./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.11.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 b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:32:56,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:32:56,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:32:56,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:32:56,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:32:56,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:32:56,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:32:56,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:32:56,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:32:56,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:32:56,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:32:56,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:32:56,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:32:56,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:32:56,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:32:56,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:32:56,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:32:56,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:32:56,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:32:56,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:32:56,301 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:32:56,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:32:56,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:32:56,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:32:56,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:32:56,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:32:56,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:32:56,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:32:56,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:32:56,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:32:56,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:32:56,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:32:56,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:32:56,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:32:56,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:32:56,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:32:56,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:32:56,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:32:56,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:32:56,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:32:56,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:32:56,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:32:56,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:32:56,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:32:56,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:32:56,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:32:56,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:32:56,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:32:56,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:32:56,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:32:56,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:32:56,344 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:32:56,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:32:56,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:32:56,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:32:56,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:56,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:32:56,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:32:56,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:32:56,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:32:56,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:32:56,347 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:32:56,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:32:56,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:32:56,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3322c0c768700658989b53a570d5dd58dc6c9ba5f33ff303fa538b570ca8619 [2022-07-12 09:32:56,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:32:56,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:32:56,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:32:56,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:32:56,526 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:32:56,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-07-12 09:32:56,570 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f293425fe/ca76bfbe2ab246d1a94faaa75282a0df/FLAG595e6bc36 [2022-07-12 09:32:56,893 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:32:56,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-07-12 09:32:56,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f293425fe/ca76bfbe2ab246d1a94faaa75282a0df/FLAG595e6bc36 [2022-07-12 09:32:57,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f293425fe/ca76bfbe2ab246d1a94faaa75282a0df [2022-07-12 09:32:57,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:32:57,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:32:57,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:57,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:32:57,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:32:57,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37740047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57, skipping insertion in model container [2022-07-12 09:32:57,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:32:57,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:32:57,461 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.11.cil-2.c[914,927] [2022-07-12 09:32:57,515 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.11.cil-2.c[7115,7128] [2022-07-12 09:32:57,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:57,607 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:32:57,615 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.11.cil-2.c[914,927] [2022-07-12 09:32:57,643 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.11.cil-2.c[7115,7128] [2022-07-12 09:32:57,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:57,691 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:32:57,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57 WrapperNode [2022-07-12 09:32:57,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:57,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:57,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:32:57,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:32:57,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,747 INFO L137 Inliner]: procedures = 75, calls = 90, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 982 [2022-07-12 09:32:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:57,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:32:57,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:32:57,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:32:57,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:32:57,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:32:57,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:32:57,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:32:57,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (1/1) ... [2022-07-12 09:32:57,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:57,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:57,851 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) [2022-07-12 09:32:57,884 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 [2022-07-12 09:32:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:32:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:32:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:32:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:32:57,897 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:32:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:32:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:32:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:32:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:32:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:32:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:32:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:32:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:32:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:32:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:32:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:32:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:32:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:32:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:32:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:32:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:32:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:32:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:32:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:32:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:32:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:32:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:32:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:32:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:32:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:32:57,901 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:32:57,901 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:32:58,042 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:32:58,043 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:32:58,597 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:32:58,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:32:58,606 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-12 09:32:58,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:58 BoogieIcfgContainer [2022-07-12 09:32:58,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:32:58,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:32:58,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:32:58,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:32:58,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:32:57" (1/3) ... [2022-07-12 09:32:58,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b48f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:58, skipping insertion in model container [2022-07-12 09:32:58,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:57" (2/3) ... [2022-07-12 09:32:58,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b48f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:58, skipping insertion in model container [2022-07-12 09:32:58,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:58" (3/3) ... [2022-07-12 09:32:58,613 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-07-12 09:32:58,622 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:32:58,622 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:32:58,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:32:58,666 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@7d4b8aad, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3126cf2b [2022-07-12 09:32:58,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:32:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 402 states have (on average 1.63681592039801) internal successors, (658), 408 states have internal predecessors, (658), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-12 09:32:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:58,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:58,679 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] [2022-07-12 09:32:58,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash -978370307, now seen corresponding path program 1 times [2022-07-12 09:32:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:58,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826902860] [2022-07-12 09:32:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:58,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:58,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826902860] [2022-07-12 09:32:58,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826902860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:58,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:58,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938962290] [2022-07-12 09:32:58,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:59,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:59,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:59,007 INFO L87 Difference]: Start difference. First operand has 458 states, 402 states have (on average 1.63681592039801) internal successors, (658), 408 states have internal predecessors, (658), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) 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) [2022-07-12 09:32:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:59,934 INFO L93 Difference]: Finished difference Result 1024 states and 1632 transitions. [2022-07-12 09:32:59,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:59,936 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 [2022-07-12 09:32:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:59,947 INFO L225 Difference]: With dead ends: 1024 [2022-07-12 09:32:59,947 INFO L226 Difference]: Without dead ends: 583 [2022-07-12 09:32:59,951 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 [2022-07-12 09:32:59,953 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 810 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:59,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2629 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:59,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-07-12 09:33:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 544. [2022-07-12 09:33:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 470 states have (on average 1.5212765957446808) internal successors, (715), 476 states have internal predecessors, (715), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-07-12 09:33:00,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 818 transitions. [2022-07-12 09:33:00,018 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 818 transitions. Word has length 65 [2022-07-12 09:33:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:00,018 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 818 transitions. [2022-07-12 09:33:00,019 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) [2022-07-12 09:33:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 818 transitions. [2022-07-12 09:33:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:00,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:00,022 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] [2022-07-12 09:33:00,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:33:00,022 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:00,023 INFO L85 PathProgramCache]: Analyzing trace with hash 700518333, now seen corresponding path program 1 times [2022-07-12 09:33:00,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:00,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272951102] [2022-07-12 09:33:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:00,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:00,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:00,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272951102] [2022-07-12 