./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.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 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:09:44,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:09:44,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:09:44,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:09:44,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:09:44,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:09:44,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:09:44,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:09:44,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:09:44,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:09:44,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:09:44,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:09:44,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:09:44,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:09:44,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:09:44,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:09:44,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:09:44,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:09:44,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:09:44,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:09:44,336 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:09:44,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:09:44,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:09:44,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:09:44,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:09:44,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:09:44,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:09:44,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:09:44,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:09:44,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:09:44,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:09:44,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:09:44,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:09:44,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:09:44,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:09:44,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:09:44,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:09:44,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:09:44,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:09:44,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:09:44,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:09:44,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:09:44,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:09:44,403 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:09:44,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:09:44,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:09:44,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:09:44,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:09:44,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:09:44,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:09:44,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:09:44,406 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:09:44,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:09:44,407 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:09:44,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:09:44,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:09:44,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:09:44,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:09:44,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:09:44,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:09:44,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:09:44,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:09:44,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:09:44,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:09:44,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:09:44,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:09:44,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:09:44,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:09:44,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:09:44,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:09:44,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:09:44,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:09:44,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:09:44,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:09:44,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:09:44,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:09:44,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c [2022-07-21 08:09:44,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:09:44,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:09:44,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:09:44,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:09:44,760 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:09:44,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-21 08:09:44,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38985bceb/f86b53d291d746fdb665954d70a23ad9/FLAG35573c3b3 [2022-07-21 08:09:45,317 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:09:45,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-21 08:09:45,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38985bceb/f86b53d291d746fdb665954d70a23ad9/FLAG35573c3b3 [2022-07-21 08:09:45,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38985bceb/f86b53d291d746fdb665954d70a23ad9 [2022-07-21 08:09:45,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:09:45,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:09:45,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:09:45,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:09:45,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:09:45,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:09:45" (1/1) ... [2022-07-21 08:09:45,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23773f92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:45, skipping insertion in model container [2022-07-21 08:09:45,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:09:45" (1/1) ... [2022-07-21 08:09:45,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:09:45,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:09:46,024 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_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-21 08:09:46,099 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_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-21 08:09:46,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:09:46,193 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:09:46,203 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_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-21 08:09:46,226 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_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-21 08:09:46,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:09:46,281 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:09:46,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46 WrapperNode [2022-07-21 08:09:46,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:09:46,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:09:46,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:09:46,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:09:46,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,374 INFO L137 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 614 [2022-07-21 08:09:46,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:09:46,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:09:46,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:09:46,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:09:46,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:09:46,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:09:46,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:09:46,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:09:46,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (1/1) ... [2022-07-21 08:09:46,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:09:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:09:46,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:09:46,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:09:46,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:09:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:09:46,519 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:09:46,519 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:09:46,520 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:09:46,520 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:09:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:09:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:09:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:09:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:09:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:09:46,521 