:11:58,219 INFO L226 Difference]: Without dead ends: 25145 [2022-07-13 21:11:58,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:11:58,252 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:58,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:11:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25145 states. [2022-07-13 21:12:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25145 to 25135. [2022-07-13 21:12:00,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25135 states, 21769 states have (on average 1.3401166796821167) internal successors, (29173), 21951 states have internal predecessors, (29173), 1852 states have call successors, (1852), 1350 states have call predecessors, (1852), 1512 states have return successors, (2701), 1841 states have call predecessors, (2701), 1851 states have call successors, (2701) [2022-07-13 21:12:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25135 states to 25135 states and 33726 transitions. [2022-07-13 21:12:00,142 INFO L78 Accepts]: Start accepts. Automaton has 25135 states and 33726 transitions. Word has length 184 [2022-07-13 21:12:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:00,155 INFO L495 AbstractCegarLoop]: Abstraction has 25135 states and 33726 transitions. [2022-07-13 21:12:00,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 21:12:00,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25135 states and 33726 transitions. [2022-07-13 21:12:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 21:12:00,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:00,183 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:12:00,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 21:12:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-13 21:12:00,401 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:00,401 INFO L85 PathProgramCache]: Analyzing trace with hash -898713314, now seen corresponding path program 1 times [2022-07-13 21:12:00,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:00,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526587988] [2022-07-13 21:12:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:12:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:12:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:12:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:12:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:12:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:12:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 21:12:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 21:12:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,469 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:12:00,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526587988] [2022-07-13 21:12:00,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526587988] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:12:00,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077873705] [2022-07-13 21:12:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:12:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:00,471 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:12:00,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 21:12:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:00,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:12:00,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:12:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 21:12:00,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:12:00,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077873705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:00,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:12:00,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:12:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680750964] [2022-07-13 21:12:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:12:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:12:00,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:00,630 INFO L87 Difference]: Start difference. First operand 25135 states and 33726 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 21:12:03,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:03,030 INFO L93 Difference]: Finished difference Result 50684 states and 67959 transitions. [2022-07-13 21:12:03,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:12:03,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 184 [2022-07-13 21:12:03,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:03,092 INFO L225 Difference]: With dead ends: 50684 [2022-07-13 21:12:03,092 INFO L226 Difference]: Without dead ends: 27159 [2022-07-13 21:12:03,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:03,121 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 317 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:03,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:12:03,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27159 states. [2022-07-13 21:12:05,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27159 to 26804. [2022-07-13 21:12:05,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26804 states, 23318 states have (on average 1.3106612917059781) internal successors, (30562), 23490 states have internal predecessors, (30562), 1862 states have call successors, (1862), 1440 states have call predecessors, (1862), 1622 states have return successors, (2691), 1881 states have call predecessors, (2691), 1861 states have call successors, (2691) [2022-07-13 21:12:05,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26804 states to 26804 states and 35115 transitions. [2022-07-13 21:12:05,100 INFO L78 Accepts]: Start accepts. Automaton has 26804 states and 35115 transitions. Word has length 184 [2022-07-13 21:12:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:05,100 INFO L495 AbstractCegarLoop]: Abstraction has 26804 states and 35115 transitions. [2022-07-13 21:12:05,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 21:12:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 26804 states and 35115 transitions. [2022-07-13 21:12:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 21:12:05,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:05,128 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:12:05,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 21:12:05,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-13 21:12:05,346 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1926128958, now seen corresponding path program 1 times [2022-07-13 21:12:05,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:05,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59388132] [2022-07-13 21:12:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:05,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:12:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:12:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:12:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:12:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:12:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 21:12:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 21:12:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-13 21:12:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-13 21:12:05,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:05,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59388132] [2022-07-13 21:12:05,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59388132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:12:05,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793783385] [2022-07-13 21:12:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:05,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:12:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:12:05,440 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:12:05,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 21:12:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:05,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:12:05,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:12:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 21:12:05,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:12:05,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793783385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:05,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:12:05,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:12:05,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999336076] [2022-07-13 21:12:05,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:05,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:12:05,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:12:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:05,583 INFO L87 Difference]: Start difference. First operand 26804 states and 35115 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 21:12:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:12:09,035 INFO L93 Difference]: Finished difference Result 76438 states and 101578 transitions. [2022-07-13 21:12:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:12:09,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-07-13 21:12:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:12:09,183 INFO L225 Difference]: With dead ends: 76438 [2022-07-13 21:12:09,183 INFO L226 Difference]: Without dead ends: 51244 [2022-07-13 21:12:09,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:12:09,230 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 297 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:12:09,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 601 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:12:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51244 states. [2022-07-13 21:12:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51244 to 50932. [2022-07-13 21:12:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50932 states, 44469 states have (on average 1.306977894713171) internal successors, (58120), 44800 states have internal predecessors, (58120), 3437 states have call successors, (3437), 2684 states have call predecessors, (3437), 3024 states have return successors, (6180), 3463 states have call predecessors, (6180), 3436 states have call successors, (6180) [2022-07-13 21:12:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50932 states to 50932 states and 67737 transitions. [2022-07-13 21:12:13,294 INFO L78 Accepts]: Start accepts. Automaton has 50932 states and 67737 transitions. Word has length 185 [2022-07-13 21:12:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:12:13,294 INFO L495 AbstractCegarLoop]: Abstraction has 50932 states and 67737 transitions. [2022-07-13 21:12:13,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 21:12:13,294 INFO L276 IsEmpty]: Start isEmpty. Operand 50932 states and 67737 transitions. [2022-07-13 21:12:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 21:12:13,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:12:13,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:12:13,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 21:12:13,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-13 21:12:13,560 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:12:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:12:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 356903296, now seen corresponding path program 1 times [2022-07-13 21:12:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:12:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646197953] [2022-07-13 21:12:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:12:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:12:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:12:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 21:12:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:12:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:12:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:12:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:12:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 21:12:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 21:12:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:12:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-13 21:12:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:12:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 21:12:13,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:12:13,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646197953] [2022-07-13 21:12:13,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646197953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:12:13,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:12:13,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:12:13,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458564893] [2022-07-13 21:12:13,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:12:13,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:12:13,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:12:13,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:12:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:12:13,611 INFO L87 Difference]: Start difference. First operand 50932 states and 67737 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)