09:33:00,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272951102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:00,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:00,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074533450] [2022-07-12 09:33:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:00,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:00,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:00,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:00,130 INFO L87 Difference]: Start difference. First operand 544 states and 818 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) [2022-07-12 09:33:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:00,976 INFO L93 Difference]: Finished difference Result 891 states and 1295 transitions. [2022-07-12 09:33:00,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:33:00,977 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 [2022-07-12 09:33:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:00,980 INFO L225 Difference]: With dead ends: 891 [2022-07-12 09:33:00,981 INFO L226 Difference]: Without dead ends: 714 [2022-07-12 09:33:00,981 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 [2022-07-12 09:33:00,982 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1354 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 2323 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-07-12 09:33:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 640. [2022-07-12 09:33:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 546 states have (on average 1.5) internal successors, (819), 554 states have internal predecessors, (819), 61 states have call successors, (61), 28 states have call predecessors, (61), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-12 09:33:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 952 transitions. [2022-07-12 09:33:01,018 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 952 transitions. Word has length 65 [2022-07-12 09:33:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:01,018 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 952 transitions. [2022-07-12 09:33:01,018 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) [2022-07-12 09:33:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 952 transitions. [2022-07-12 09:33:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:01,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:01,021 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] [2022-07-12 09:33:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:33:01,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:01,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:01,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1328067777, now seen corresponding path program 1 times [2022-07-12 09:33:01,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:01,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611775516] [2022-07-12 09:33:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:01,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:01,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:01,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:01,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611775516] [2022-07-12 09:33:01,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611775516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:01,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:01,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710244092] [2022-07-12 09:33:01,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:01,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:01,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:01,115 INFO L87 Difference]: Start difference. First operand 640 states and 952 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) [2022-07-12 09:33:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:01,966 INFO L93 Difference]: Finished difference Result 941 states and 1366 transitions. [2022-07-12 09:33:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:33:01,966 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 [2022-07-12 09:33:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:01,969 INFO L225 Difference]: With dead ends: 941 [2022-07-12 09:33:01,969 INFO L226 Difference]: Without dead ends: 674 [2022-07-12 09:33:01,970 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 [2022-07-12 09:33:01,971 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 909 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:01,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2666 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:01,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-12 09:33:01,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 645. [2022-07-12 09:33:01,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 550 states have (on average 1.4927272727272727) internal successors, (821), 558 states have internal predecessors, (821), 61 states have call successors, (61), 28 states have call predecessors, (61), 32 states have return successors, (73), 62 states have call predecessors, (73), 59 states have call successors, (73) [2022-07-12 09:33:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 955 transitions. [2022-07-12 09:33:01,993 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 955 transitions. Word has length 65 [2022-07-12 09:33:01,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:01,993 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 955 transitions. [2022-07-12 09:33:01,994 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) [2022-07-12 09:33:01,994 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 955 transitions. [2022-07-12 09:33:01,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:01,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:01,996 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] [2022-07-12 09:33:01,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:33:01,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:01,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:01,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1937540221, now seen corresponding path program 1 times [2022-07-12 09:33:01,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:01,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672173577] [2022-07-12 09:33:01,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:01,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672173577] [2022-07-12 09:33:02,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672173577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:02,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:02,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:33:02,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512220830] [2022-07-12 09:33:02,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:02,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:33:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:33:02,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:02,118 INFO L87 Difference]: Start difference. First operand 645 states and 955 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:33:03,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:03,443 INFO L93 Difference]: Finished difference Result 1967 states and 2751 transitions. [2022-07-12 09:33:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:33:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:33:03,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:03,449 INFO L225 Difference]: With dead ends: 1967 [2022-07-12 09:33:03,449 INFO L226 Difference]: Without dead ends: 1677 [2022-07-12 09:33:03,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:33:03,451 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 3866 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:03,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3884 Valid, 2454 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-07-12 09:33:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1546. [2022-07-12 09:33:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1265 states have (on average 1.391304347826087) internal successors, (1760), 1288 states have internal predecessors, (1760), 149 states have call successors, (149), 111 states have call predecessors, (149), 130 states have return successors, (187), 149 states have call predecessors, (187), 147 states have call successors, (187) [2022-07-12 09:33:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 2096 transitions. [2022-07-12 09:33:03,498 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 2096 transitions. Word has length 65 [2022-07-12 09:33:03,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:03,498 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 2096 transitions. [2022-07-12 09:33:03,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:33:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 2096 transitions. [2022-07-12 09:33:03,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:03,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:03,500 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] [2022-07-12 09:33:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:33:03,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:03,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1305977986, now seen corresponding path program 1 times [2022-07-12 09:33:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:03,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032623771] [2022-07-12 09:33:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:03,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032623771] [2022-07-12 09:33:03,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032623771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:03,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:03,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:03,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660452886] [2022-07-12 09:33:03,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:03,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:03,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:03,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:03,576 INFO L87 Difference]: Start difference. First operand 1546 states and 2096 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) [2022-07-12 09:33:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:04,401 INFO L93 Difference]: Finished difference Result 2837 states and 3769 transitions. [2022-07-12 09:33:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:33:04,401 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 [2022-07-12 09:33:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:04,407 INFO L225 Difference]: With dead ends: 2837 [2022-07-12 09:33:04,407 INFO L226 Difference]: Without dead ends: 1652 [2022-07-12 09:33:04,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:04,412 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 910 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:04,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 2662 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:04,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2022-07-12 09:33:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1576. [2022-07-12 09:33:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1289 states have (on average 1.377812257564003) internal successors, (1776), 1312 states have internal predecessors, (1776), 149 states have call successors, (149), 111 states have call predecessors, (149), 136 states have return successors, (193), 155 states have call predecessors, (193), 147 states have call successors, (193) [2022-07-12 09:33:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2118 transitions. [2022-07-12 09:33:04,457 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2118 transitions. Word has length 65 [2022-07-12 09:33:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:04,457 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2118 transitions. [2022-07-12 09:33:04,457 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) [2022-07-12 09:33:04,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2118 transitions. [2022-07-12 09:33:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:04,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:04,459 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] [2022-07-12 09:33:04,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:33:04,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 80225408, now seen corresponding path program 1 times [2022-07-12 09:33:04,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:04,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843901488] [2022-07-12 09:33:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:04,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:04,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843901488] [2022-07-12 09:33:04,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843901488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:04,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:04,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:04,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809146077] [2022-07-12 09:33:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:04,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:04,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:04,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:04,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:04,540 INFO L87 Difference]: Start difference. First operand 1576 states and 2118 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) [2022-07-12 09:33:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:04,914 INFO L93 Difference]: Finished difference Result 4012 states and 5222 transitions. [2022-07-12 09:33:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:33:04,915 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 [2022-07-12 09:33:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:04,924 INFO L225 Difference]: With dead ends: 4012 [2022-07-12 09:33:04,924 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 09:33:04,927 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 [2022-07-12 09:33:04,928 INFO L413 NwaCegarLoop]: 648 mSDtfsCounter, 1994 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:04,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1319 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 09:33:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2690. [2022-07-12 09:33:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2144 states have (on average 1.3129664179104477) internal successors, (2815), 2189 states have internal predecessors, (2815), 274 states have call successors, (274), 215 states have call predecessors, (274), 270 states have return successors, (401), 290 states have call predecessors, (401), 272 states have call successors, (401) [2022-07-12 09:33:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3490 transitions. [2022-07-12 09:33:05,034 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3490 transitions. Word has length 65 [2022-07-12 09:33:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:05,034 INFO L495 AbstractCegarLoop]: Abstraction has 2690 states and 3490 transitions. [2022-07-12 09:33:05,034 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) [2022-07-12 