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:09:46,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:09:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:09:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:09:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:09:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:09:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:09:46,522 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:09:46,522 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:09:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:09:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:09:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:09:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:09:46,523 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:09:46,523 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:09:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:09:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:09:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:09:46,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:09:46,524 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:09:46,525 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:09:46,662 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:09:46,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:09:47,089 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-21 08:09:47,089 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-21 08:09:47,134 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:09:47,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:09:47,159 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-21 08:09:47,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:09:47 BoogieIcfgContainer [2022-07-21 08:09:47,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:09:47,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:09:47,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:09:47,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:09:47,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:09:45" (1/3) ... [2022-07-21 08:09:47,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1bd928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:09:47, skipping insertion in model container [2022-07-21 08:09:47,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:09:46" (2/3) ... [2022-07-21 08:09:47,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1bd928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:09:47, skipping insertion in model container [2022-07-21 08:09:47,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:09:47" (3/3) ... [2022-07-21 08:09:47,172 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-21 08:09:47,184 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:09:47,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:09:47,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:09:47,238 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@5bfed789, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76f7dc19 [2022-07-21 08:09:47,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:09:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-21 08:09:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:09:47,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:47,260 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] [2022-07-21 08:09:47,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:47,265 INFO L85 PathProgramCache]: Analyzing trace with hash 864909050, now seen corresponding path program 1 times [2022-07-21 08:09:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:47,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3802216] [2022-07-21 08:09:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:47,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:09:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:09:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:09:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3802216] [2022-07-21 08:09:47,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3802216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:47,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:47,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:09:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062758144] [2022-07-21 08:09:47,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:47,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:09:47,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:09:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:09:47,790 INFO L87 Difference]: Start difference. First operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) 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) [2022-07-21 08:09:49,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:49,032 INFO L93 Difference]: Finished difference Result 764 states and 1182 transitions. [2022-07-21 08:09:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:09:49,035 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 [2022-07-21 08:09:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:49,064 INFO L225 Difference]: With dead ends: 764 [2022-07-21 08:09:49,065 INFO L226 Difference]: Without dead ends: 475 [2022-07-21 08:09:49,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:09:49,079 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1058 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:49,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1635 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:09:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-21 08:09:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2022-07-21 08:09:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 333 states have (on average 1.4804804804804805) internal successors, (493), 340 states have internal predecessors, (493), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2022-07-21 08:09:49,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2022-07-21 08:09:49,154 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 65 [2022-07-21 08:09:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:49,154 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2022-07-21 08:09:49,155 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) [2022-07-21 08:09:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2022-07-21 08:09:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:09:49,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:49,159 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] [2022-07-21 08:09:49,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:09:49,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:49,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1163677060, now seen corresponding path program 1 times [2022-07-21 08:09:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:49,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949161990] [2022-07-21 08:09:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:09:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:09:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:09:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949161990] [2022-07-21 08:09:49,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949161990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:49,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:49,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:09:49,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799009405] [2022-07-21 08:09:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:09:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:09:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:09:49,295 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:09:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:51,154 INFO L93 Difference]: Finished difference Result 1498 states and 2175 transitions. [2022-07-21 08:09:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:09:51,155 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-21 08:09:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:51,167 INFO L225 Difference]: With dead ends: 1498 [2022-07-21 08:09:51,168 INFO L226 Difference]: Without dead ends: 1273 [2022-07-21 08:09:51,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:09:51,171 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2404 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:51,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 2308 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:09:51,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-07-21 08:09:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1177. [2022-07-21 08:09:51,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 951 states have (on average 1.4111461619348056) internal successors, (1342), 971 states have internal predecessors, (1342), 130 states have call successors, (130), 81 states have call predecessors, (130), 94 states have return successors, (161), 127 states have call predecessors, (161), 128 states have call successors, (161) [2022-07-21 08:09:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1633 transitions. [2022-07-21 08:09:51,272 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1633 transitions. Word has length 65 [2022-07-21 08:09:51,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:51,273 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1633 transitions. [2022-07-21 08:09:51,273 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:09:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1633 transitions. [2022-07-21 08:09:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:09:51,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:51,276 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] [2022-07-21 08:09:51,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:09:51,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1733422016, now seen corresponding path program 1 times [2022-07-21 08:09:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:51,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442514080] [2022-07-21 08:09:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:09:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:09:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:51,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:51,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442514080] [2022-07-21 08:09:51,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442514080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:51,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:51,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:09:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062584238] [2022-07-21 08:09:51,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:51,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:09:51,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:09:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:09:51,406 INFO L87 Difference]: Start difference. First operand 1177 states and 1633 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-21 08:09:52,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:52,235 INFO L93 Difference]: Finished difference Result 2277 states and 3157 transitions. [2022-07-21 08:09:52,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:09:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-21 08:09:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:52,243 INFO L225 Difference]: With dead ends: 2277 [2022-07-21 08:09:52,243 INFO L226 Difference]: Without dead ends: 1287 [2022-07-21 08:09:52,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:09:52,248 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 345 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:52,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1865 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:09:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-07-21 08:09:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1217. [2022-07-21 08:09:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 983 states have (on average 1.3957273652085453) internal successors, (1372), 1003 states have internal predecessors, (1372), 130 states have call successors, (130), 81 states have call predecessors, (130), 102 states have return successors, (169), 135 states have call predecessors, (169), 128 states have call successors, (169) [2022-07-21 08:09:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1671 transitions. [2022-07-21 08:09:52,315 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1671 transitions. Word has length 66 [2022-07-21 08:09:52,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:52,315 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1671 transitions. [2022-07-21 08:09:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-21 08:09:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1671 transitions. [2022-07-21 08:09:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:09:52,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:52,317 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] [2022-07-21 08:09:52,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:09:52,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash 704062718, now seen corresponding path program 1 times [2022-07-21 08:09:52,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:52,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433879866] [2022-07-21 08:09:52,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:52,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:09:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:09:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:52,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:52,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433879866] [2022-07-21 08:09:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433879866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:52,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:52,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:09:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035579909] [2022-07-21 08:09:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:09:52,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:09:52,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:09:52,418 INFO L87 Difference]: Start difference. First operand 1217 states and 1671 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-21 08:09:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:54,217 INFO L93 Difference]: Finished difference Result 3887 states and 5372 transitions. [2022-07-21 08:09:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:09:54,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-07-21 08:09:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:54,228 INFO L225 Difference]: With dead ends: 3887 [2022-07-21 08:09:54,228 INFO L226 Difference]: Without dead ends: 1607 [2022-07-21 08:09:54,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:09:54,242 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 2559 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:54,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 2191 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:09:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-07-21 08:09:54,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1483. [2022-07-21 08:09:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1173 states have (on average 1.3529411764705883) internal successors, (1587), 1197 states have internal predecessors, (1587), 170 states have call successors, (170), 109 states have call predecessors, (170), 138 states have return successors, (221), 179 states have call predecessors, (221), 168 states have call successors, (221) [2022-07-21 08:09:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1978 transitions. [2022-07-21 08:09:54,323 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1978 transitions. Word has length 66 [2022-07-21 08:09:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1978 transitions. [2022-07-21 08:09:54,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-21 08:09:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1978 transitions. [2022-07-21 08:09:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:09:54,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:54,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:09:54,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1975322897, now seen corresponding path program 1 times [2022-07-21 08:09:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446763239] [2022-07-21 08:09:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:09:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:09:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446763239] [2022-07-21 08:09:54,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446763239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:54,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:54,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:09:54,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717199382] [2022-07-21 08:09:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:09:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:09:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:09:54,527 INFO L87 Difference]: Start difference. First operand 1483 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:09:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:55,338 INFO L93 Difference]: Finished difference Result 2925 states and 3915 transitions. [2022-07-21 08:09:55,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:09:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-21 08:09:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:55,347 INFO L225 Difference]: With dead ends: 2925 [2022-07-21 08:09:55,347 INFO L226 Difference]: Without dead ends: 1629 [2022-07-21 08:09:55,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:09:55,353 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 340 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:55,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1812 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:09:55,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-21 08:09:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1523. [2022-07-21 08:09:55,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1205 states have (on average 1.3385892116182572) internal successors, (1613), 1229 states have