09:33:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3490 transitions. [2022-07-12 09:33:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:33:05,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:05,036 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] [2022-07-12 09:33:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:33:05,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1125374181, now seen corresponding path program 1 times [2022-07-12 09:33:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:05,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756489676] [2022-07-12 09:33:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756489676] [2022-07-12 09:33:05,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756489676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:05,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:05,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:05,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726525950] [2022-07-12 09:33:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:05,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:05,086 INFO L87 Difference]: Start difference. First operand 2690 states and 3490 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) [2022-07-12 09:33:05,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:05,598 INFO L93 Difference]: Finished difference Result 6082 states and 7754 transitions. [2022-07-12 09:33:05,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:05,599 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 [2022-07-12 09:33:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:05,614 INFO L225 Difference]: With dead ends: 6082 [2022-07-12 09:33:05,614 INFO L226 Difference]: Without dead ends: 3759 [2022-07-12 09:33:05,619 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 [2022-07-12 09:33:05,621 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1124 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:05,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1609 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:33:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-07-12 09:33:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3503. [2022-07-12 09:33:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 2773 states have (on average 1.294626758023801) internal successors, (3590), 2825 states have internal predecessors, (3590), 364 states have call successors, (364), 293 states have call predecessors, (364), 364 states have return successors, (515), 389 states have call predecessors, (515), 362 states have call successors, (515) [2022-07-12 09:33:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 4469 transitions. [2022-07-12 09:33:05,772 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 4469 transitions. Word has length 66 [2022-07-12 09:33:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:05,772 INFO L495 AbstractCegarLoop]: Abstraction has 3503 states and 4469 transitions. [2022-07-12 09:33:05,773 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) [2022-07-12 09:33:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 4469 transitions. [2022-07-12 09:33:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:33:05,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:05,777 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] [2022-07-12 09:33:05,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:33:05,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:05,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash 242787514, now seen corresponding path program 1 times [2022-07-12 09:33:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:05,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725235718] [2022-07-12 09:33:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:05,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:05,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725235718] [2022-07-12 09:33:05,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725235718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:05,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:05,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:05,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337091656] [2022-07-12 09:33:05,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:05,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:05,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:05,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:05,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:05,838 INFO L87 Difference]: Start difference. First operand 3503 states and 4469 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) [2022-07-12 09:33:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:06,291 INFO L93 Difference]: Finished difference Result 7452 states and 9371 transitions. [2022-07-12 09:33:06,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:06,292 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 [2022-07-12 09:33:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:06,307 INFO L225 Difference]: With dead ends: 7452 [2022-07-12 09:33:06,307 INFO L226 Difference]: Without dead ends: 4314 [2022-07-12 09:33:06,312 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 [2022-07-12 09:33:06,315 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1293 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:06,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1688 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2022-07-12 09:33:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 4066. [2022-07-12 09:33:06,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 3220 states have (on average 1.2847826086956522) internal successors, (4137), 3278 states have internal predecessors, (4137), 420 states have call successors, (420), 343 states have call predecessors, (420), 424 states have return successors, (592), 449 states have call predecessors, (592), 418 states have call successors, (592) [2022-07-12 09:33:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 5149 transitions. [2022-07-12 09:33:06,444 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 5149 transitions. Word has length 72 [2022-07-12 09:33:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:06,444 INFO L495 AbstractCegarLoop]: Abstraction has 4066 states and 5149 transitions. [2022-07-12 09:33:06,444 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) [2022-07-12 09:33:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 5149 transitions. [2022-07-12 09:33:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:33:06,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:06,446 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] [2022-07-12 09:33:06,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:33:06,447 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1580378082, now seen corresponding path program 1 times [2022-07-12 09:33:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:06,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401282803] [2022-07-12 09:33:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:06,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401282803] [2022-07-12 09:33:06,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401282803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:06,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:06,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:06,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663148317] [2022-07-12 09:33:06,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:06,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:06,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:06,540 INFO L87 Difference]: Start difference. First operand 4066 states and 5149 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) [2022-07-12 09:33:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:06,944 INFO L93 Difference]: Finished difference Result 5115 states and 6409 transitions. [2022-07-12 09:33:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:33:06,945 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 [2022-07-12 09:33:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:06,960 INFO L225 Difference]: With dead ends: 5115 [2022-07-12 09:33:06,961 INFO L226 Difference]: Without dead ends: 5112 [2022-07-12 09:33:06,962 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 [2022-07-12 09:33:06,964 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1948 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 1664 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5112 states. [2022-07-12 09:33:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5112 to 4803. [2022-07-12 09:33:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4803 states, 3782 states have (on average 1.273664727657324) internal successors, (4817), 3847 states have internal predecessors, (4817), 501 states have call successors, (501), 413 states have call predecessors, (501), 518 states have return successors, (716), 547 states have call predecessors, (716), 500 states have call successors, (716) [2022-07-12 09:33:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4803 states to 4803 states and 6034 transitions. [2022-07-12 09:33:07,160 INFO L78 Accepts]: Start accepts. Automaton has 4803 states and 6034 transitions. Word has length 73 [2022-07-12 09:33:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:07,161 INFO L495 AbstractCegarLoop]: Abstraction has 4803 states and 6034 transitions. [2022-07-12 09:33:07,162 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) [2022-07-12 09:33:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4803 states and 6034 transitions. [2022-07-12 09:33:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:33:07,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:07,163 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] [2022-07-12 09:33:07,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:33:07,164 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1748440700, now seen corresponding path program 1 times [2022-07-12 09:33:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:07,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985508590] [2022-07-12 09:33:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:07,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985508590] [2022-07-12 09:33:07,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985508590] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948869243] [2022-07-12 09:33:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:07,250 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) [2022-07-12 09:33:07,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:33:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:07,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:33:07,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:07,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:33:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:07,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948869243] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:33:07,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:33:07,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:33:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972533604] [2022-07-12 09:33:07,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:33:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:33:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:33:07,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:07,754 INFO L87 Difference]: Start difference. First operand 4803 states and 6034 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) [2022-07-12 09:33:09,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:09,050 INFO L93 Difference]: Finished difference Result 9217 states and 11407 transitions. [2022-07-12 09:33:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:33:09,051 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 [2022-07-12 09:33:09,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:09,085 INFO L225 Difference]: With dead ends: 9217 [2022-07-12 09:33:09,086 INFO L226 Difference]: Without dead ends: 9214 [2022-07-12 09:33:09,089 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 [2022-07-12 09:33:09,089 INFO L413 NwaCegarLoop]: 840 mSDtfsCounter, 2800 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:09,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 2326 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2022-07-12 09:33:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 8328. [2022-07-12 09:33:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8328 states, 6537 states have (on average 1.259140278415175) internal successors, (8231), 6653 states have internal predecessors, (8231), 869 states have call successors, (869), 735 states have call predecessors, (869), 920 states have return successors, (1253), 944 states have call predecessors, (1253), 868 states have call successors, (1253) [2022-07-12 09:33:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8328 states to 8328 states and 10353 transitions. [2022-07-12 09:33:09,428 INFO L78 Accepts]: Start accepts. Automaton has 8328 states and 10353 transitions. Word has length 74 [2022-07-12 09:33:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:09,428 INFO L495 AbstractCegarLoop]: Abstraction has 8328 states and 10353 transitions. [2022-07-12 09:33:09,429 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) [2022-07-12 09:33:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 8328 states and 10353 transitions. [2022-07-12 09:33:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:33:09,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:09,430 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] [2022-07-12 09:33:09,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:33:09,647 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 [2022-07-12 09:33:09,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 17284126, now seen corresponding path program 2 times [2022-07-12 09:33:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871200674] [2022-07-12 09:33:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:09,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:09,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871200674] [2022-07-12 09:33:09,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871200674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:09,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:09,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:09,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607351312] [2022-07-12 09:33:09,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:09,698 INFO L87 Difference]: Start difference. First operand 8328 states and 10353 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) [2022-07-12 09:33:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:10,224 INFO L93 Difference]: Finished difference Result 11318 states and 14054 transitions. [2022-07-12 09:33:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:33:10,224 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 [2022-07-12 09:33:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:10,248 INFO L225 Difference]: With dead ends: 11318 [2022-07-12 09:33:10,248 INFO L226 Difference]: Without dead ends: 4700 [2022-07-12 09:33:10,274 