internal predecessors, (1613), 170 states have call successors, (170), 109 states have call predecessors, (170), 146 states have return successors, (229), 187 states have call predecessors, (229), 168 states have call successors, (229) [2022-07-21 08:09:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2012 transitions. [2022-07-21 08:09:55,429 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2012 transitions. Word has length 91 [2022-07-21 08:09:55,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2012 transitions. [2022-07-21 08:09:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:09:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2012 transitions. [2022-07-21 08:09:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:09:55,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:55,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:55,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:09:55,434 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1531422223, now seen corresponding path program 1 times [2022-07-21 08:09:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316100567] [2022-07-21 08:09:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:55,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:09:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:09:55,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:55,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316100567] [2022-07-21 08:09:55,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316100567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:55,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:55,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:09:55,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275206844] [2022-07-21 08:09:55,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:55,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:09:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:55,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:09:55,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:09:55,547 INFO L87 Difference]: Start difference. First operand 1523 states and 2012 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:09:56,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:56,331 INFO L93 Difference]: Finished difference Result 3315 states and 4378 transitions. [2022-07-21 08:09:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:09:56,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-21 08:09:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:56,344 INFO L225 Difference]: With dead ends: 3315 [2022-07-21 08:09:56,344 INFO L226 Difference]: Without dead ends: 2053 [2022-07-21 08:09:56,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:09:56,349 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 786 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:56,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1362 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:09:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-07-21 08:09:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1877. [2022-07-21 08:09:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1512 states have internal predecessors, (1950), 210 states have call successors, (210), 139 states have call predecessors, (210), 178 states have return successors, (270), 228 states have call predecessors, (270), 208 states have call successors, (270) [2022-07-21 08:09:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2430 transitions. [2022-07-21 08:09:56,467 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2430 transitions. Word has length 91 [2022-07-21 08:09:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:56,468 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 2430 transitions. [2022-07-21 08:09:56,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:09:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2430 transitions. [2022-07-21 08:09:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:09:56,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:56,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:09:56,473 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1546940941, now seen corresponding path program 1 times [2022-07-21 08:09:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:56,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508481694] [2022-07-21 08:09:56,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:56,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:09:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:09:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:56,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508481694] [2022-07-21 08:09:56,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508481694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:56,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:56,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:09:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969032816] [2022-07-21 08:09:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:56,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:09:56,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:09:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:09:56,584 INFO L87 Difference]: Start difference. First operand 1877 states and 2430 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-21 08:09:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:57,385 INFO L93 Difference]: Finished difference Result 3404 states and 4394 transitions. [2022-07-21 08:09:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:09:57,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-07-21 08:09:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:57,395 INFO L225 Difference]: With dead ends: 3404 [2022-07-21 08:09:57,396 INFO L226 Difference]: Without dead ends: 1951 [2022-07-21 08:09:57,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-21 08:09:57,403 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 836 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:57,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1505 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:09:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-07-21 08:09:57,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1656. [2022-07-21 08:09:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.3131159969673996) internal successors, (1732), 1339 states have internal predecessors, (1732), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-21 08:09:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2144 transitions. [2022-07-21 08:09:57,487 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2144 transitions. Word has length 91 [2022-07-21 08:09:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:57,487 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2144 transitions. [2022-07-21 08:09:57,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-21 08:09:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2144 transitions. [2022-07-21 08:09:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:09:57,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:57,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:57,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:09:57,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash 392221105, now seen corresponding path program 1 times [2022-07-21 08:09:57,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636519770] [2022-07-21 08:09:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:09:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:09:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:57,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636519770] [2022-07-21 08:09:57,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636519770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:57,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:57,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:57,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166612341] [2022-07-21 08:09:57,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:57,577 INFO L87 Difference]: Start difference. First operand 1656 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:09:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:58,051 INFO L93 Difference]: Finished difference Result 4808 states and 6256 transitions. [2022-07-21 08:09:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:09:58,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-21 08:09:58,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:58,070 INFO L225 Difference]: With dead ends: 4808 [2022-07-21 08:09:58,070 INFO L226 Difference]: Without dead ends: 3339 [2022-07-21 08:09:58,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:09:58,078 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1137 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:58,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 862 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:09:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-07-21 08:09:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3125. [2022-07-21 08:09:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2468 