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 [2022-07-12 09:33:10,275 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1226 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:10,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1749 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2022-07-12 09:33:10,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 3651. [2022-07-12 09:33:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 2896 states have (on average 1.2613950276243093) internal successors, (3653), 2934 states have internal predecessors, (3653), 384 states have call successors, (384), 315 states have call predecessors, (384), 369 states have return successors, (509), 406 states have call predecessors, (509), 383 states have call successors, (509) [2022-07-12 09:33:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4546 transitions. [2022-07-12 09:33:10,428 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4546 transitions. Word has length 77 [2022-07-12 09:33:10,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:10,428 INFO L495 AbstractCegarLoop]: Abstraction has 3651 states and 4546 transitions. [2022-07-12 09:33:10,428 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) [2022-07-12 09:33:10,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4546 transitions. [2022-07-12 09:33:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:33:10,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:10,430 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] [2022-07-12 09:33:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:33:10,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash 621442966, now seen corresponding path program 1 times [2022-07-12 09:33:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:10,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59054155] [2022-07-12 09:33:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:10,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:33:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:10,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59054155] [2022-07-12 09:33:10,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59054155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:10,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:10,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:10,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210808695] [2022-07-12 09:33:10,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:10,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:10,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:10,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:10,496 INFO L87 Difference]: Start difference. First operand 3651 states and 4546 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) [2022-07-12 09:33:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:11,505 INFO L93 Difference]: Finished difference Result 10215 states and 12513 transitions. [2022-07-12 09:33:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:33:11,506 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 [2022-07-12 09:33:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:11,519 INFO L225 Difference]: With dead ends: 10215 [2022-07-12 09:33:11,519 INFO L226 Difference]: Without dead ends: 5863 [2022-07-12 09:33:11,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:33:11,528 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1067 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:11,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 2390 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2022-07-12 09:33:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5599. [2022-07-12 09:33:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 4375 states have (on average 1.226057142857143) internal successors, (5364), 4456 states have internal predecessors, (5364), 598 states have call successors, (598), 499 states have call predecessors, (598), 624 states have return successors, (889), 648 states have call predecessors, (889), 597 states have call successors, (889) [2022-07-12 09:33:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 6851 transitions. [2022-07-12 09:33:11,736 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 6851 transitions. Word has length 84 [2022-07-12 09:33:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:11,736 INFO L495 AbstractCegarLoop]: Abstraction has 5599 states and 6851 transitions. [2022-07-12 09:33:11,737 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) [2022-07-12 09:33:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 6851 transitions. [2022-07-12 09:33:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:33:11,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:11,739 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] [2022-07-12 09:33:11,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:33:11,739 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash 770149948, now seen corresponding path program 1 times [2022-07-12 09:33:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:11,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749261948] [2022-07-12 09:33:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:33:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:33:11,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:11,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749261948] [2022-07-12 09:33:11,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749261948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:11,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:11,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095678961] [2022-07-12 09:33:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:11,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:11,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:11,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:11,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:11,801 INFO L87 Difference]: Start difference. First operand 5599 states and 6851 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) [2022-07-12 09:33:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:12,853 INFO L93 Difference]: Finished difference Result 9226 states and 11185 transitions. [2022-07-12 09:33:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:33:12,854 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 [2022-07-12 09:33:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:12,864 INFO L225 Difference]: With dead ends: 9226 [2022-07-12 09:33:12,864 INFO L226 Difference]: Without dead ends: 4717 [2022-07-12 09:33:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:33:12,871 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 2268 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2308 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:12,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2308 Valid, 2062 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4717 states. [2022-07-12 09:33:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4717 to 4286. [2022-07-12 09:33:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 3344 states have (on average 1.2135167464114833) internal successors, (4058), 3408 states have internal predecessors, (4058), 457 states have call successors, (457), 376 states have call predecessors, (457), 483 states have return successors, (635), 506 states have call predecessors, (635), 456 states have call successors, (635) [2022-07-12 09:33:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 5150 transitions. [2022-07-12 09:33:13,017 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 5150 transitions. Word has length 93 [2022-07-12 09:33:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 5150 transitions. [2022-07-12 09:33:13,018 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) [2022-07-12 09:33:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 5150 transitions. [2022-07-12 09:33:13,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:33:13,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:13,023 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] [2022-07-12 09:33:13,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:33:13,023 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:13,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1691833410, now seen corresponding path program 1 times [2022-07-12 09:33:13,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:13,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208310132] [2022-07-12 09:33:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:13,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:33:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:33:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:33:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:33:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:33:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:33:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:33:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208310132] [2022-07-12 09:33:13,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208310132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:13,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992893469] [2022-07-12 09:33:13,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:13,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:13,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:13,115 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) [2022-07-12 09:33:13,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:33:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:33:13,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:13,325 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:33:13,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:33:13,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992893469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:13,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:33:13,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:33:13,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002453551] [2022-07-12 09:33:13,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:13,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:13,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:33:13,327 INFO L87 Difference]: Start difference. First operand 4286 states and 5150 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) [2022-07-12 09:33:13,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:13,458 INFO L93 Difference]: Finished difference Result 6450 states and 7738 transitions. [2022-07-12 09:33:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:13,458 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 [2022-07-12 09:33:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:13,465 INFO L225 Difference]: With dead ends: 6450 [2022-07-12 09:33:13,465 INFO L226 Difference]: Without dead ends: 2531 [2022-07-12 09:33:13,471 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 [2022-07-12 09:33:13,472 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 34 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:13,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3375 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:33:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2022-07-12 09:33:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 2375. [2022-07-12 09:33:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1941 states have (on average 1.237506439979392) internal successors, (2402), 1961 states have internal predecessors, (2402), 216 states have call successors, (216), 163 states have call predecessors, (216), 216 states have return successors, (301), 251 states have call predecessors, (301), 215 states have call successors, (301) [2022-07-12 09:33:13,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 2919 transitions. [2022-07-12 09:33:13,580 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 2919 transitions. Word has length 145 [2022-07-12 09:33:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:13,580 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 2919 transitions. [2022-07-12 09:33:13,580 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) [2022-07-12 09:33:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 2919 transitions. [2022-07-12 09:33:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:33:13,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:13,583 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] [2022-07-12 09:33:13,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:33:13,800 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,SelfDestructingSolverStorable13 [2022-07-12 09:33:13,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1863034906, now seen corresponding path program 1 times [2022-07-12 09:33:13,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:13,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163732140] [2022-07-12 09:33:13,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:13,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 09:33:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 09:33:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:33:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 09:33:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 09:33:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:33:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 09:33:13,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:13,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163732140] [2022-07-12 09:33:13,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163732140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:13,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:13,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123591172] [2022-07-12 09:33:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:13,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:13,853 INFO L87 Difference]: Start difference. First operand 2375 states and 2919 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) [2022-07-12 09:33:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:14,243 INFO L93 Difference]: Finished difference Result 2425 states and 2971 transitions. [2022-07-12 09:33:14,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:14,244 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 [2022-07-12 09:33:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:14,248 INFO L225 Difference]: With dead ends: 2425 [2022-07-12 09:33:14,248 INFO L226 Difference]: Without dead ends: 1932 [2022-07-12 09:33:14,249 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 [2022-07-12 09:33:14,249 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1005 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:14,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1543 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-07-12 09:33:14,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1885. [2022-07-12 09:33:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1562 states have (on average 1.2605633802816902) internal successors, (1969), 1577 states have internal predecessors, (1969), 163 states have call successors, (163), 118 states have call predecessors, (163), 158 states have return successors, (225), 190 states have call predecessors, (225), 162 states have