states have (on average 1.280388978930308) internal successors, (3160), 2517 states have internal predecessors, (3160), 343 states have call successors, (343), 233 states have call predecessors, (343), 312 states have return successors, (513), 377 states have call predecessors, (513), 341 states have call successors, (513) [2022-07-21 08:09:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4016 transitions. [2022-07-21 08:09:58,244 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4016 transitions. Word has length 91 [2022-07-21 08:09:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:58,245 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4016 transitions. [2022-07-21 08:09:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:09:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4016 transitions. [2022-07-21 08:09:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:09:58,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:58,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:58,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:09:58,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash -665616973, now seen corresponding path program 1 times [2022-07-21 08:09:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:58,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20169800] [2022-07-21 08:09:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:09:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:09:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:58,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20169800] [2022-07-21 08:09:58,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20169800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:58,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:58,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:09:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946167657] [2022-07-21 08:09:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:09:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:09:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:09:58,325 INFO L87 Difference]: Start difference. First operand 3125 states and 4016 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:09:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:58,748 INFO L93 Difference]: Finished difference Result 4709 states and 6000 transitions. [2022-07-21 08:09:58,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:09:58,749 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-21 08:09:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:58,789 INFO L225 Difference]: With dead ends: 4709 [2022-07-21 08:09:58,789 INFO L226 Difference]: Without dead ends: 1771 [2022-07-21 08:09:58,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:09:58,797 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 458 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:58,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1070 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:09:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-07-21 08:09:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1656. [2022-07-21 08:09:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.2850644427596665) internal successors, (1695), 1339 states have internal predecessors, (1695), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-21 08:09:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2107 transitions. [2022-07-21 08:09:58,869 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2107 transitions. Word has length 91 [2022-07-21 08:09:58,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:58,869 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2107 transitions. [2022-07-21 08:09:58,869 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:09:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2107 transitions. [2022-07-21 08:09:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 08:09:58,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:58,871 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 08:09:58,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:09:58,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:58,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1134197990, now seen corresponding path program 1 times [2022-07-21 08:09:58,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:58,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089721383] [2022-07-21 08:09:58,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:58,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:09:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:09:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:09:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:09:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:09:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:09:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:09:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:09:58,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089721383] [2022-07-21 08:09:58,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089721383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:58,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:58,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:09:58,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218933392] [2022-07-21 08:09:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:09:58,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:09:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:09:58,973 INFO L87 Difference]: Start difference. First operand 1656 states and 2107 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) [2022-07-21 08:10:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:00,130 INFO L93 Difference]: Finished difference Result 4074 states and 5190 transitions. [2022-07-21 08:10:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:10:00,130 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 92 [2022-07-21 08:10:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:00,141 INFO L225 Difference]: With dead ends: 4074 [2022-07-21 08:10:00,142 INFO L226 Difference]: Without dead ends: 2454 [2022-07-21 08:10:00,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:10:00,148 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1715 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:00,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1369 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:00,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-07-21 08:10:00,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2277. [2022-07-21 08:10:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2525195968645018) internal successors, (2237), 1814 states have internal predecessors, (2237), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-21 08:10:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2857 transitions. [2022-07-21 08:10:00,263 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2857 transitions. Word has length 92 [2022-07-21 08:10:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:00,265 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2857 transitions. [2022-07-21 08:10:00,265 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) [2022-07-21 08:10:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2857 transitions. [2022-07-21 08:10:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:00,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:00,267 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] [2022-07-21 08:10:00,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:10:00,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:00,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:00,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1197403432, now seen corresponding path program 1 times [2022-07-21 08:10:00,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:00,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957522360] [2022-07-21 08:10:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:00,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:00,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:00,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957522360] [2022-07-21 08:10:00,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957522360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:00,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:00,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:10:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237691866] [2022-07-21 08:10:00,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:00,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:10:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:00,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:10:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:10:00,344 INFO L87 Difference]: Start difference. First operand 2277 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:00,963 INFO L93 Difference]: Finished difference Result 2498 states and 3201 transitions. [2022-07-21 08:10:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:10:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:00,975 