call successors, (225) [2022-07-12 09:33:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2357 transitions. [2022-07-12 09:33:14,311 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2357 transitions. Word has length 147 [2022-07-12 09:33:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:14,311 INFO L495 AbstractCegarLoop]: Abstraction has 1885 states and 2357 transitions. [2022-07-12 09:33:14,311 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) [2022-07-12 09:33:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2357 transitions. [2022-07-12 09:33:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:33:14,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:14,313 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] [2022-07-12 09:33:14,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:33:14,313 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:14,314 INFO L85 PathProgramCache]: Analyzing trace with hash 604042568, now seen corresponding path program 1 times [2022-07-12 09:33:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:14,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587684395] [2022-07-12 09:33:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:33:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:33:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 09:33:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 09:33:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 09:33:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 09:33:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 09:33:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:14,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587684395] [2022-07-12 09:33:14,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587684395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:14,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:14,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676187873] [2022-07-12 09:33:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:14,379 INFO L87 Difference]: Start difference. First operand 1885 states and 2357 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) [2022-07-12 09:33:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:15,010 INFO L93 Difference]: Finished difference Result 3166 states and 3875 transitions. [2022-07-12 09:33:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:33:15,010 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 [2022-07-12 09:33:15,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:15,014 INFO L225 Difference]: With dead ends: 3166 [2022-07-12 09:33:15,014 INFO L226 Difference]: Without dead ends: 1784 [2022-07-12 09:33:15,016 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 [2022-07-12 09:33:15,017 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 640 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:15,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2327 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:33:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-07-12 09:33:15,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1638. [2022-07-12 09:33:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1366 states have (on average 1.2767203513909224) internal successors, (1744), 1379 states have internal predecessors, (1744), 139 states have call successors, (139), 98 states have call predecessors, (139), 131 states have return successors, (186), 161 states have call predecessors, (186), 138 states have call successors, (186) [2022-07-12 09:33:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2069 transitions. [2022-07-12 09:33:15,070 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2069 transitions. Word has length 159 [2022-07-12 09:33:15,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:15,070 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2069 transitions. [2022-07-12 09:33:15,070 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) [2022-07-12 09:33:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2069 transitions. [2022-07-12 09:33:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 09:33:15,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:15,073 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] [2022-07-12 09:33:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:33:15,073 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1591452551, now seen corresponding path program 1 times [2022-07-12 09:33:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388868634] [2022-07-12 09:33:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:33:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:33:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 09:33:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 09:33:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 09:33:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 09:33:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 09:33:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 09:33:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:15,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388868634] [2022-07-12 09:33:15,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388868634] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:15,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252893949] [2022-07-12 09:33:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:15,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:15,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:15,160 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) [2022-07-12 09:33:15,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:33:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 09:33:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 09:33:15,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:33:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 09:33:15,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252893949] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:33:15,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:33:15,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-12 09:33:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528170389] [2022-07-12 09:33:15,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:33:15,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 09:33:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:15,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 09:33:15,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:33:15,629 INFO L87 Difference]: Start difference. First operand 1638 states and 2069 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) [2022-07-12 09:33:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:16,578 INFO L93 Difference]: Finished difference Result 3432 states and 4271 transitions. [2022-07-12 09:33:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 09:33:16,579 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 [2022-07-12 09:33:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:16,585 INFO L225 Difference]: With dead ends: 3432 [2022-07-12 09:33:16,585 INFO L226 Difference]: Without dead ends: 2029 [2022-07-12 09:33:16,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 355 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-12 09:33:16,588 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 2424 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:16,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 2413 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-07-12 09:33:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1916. [2022-07-12 09:33:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1569 states have (on average 1.2402804333970683) internal successors, (1946), 1583 states have internal predecessors, (1946), 179 states have call successors, (179), 136 states have call predecessors, (179), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-12 09:33:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2380 transitions. [2022-07-12 09:33:16,682 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2380 transitions. Word has length 162 [2022-07-12 09:33:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:16,682 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 2380 transitions. [2022-07-12 09:33:16,683 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) [2022-07-12 09:33:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2380 transitions. [2022-07-12 09:33:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:16,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:16,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:16,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:33:16,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:16,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:16,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1328549862, now seen corresponding path program 1 times [2022-07-12 09:33:16,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:16,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833510797] [2022-07-12 09:33:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:16,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:17,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:17,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833510797] [2022-07-12 09:33:17,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833510797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:17,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:17,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:33:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996048278] [2022-07-12 09:33:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:17,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:33:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:33:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:33:17,024 INFO L87 Difference]: Start difference. First operand 1916 states and 2380 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:18,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:18,184 INFO L93 Difference]: Finished difference Result 2392 states and 3150 transitions. [2022-07-12 09:33:18,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:18,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-12 09:33:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:18,189 INFO L225 Difference]: With dead ends: 2392 [2022-07-12 09:33:18,189 INFO L226 Difference]: Without dead ends: 2047 [2022-07-12 09:33:18,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:18,191 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1056 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:18,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 1266 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:18,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-12 09:33:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1916. [2022-07-12 09:33:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1569 states have (on average 1.2396430847673678) internal successors, (1945), 1583 states have internal predecessors, (1945), 179 states have call successors, (179), 136 states have call predecessors, (179), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-12 09:33:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2379 transitions. [2022-07-12 09:33:18,284 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2379 transitions. Word has length 167 [2022-07-12 09:33:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:18,285 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 2379 transitions. [2022-07-12 09:33:18,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2379 transitions. [2022-07-12 09:33:18,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:18,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:18,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:18,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:33:18,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:18,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:18,287 INFO L85 PathProgramCache]: Analyzing trace with hash -771188568, now seen corresponding path program 1 times [2022-07-12 09:33:18,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:18,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237758325] [2022-07-12 09:33:18,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237758325] [2022-07-12 09:33:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237758325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:18,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:18,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:33:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048140568] [2022-07-12 09:33:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:18,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:33:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:33:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:33:18,399 INFO L87 Difference]: Start difference. First operand 1916 states and 2379 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:19,493 INFO L93 Difference]: Finished difference Result 2384 states and 3133 transitions. [2022-07-12 09:33:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:19,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-12 09:33:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:19,498 INFO L225 Difference]: With dead ends: 2384 [2022-07-12 09:33:19,498 INFO L226 Difference]: Without dead ends: 2047 [2022-07-12 09:33:19,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:19,499 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1047 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:19,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1264 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2022-07-12 09:33:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1916. [2022-07-12 09:33:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1569 states have (on average 1.2390057361376674) internal successors, (1944), 1583 states have internal predecessors, (1944), 179 states have call successors, (179), 136 states have call predecessors, (179), 166 states have return successors, (255), 197 states have call predecessors, (255), 178 states have call successors, (255) [2022-07-12 09:33:19,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2378 transitions. [2022-07-12 09:33:19,595 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2378 transitions. Word has length 167 [2022-07-12 09:33:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:19,595 INFO L495 AbstractCegarLoop]: Abstraction has 1916 states and 2378 transitions. [2022-07-12 09:33:19,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2378 transitions. [2022-07-12 09:33:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:19,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:19,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:33:19,598 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 151978858, now seen corresponding path program 1 times [2022-07-12 09:33:19,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538693892] [2022-07-12 09:33:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:19,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:19,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538693892] [2022-07-12 