INFO L225 Difference]: With dead ends: 2498 [2022-07-21 08:10:00,976 INFO L226 Difference]: Without dead ends: 2331 [2022-07-21 08:10:00,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:00,979 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 536 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:00,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 806 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:10:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2022-07-21 08:10:01,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2277. [2022-07-21 08:10:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2519596864501679) internal successors, (2236), 1814 states have internal predecessors, (2236), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-21 08:10:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2856 transitions. [2022-07-21 08:10:01,117 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2856 transitions. Word has length 90 [2022-07-21 08:10:01,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:01,117 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2856 transitions. [2022-07-21 08:10:01,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:01,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2856 transitions. [2022-07-21 08:10:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:01,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:01,119 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] [2022-07-21 08:10:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:10:01,119 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash 358369770, now seen corresponding path program 1 times [2022-07-21 08:10:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580363069] [2022-07-21 08:10:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:01,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:01,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:01,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:01,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580363069] [2022-07-21 08:10:01,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580363069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:01,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:01,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708703082] [2022-07-21 08:10:01,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:01,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:01,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:01,200 INFO L87 Difference]: Start difference. First operand 2277 states and 2856 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:02,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:02,261 INFO L93 Difference]: Finished difference Result 2717 states and 3543 transitions. [2022-07-21 08:10:02,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:10:02,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:02,273 INFO L225 Difference]: With dead ends: 2717 [2022-07-21 08:10:02,273 INFO L226 Difference]: Without dead ends: 2552 [2022-07-21 08:10:02,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:02,276 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 871 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:02,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1059 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-07-21 08:10:02,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2445. [2022-07-21 08:10:02,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 1934 states have (on average 1.2740434332988624) internal successors, (2464), 1963 states have internal predecessors, (2464), 272 states have call successors, (272), 174 states have call predecessors, (272), 237 states have return successors, (377), 309 states have call predecessors, (377), 270 states have call successors, (377) [2022-07-21 08:10:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 3113 transitions. [2022-07-21 08:10:02,418 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 3113 transitions. Word has length 90 [2022-07-21 08:10:02,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:02,418 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 3113 transitions. [2022-07-21 08:10:02,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 3113 transitions. [2022-07-21 08:10:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:02,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:02,421 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] [2022-07-21 08:10:02,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:10:02,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash -816289682, now seen corresponding path program 1 times [2022-07-21 08:10:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:02,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114873923] [2022-07-21 08:10:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:02,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114873923] [2022-07-21 08:10:02,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114873923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:02,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:02,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:02,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492718387] [2022-07-21 08:10:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:02,520 INFO L87 Difference]: Start difference. First operand 2445 states and 3113 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:03,901 INFO L93 Difference]: Finished difference Result 3110 states and 4145 transitions. [2022-07-21 08:10:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:03,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:03,911 INFO L225 Difference]: With dead ends: 3110 [2022-07-21 08:10:03,911 INFO L226 Difference]: Without dead ends: 2777 [2022-07-21 08:10:03,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:03,914 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 868 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:03,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1652 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:10:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-07-21 08:10:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2602. [2022-07-21 08:10:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2071 states have (on average 1.2892322549492998) internal successors, (2670), 2101 states have internal predecessors, (2670), 285 states have call successors, (285), 180 states have call predecessors, (285), 244 states have return successors, (392), 323 states have call predecessors, (392), 283 states have call successors, (392) [2022-07-21 08:10:04,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3347 transitions. [2022-07-21 08:10:04,044 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3347 transitions. Word has length 90 [2022-07-21 08:10:04,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:04,044 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 3347 transitions. [2022-07-21 08:10:04,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3347 transitions. [2022-07-21 08:10:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:04,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:04,046 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] [2022-07-21 08:10:04,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:10:04,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash 70933164, now seen corresponding path program 1 times [2022-07-21 08:10:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633492738] [2022-07-21 08:10:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:04,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:04,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633492738] [2022-07-21 08:10:04,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633492738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:04,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:04,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:04,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131868452] [2022-07-21 08:10:04,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:04,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:04,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:04,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:04,143 INFO L87 Difference]: Start difference. First operand 2602 states and 3347 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:05,444 INFO L93 Difference]: Finished difference Result 3688 states and 5027 transitions. [2022-07-21 08:10:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:05,460 INFO L225 Difference]: With dead ends: 3688 [2022-07-21 08:10:05,461 INFO L226 Difference]: Without dead ends: 3198 [2022-07-21 08:10:05,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:05,466 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 865 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:05,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1644 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-07-21 08:10:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2917. [2022-07-21 08:10:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2346 