09:33:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538693892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:19,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:19,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:19,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402789814] [2022-07-12 09:33:19,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:19,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:19,706 INFO L87 Difference]: Start difference. First operand 1916 states and 2378 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-12 09:33:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:21,658 INFO L93 Difference]: Finished difference Result 2860 states and 3905 transitions. [2022-07-12 09:33:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:21,664 INFO L225 Difference]: With dead ends: 2860 [2022-07-12 09:33:21,664 INFO L226 Difference]: Without dead ends: 2527 [2022-07-12 09:33:21,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:21,666 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1652 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:21,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 1808 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:33:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2022-07-12 09:33:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 2266. [2022-07-12 09:33:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 1892 states have (on average 1.2996828752642706) internal successors, (2459), 1907 states have internal predecessors, (2459), 199 states have call successors, (199), 142 states have call predecessors, (199), 173 states have return successors, (278), 217 states have call predecessors, (278), 198 states have call successors, (278) [2022-07-12 09:33:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2936 transitions. [2022-07-12 09:33:21,780 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2936 transitions. Word has length 167 [2022-07-12 09:33:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:21,780 INFO L495 AbstractCegarLoop]: Abstraction has 2266 states and 2936 transitions. [2022-07-12 09:33:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-12 09:33:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2936 transitions. [2022-07-12 09:33:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:21,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:21,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:21,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:33:21,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1151565038, now seen corresponding path program 1 times [2022-07-12 09:33:21,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:21,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514545853] [2022-07-12 09:33:21,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:21,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514545853] [2022-07-12 09:33:21,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514545853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:21,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:21,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:21,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119940343] [2022-07-12 09:33:21,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:21,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:21,872 INFO L87 Difference]: Start difference. First operand 2266 states and 2936 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:24,499 INFO L93 Difference]: Finished difference Result 3708 states and 5270 transitions. [2022-07-12 09:33:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:24,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:24,506 INFO L225 Difference]: With dead ends: 3708 [2022-07-12 09:33:24,507 INFO L226 Difference]: Without dead ends: 3025 [2022-07-12 09:33:24,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:24,509 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1682 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:24,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 2999 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:33:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2022-07-12 09:33:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2591. [2022-07-12 09:33:24,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2190 states have (on average 1.3351598173515982) internal successors, (2924), 2206 states have internal predecessors, (2924), 219 states have call successors, (219), 148 states have call predecessors, (219), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-12 09:33:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3443 transitions. [2022-07-12 09:33:24,659 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3443 transitions. Word has length 167 [2022-07-12 09:33:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:24,659 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3443 transitions. [2022-07-12 09:33:24,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3443 transitions. [2022-07-12 09:33:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:24,661 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:24,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:24,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:33:24,662 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1489852588, now seen corresponding path program 1 times [2022-07-12 09:33:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:24,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283687465] [2022-07-12 09:33:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:24,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:24,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283687465] [2022-07-12 09:33:24,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283687465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:24,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:24,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:24,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252031920] [2022-07-12 09:33:24,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:24,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:24,796 INFO L87 Difference]: Start difference. First operand 2591 states and 3443 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:25,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:25,955 INFO L93 Difference]: Finished difference Result 4049 states and 5815 transitions. [2022-07-12 09:33:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:25,997 INFO L225 Difference]: With dead ends: 4049 [2022-07-12 09:33:25,997 INFO L226 Difference]: Without dead ends: 3041 [2022-07-12 09:33:26,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:26,002 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1251 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:26,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1783 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2022-07-12 09:33:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2591. [2022-07-12 09:33:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2190 states have (on average 1.3337899543378995) internal successors, (2921), 2206 states have internal predecessors, (2921), 219 states have call successors, (219), 148 states have call predecessors, (219), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-12 09:33:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3440 transitions. [2022-07-12 09:33:26,180 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3440 transitions. Word has length 167 [2022-07-12 09:33:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:26,180 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3440 transitions. [2022-07-12 09:33:26,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3440 transitions. [2022-07-12 09:33:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:26,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:26,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:33:26,184 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:26,184 INFO L85 PathProgramCache]: Analyzing trace with hash 949423082, now seen corresponding path program 1 times [2022-07-12 09:33:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:26,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931159537] [2022-07-12 09:33:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:26,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931159537] [2022-07-12 09:33:26,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931159537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:26,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:26,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76919181] [2022-07-12 09:33:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:26,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:26,299 INFO L87 Difference]: Start difference. First operand 2591 states and 3440 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:27,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:27,563 INFO L93 Difference]: Finished difference Result 4045 states and 5798 transitions. [2022-07-12 09:33:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:27,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:27,577 INFO L225 Difference]: With dead ends: 4045 [2022-07-12 09:33:27,578 INFO L226 Difference]: Without dead ends: 3037 [2022-07-12 09:33:27,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:27,580 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1327 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:27,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1739 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-07-12 09:33:27,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2591. [2022-07-12 09:33:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2591 states, 2190 states have (on average 1.3324200913242008) internal successors, (2918), 2206 states have internal predecessors, (2918), 219 states have call successors, (219), 148 states have call predecessors, (219), 180 states have return successors, (300), 238 states have call predecessors, (300), 218 states have call successors, (300) [2022-07-12 09:33:27,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2591 states to 2591 states and 3437 transitions. [2022-07-12 09:33:27,781 INFO L78 Accepts]: Start accepts. Automaton has 2591 states and 3437 transitions. Word has length 167 [2022-07-12 09:33:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:27,781 INFO L495 AbstractCegarLoop]: Abstraction has 2591 states and 3437 transitions. [2022-07-12 09:33:27,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2591 states and 3437 transitions. [2022-07-12 09:33:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:27,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:27,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:27,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:33:27,785 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 793442540, now seen corresponding path program 1 times [2022-07-12 09:33:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:27,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742261821] [2022-07-12 09:33:27,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:27,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:27,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742261821] [2022-07-12 09:33:27,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742261821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:27,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:27,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299549967] [2022-07-12 09:33:27,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:27,890 INFO L87 Difference]: Start difference. First operand 2591 states and 3437 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:30,147 INFO L93 Difference]: Finished difference Result 4949 states and 7221 transitions. [2022-07-12 09:33:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:30,156 INFO L225 Difference]: With dead ends: 4949 [2022-07-12 09:33:30,157 INFO L226 Difference]: Without dead ends: 3941 [2022-07-12 09:33:30,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:30,162 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1662 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:30,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2975 Invalid, 3148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:33:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2022-07-12 09:33:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3251. [2022-07-12 09:33:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2796 states have (on average 1.3801859799713876) internal successors, (3859), 2814 states have internal predecessors, (3859), 259 states have call successors, (259), 160 states have call predecessors, (259), 194 states have return successors, (348), 280 states have call predecessors, (348), 258 states have call successors, (348) [2022-07-12 09:33:30,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4466 transitions. [2022-07-12 09:33:30,339 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4466 transitions. Word has length 167 [2022-07-12 09:33:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:30,339 INFO L495 AbstractCegarLoop]: Abstraction has 3251 states and 4466 transitions. [2022-07-12 09:33:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:30,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4466 transitions. [2022-07-12 09:33:30,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:30,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:30,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:30,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:33:30,342 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1204052906, now seen corresponding path program 1 times [2022-07-12 09:33:30,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:30,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928323230] [2022-07-12 09:33:30,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:30,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:30,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:30,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928323230] [2022-07-12 09:33:30,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928323230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:30,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:30,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642223685] [2022-07-12 09:33:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:30,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:30,439 INFO L87 Difference]: Start difference. First operand 3251 states and 4466 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:31,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:31,756 INFO L93 Difference]: Finished difference Result 5597 states and 8239 transitions. [2022-07-12 09:33:31,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:31,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:31,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:31,763 INFO L225 Difference]: With dead ends: 5597 [2022-07-12 09:33:31,764 INFO L226 Difference]: Without dead ends: 3929 [2022-07-12 09:33:31,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:31,767 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1453 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:31,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1540 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:31,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2022-07-12 09:33:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 3251. [2022-07-12 09:33:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2796 states have (on average 1.3783977110157368) internal successors, (3854), 2814 states have internal predecessors, (3854), 259 states have call successors, (259), 160 states have call predecessors, (259), 194 states have return successors, (348), 280 states have call predecessors, (348), 258 states have call successors, (348) [2022-07-12 09:33:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 4461 transitions. [2022-07-12 09:33:31,948 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 4461 transitions. Word has length 167 [2022-07-12 09:33:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:31,948 INFO L495 AbstractCegarLoop]: Abstraction has 3251 states and 4461 transitions. [2022-07-12 09:33:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 4461 transitions. [2022-07-12 09:33:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:31,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:31,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:31,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:33:31,951 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:31,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -583816916, now seen corresponding path program 1 times [2022-07-12 09:33:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:31,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211607291] [2022-07-12 09:33:31,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:32,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:32,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211607291] [2022-07-12 09:33:32,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211607291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:32,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:32,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749794582] [2022-07-12 09:33:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:32,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:32,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:32,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:32,037 INFO L87 Difference]: Start difference. First operand 3251 states and 4461 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:34,421 INFO L93 Difference]: Finished difference Result 7353 states and 10986 transitions. [2022-07-12 09:33:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:34,436 INFO L225 Difference]: With dead ends: 7353 [2022-07-12 09:33:34,437 INFO L226 Difference]: Without dead ends: 5685 [2022-07-12 09:33:34,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:34,442 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 1654 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:34,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 2964 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:33:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2022-07-12 09:33:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 4573. [2022-07-12 09:33:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4010 states have (on average 1.428927680798005) internal successors, (5730), 4032 states have internal predecessors, (5730), 339 states have call successors, (339), 184 states have call predecessors, (339), 222 states have return successors, (450), 364 states have call predecessors, (450), 338 states have call successors, (450) [2022-07-12 09:33:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 6519 transitions. [2022-07-12 09:33:34,750 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 6519 transitions. Word has length 167 [2022-07-12 09:33:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:34,750 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 6519 transitions. [2022-07-12 09:33:34,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:34,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 6519 transitions. [2022-07-12 09:33:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:34,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:34,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:34,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:33:34,753 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1575267178, now seen corresponding path program 1 times [2022-07-12 09:33:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:34,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461488777] [2022-07-12 09:33:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461488777] [2022-07-12 09:33:34,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461488777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:34,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:34,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488494029] [2022-07-12 09:33:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:34,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:34,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:34,853 INFO L87 Difference]: Start difference. First operand 4573 states and 6519 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:36,353 INFO L93 Difference]: Finished difference Result 8693 states and 13106 transitions. [2022-07-12 09:33:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:36,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:36,370 INFO L225 Difference]: With dead ends: 8693 [2022-07-12 09:33:36,371 INFO L226 Difference]: Without dead ends: 5703 [2022-07-12 09:33:36,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:36,377 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1452 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:36,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1533 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-12 09:33:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 4573. [2022-07-12 09:33:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4010 states have (on average 1.4266832917705736) internal successors, (5721), 4032 states have internal predecessors, (5721), 339 states have call successors, (339), 184 states have call predecessors, (339), 222 states have return successors, (450), 364 states have call predecessors, (450), 338 states have call successors, (450) [2022-07-12 09:33:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 6510 transitions. [2022-07-12 09:33:36,791 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 6510 transitions. Word has length 167 [2022-07-12 09:33:36,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:36,792 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 6510 transitions. [2022-07-12 09:33:36,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:36,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 6510 transitions. [2022-07-12 09:33:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:36,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:36,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:36,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:33:36,797 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1644915052, now seen corresponding path program 1 times [2022-07-12 09:33:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:36,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703635438] [2022-07-12 09:33:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:36,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:36,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:36,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703635438] [2022-07-12 09:33:36,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703635438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:36,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:36,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:36,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038158391] [2022-07-12 09:33:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:36,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:36,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:36,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:36,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:36,916 INFO L87 Difference]: Start difference. First operand 4573 states and 6510 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:40,040 INFO L93 Difference]: Finished difference Result 12159 states and 18510 transitions. [2022-07-12 09:33:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:40,061 INFO L225 Difference]: With dead ends: 12159 [2022-07-12 09:33:40,062 INFO L226 Difference]: Without dead ends: 9169 [2022-07-12 09:33:40,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:40,068 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 1649 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:40,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 2951 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:33:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2022-07-12 09:33:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 7231. [2022-07-12 09:33:40,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 6452 states have (on average 1.4694668319900805) internal successors, (9481), 6482 states have internal predecessors, (9481), 499 states have call successors, (499), 232 states have call predecessors, (499), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-12 09:33:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10652 transitions. [2022-07-12 09:33:40,583 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10652 transitions. Word has length 167 [2022-07-12 09:33:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:40,583 INFO L495 AbstractCegarLoop]: Abstraction has 7231 states and 10652 transitions. [2022-07-12 09:33:40,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10652 transitions. [2022-07-12 09:33:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:40,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:40,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:40,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:33:40,587 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:40,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2062803754, now seen corresponding path program 1 times [2022-07-12 09:33:40,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:40,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87894571] [2022-07-12 09:33:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:40,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:40,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87894571] [2022-07-12 09:33:40,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87894571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:40,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:40,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120640893] [2022-07-12 09:33:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:40,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:40,702 INFO L87 Difference]: Start difference. First operand 7231 states and 10652 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:42,477 INFO L93 Difference]: Finished difference Result 14867 states and 22821 transitions. [2022-07-12 09:33:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:42,493 INFO L225 Difference]: With dead ends: 14867 [2022-07-12 09:33:42,494 INFO L226 Difference]: Without dead ends: 9219 [2022-07-12 09:33:42,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:42,507 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1452 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:42,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1522 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9219 states. [2022-07-12 09:33:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9219 to 7231. [2022-07-12 09:33:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 6452 states have (on average 1.466831990080595) internal successors, (9464), 6482 states have internal predecessors, (9464), 499 states have call successors, (499), 232 states have call predecessors, (499), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-12 09:33:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10635 transitions. [2022-07-12 09:33:42,997 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10635 transitions. Word has length 167 [2022-07-12 09:33:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:42,998 INFO L495 AbstractCegarLoop]: Abstraction has 7231 states and 10635 transitions. [2022-07-12 09:33:42,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10635 transitions. [2022-07-12 09:33:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:43,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:43,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:43,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 09:33:43,002 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 445363304, now seen corresponding path program 1 times [2022-07-12 09:33:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:43,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509246621] [2022-07-12 09:33:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:43,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509246621] [2022-07-12 09:33:43,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509246621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:43,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:43,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:43,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734992104] [2022-07-12 09:33:43,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:43,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:43,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:43,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:43,133 INFO L87 Difference]: Start difference. First operand 7231 states and 10635 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:44,839 INFO L93 Difference]: Finished difference Result 14849 states and 22734 transitions. [2022-07-12 09:33:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:44,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:44,852 INFO L225 Difference]: With dead ends: 14849 [2022-07-12 09:33:44,853 INFO L226 Difference]: Without dead ends: 9201 [2022-07-12 09:33:44,858 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 [2022-07-12 09:33:44,859 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1289 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:44,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 1724 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9201 states. [2022-07-12 09:33:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9201 to 7231. [2022-07-12 09:33:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7231 states, 6452 states have (on average 1.4641971481711098) internal successors, (9447), 6482 states have internal predecessors, (9447), 499 states have call successors, (499), 232 states have call predecessors, (499), 278 states have return successors, (672), 532 states have call predecessors, (672), 498 states have call successors, (672) [2022-07-12 09:33:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7231 states to 7231 states and 10618 transitions. [2022-07-12 09:33:45,352 INFO L78 Accepts]: Start accepts. Automaton has 7231 states and 10618 transitions. Word has length 167 [2022-07-12 09:33:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:45,352 INFO L495 AbstractCegarLoop]: Abstraction has 7231 states and 10618 transitions. [2022-07-12 09:33:45,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:45,352 INFO L276 IsEmpty]: Start isEmpty. Operand 7231 states and 10618 transitions. [2022-07-12 09:33:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:45,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:45,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:45,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 09:33:45,356 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 808829802, now seen corresponding path program 1 times [2022-07-12 09:33:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:45,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336701015] [2022-07-12 09:33:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:45,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336701015] [2022-07-12 09:33:45,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336701015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:45,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:45,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009987220] [2022-07-12 09:33:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:45,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:45,490 INFO L87 Difference]: Start difference. First operand 7231 states and 10618 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:49,841 INFO L93 Difference]: Finished difference Result 24153 states and 37152 transitions. [2022-07-12 09:33:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:49,874 INFO L225 Difference]: With dead ends: 24153 [2022-07-12 09:33:49,874 INFO L226 Difference]: Without dead ends: 18505 [2022-07-12 09:33:49,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:49,886 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 2037 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:49,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 2916 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:33:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18505 states. [2022-07-12 09:33:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18505 to 12483. [2022-07-12 09:33:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12483 states, 11288 states have (on average 1.4938873139617292) internal successors, (16863), 11334 states have internal predecessors, (16863), 803 states have call successors, (803), 328 states have call predecessors, (803), 390 states have return successors, (1154), 852 states have call predecessors, (1154), 802 states have call successors, (1154) [2022-07-12 09:33:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12483 states to 12483 states and 18820 transitions. [2022-07-12 09:33:50,898 INFO L78 Accepts]: Start accepts. Automaton has 12483 states and 18820 transitions. Word has length 167 [2022-07-12 09:33:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:50,898 INFO L495 AbstractCegarLoop]: Abstraction has 12483 states and 18820 transitions. [2022-07-12 09:33:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 12483 states and 18820 transitions. [2022-07-12 09:33:50,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:33:50,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:50,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 09:33:50,903 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:50,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1097649192, now seen corresponding path program 1 times [2022-07-12 09:33:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:50,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040835293] [2022-07-12 09:33:50,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:33:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:33:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:33:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:33:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:51,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040835293] [2022-07-12 09:33:51,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040835293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:51,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:51,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:51,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885391398] [2022-07-12 09:33:51,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:51,014 INFO L87 Difference]: Start difference. First operand 12483 states and 18820 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:33:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:57,788 INFO L93 Difference]: Finished difference Result 45035 states and 70012 transitions. [2022-07-12 09:33:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:33:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:57,948 INFO L225 Difference]: With dead ends: 45035 [2022-07-12 09:33:57,948 INFO L226 Difference]: Without dead ends: 34135 [2022-07-12 09:33:57,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:57,981 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 1722 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 3375 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:57,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 3071 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3375 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:33:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34135 states. [2022-07-12 09:34:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34135 to 23044. [2022-07-12 09:34:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23044 states, 21033 states have (on average 1.5130984643179766) internal successors, (31825), 21111 states have internal predecessors, (31825), 1395 states have call successors, (1395), 520 states have call predecessors, (1395), 614 states have return successors, (2264), 1476 states have call predecessors, (2264), 1394 states have call successors, (2264) [2022-07-12 09:34:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23044 states to 23044 states and 35484 transitions. [2022-07-12 09:34:00,147 INFO L78 Accepts]: Start accepts. Automaton has 23044 states and 35484 transitions. Word has length 167 [2022-07-12 09:34:00,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:00,147 INFO L495 AbstractCegarLoop]: Abstraction has 23044 states and 35484 transitions. [2022-07-12 09:34:00,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:34:00,148 INFO L276 IsEmpty]: Start isEmpty. Operand 23044 states and 35484 transitions. [2022-07-12 09:34:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:34:00,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:00,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:00,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 09:34:00,197 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:00,197 INFO L85 PathProgramCache]: Analyzing trace with hash 552776618, now seen corresponding path program 1 times [2022-07-12 09:34:00,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:00,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836280111] [2022-07-12 09:34:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:34:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:34:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:34:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:34:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:00,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:00,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836280111] [2022-07-12 09:34:00,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836280111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:00,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:00,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404651402] [2022-07-12 09:34:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:00,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:00,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:00,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:00,292 INFO L87 Difference]: Start difference. First operand 23044 states and 35484 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:34:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:11,274 INFO L93 Difference]: Finished difference Result 86410 states and 135778 transitions. [2022-07-12 09:34:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:34:11,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:34:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:11,426 INFO L225 Difference]: With dead ends: 86410 [2022-07-12 09:34:11,426 INFO L226 Difference]: Without dead ends: 64949 [2022-07-12 09:34:11,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:34:11,467 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1958 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 2910 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:34:11,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64949 states. [2022-07-12 09:34:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64949 to 44133. [2022-07-12 09:34:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44133 states, 40522 states have (on average 1.5245792409061745) internal successors, (61779), 40664 states have internal predecessors, (61779), 2547 states have call successors, (2547), 904 states have call predecessors, (2547), 1062 states have return successors, (4938), 2692 states have call predecessors, (4938), 2546 states have call successors, (4938) [2022-07-12 09:34:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44133 states to 44133 states and 69264 transitions. [2022-07-12 09:34:15,806 INFO L78 Accepts]: Start accepts. Automaton has 44133 states and 69264 transitions. Word has length 167 [2022-07-12 09:34:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:15,806 INFO L495 AbstractCegarLoop]: Abstraction has 44133 states and 69264 transitions. [2022-07-12 09:34:15,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:34:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 44133 states and 69264 transitions. [2022-07-12 09:34:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:34:15,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:15,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:15,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 09:34:15,830 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1227936744, now seen corresponding path program 1 times [2022-07-12 09:34:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:15,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433126354] [2022-07-12 09:34:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:34:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:34:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:34:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:34:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:15,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433126354] [2022-07-12 09:34:15,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433126354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:15,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:15,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:15,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491139188] [2022-07-12 09:34:15,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:15,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:15,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:15,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:15,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:15,960 INFO L87 Difference]: Start difference. First operand 44133 states and 69264 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:34:35,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:35,784 INFO L93 Difference]: Finished difference Result 167977 states and 267368 transitions. [2022-07-12 09:34:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:34:35,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-12 09:34:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:36,206 INFO L225 Difference]: With dead ends: 167977 [2022-07-12 09:34:36,206 INFO L226 Difference]: Without dead ends: 125427 [2022-07-12 09:34:36,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:34:36,329 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 1918 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:36,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 2905 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:34:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125427 states. [2022-07-12 09:34:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125427 to 86246. [2022-07-12 09:34:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86246 states, 79499 states have (on average 1.53145322582674) internal successors, (121749), 79769 states have internal predecessors, (121749), 4787 states have call successors, (4787), 1672 states have call predecessors, (4787), 1958 states have return successors, (11680), 5060 states have call predecessors, (11680), 4786 states have call successors, (11680) [2022-07-12 09:34:45,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86246 states to 86246 states and 138216 transitions. [2022-07-12 09:34:45,496 INFO L78 Accepts]: Start accepts. Automaton has 86246 states and 138216 transitions. Word has length 167 [2022-07-12 09:34:45,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:45,496 INFO L495 AbstractCegarLoop]: Abstraction has 86246 states and 138216 transitions. [2022-07-12 09:34:45,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-12 09:34:45,496 INFO L276 IsEmpty]: Start isEmpty. Operand 86246 states and 138216 transitions. [2022-07-12 09:34:45,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 09:34:45,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:45,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:45,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 09:34:45,531 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 279884778, now seen corresponding path program 1 times [2022-07-12 09:34:45,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:45,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667323515] [2022-07-12 09:34:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:45,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 09:34:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:34:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 09:34:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 09:34:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:45,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667323515] [2022-07-12 09:34:45,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667323515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:45,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:45,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364731738] [2022-07-12 09:34:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:45,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:45,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:45,703 INFO L87 Difference]: Start difference. First operand 86246 states and 138216 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)