states have (on average 1.314151747655584) internal successors, (3083), 2378 states have internal predecessors, (3083), 311 states have call successors, (311), 192 states have call predecessors, (311), 258 states have return successors, (426), 351 states have call predecessors, (426), 309 states have call successors, (426) [2022-07-21 08:10:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3820 transitions. [2022-07-21 08:10:05,635 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3820 transitions. Word has length 90 [2022-07-21 08:10:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:05,636 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3820 transitions. [2022-07-21 08:10:05,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3820 transitions. [2022-07-21 08:10:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:05,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:05,638 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] [2022-07-21 08:10:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:10:05,638 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:05,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1840109394, now seen corresponding path program 1 times [2022-07-21 08:10:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:05,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534312522] [2022-07-21 08:10:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:05,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:05,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:05,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534312522] [2022-07-21 08:10:05,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534312522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:05,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:05,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:05,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746848590] [2022-07-21 08:10:05,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:05,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:05,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:05,730 INFO L87 Difference]: Start difference. First operand 2917 states and 3820 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:07,114 INFO L93 Difference]: Finished difference Result 4803 states and 6724 transitions. [2022-07-21 08:10:07,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:07,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:07,129 INFO L225 Difference]: With dead ends: 4803 [2022-07-21 08:10:07,129 INFO L226 Difference]: Without dead ends: 3998 [2022-07-21 08:10:07,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:07,134 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 861 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:07,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1640 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-07-21 08:10:07,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3548. [2022-07-21 08:10:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2897 states have (on average 1.349326889886089) internal successors, (3909), 2933 states have internal predecessors, (3909), 363 states have call successors, (363), 216 states have call predecessors, (363), 286 states have return successors, (500), 407 states have call predecessors, (500), 361 states have call successors, (500) [2022-07-21 08:10:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4772 transitions. [2022-07-21 08:10:07,349 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4772 transitions. Word has length 90 [2022-07-21 08:10:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:07,349 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4772 transitions. [2022-07-21 08:10:07,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4772 transitions. [2022-07-21 08:10:07,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:07,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:07,352 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] [2022-07-21 08:10:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:10:07,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:07,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:07,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1763208596, now seen corresponding path program 1 times [2022-07-21 08:10:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343059062] [2022-07-21 08:10:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:07,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343059062] [2022-07-21 08:10:07,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343059062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:07,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:07,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:07,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132590577] [2022-07-21 08:10:07,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:07,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:07,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:07,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:07,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:07,437 INFO L87 Difference]: Start difference. First operand 3548 states and 4772 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:08,795 INFO L93 Difference]: Finished difference Result 7032 states and 10134 transitions. [2022-07-21 08:10:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:08,795 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:08,814 INFO L225 Difference]: With dead ends: 7032 [2022-07-21 08:10:08,814 INFO L226 Difference]: Without dead ends: 5596 [2022-07-21 08:10:08,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:08,821 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 911 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:08,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1261 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2022-07-21 08:10:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 4815. [2022-07-21 08:10:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4004 states have (on average 1.3903596403596403) internal successors, (5567), 4048 states have internal predecessors, (5567), 467 states have call successors, (467), 264 states have call predecessors, (467), 342 states have return successors, (666), 519 states have call predecessors, (666), 465 states have call successors, (666) [2022-07-21 08:10:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6700 transitions. [2022-07-21 08:10:09,118 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6700 transitions. Word has length 90 [2022-07-21 08:10:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:09,119 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 6700 transitions. [2022-07-21 08:10:09,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6700 transitions. [2022-07-21 08:10:09,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:09,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:09,122 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] [2022-07-21 08:10:09,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:10:09,123 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1564408046, now seen corresponding path program 1 times [2022-07-21 08:10:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:09,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259903492] [2022-07-21 08:10:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:09,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:09,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259903492] [2022-07-21 08:10:09,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259903492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:09,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:09,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503367956] [2022-07-21 08:10:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:09,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:09,203 INFO L87 Difference]: Start difference. First operand 4815 states and 6700 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:10,934 INFO L93 Difference]: Finished difference Result 12322 states and 18250 transitions. [2022-07-21 08:10:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:10,967 INFO L225 Difference]: With dead ends: 12322 [2022-07-21 08:10:10,967 INFO L226 Difference]: Without dead ends: 9619 [2022-07-21 08:10:10,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:10,978 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 989 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:10,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1612 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2022-07-21 08:10:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 7251. [2022-07-21 08:10:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 6136 states have (on average 1.430084745762712) internal successors, (8775), 6196 states have internal predecessors, (8775), 659 states have call successors, (659), 360 states have call predecessors, (659), 454 states have return successors, (1036), 727 states have call predecessors, (1036), 657 states have call successors, (1036) [2022-07-21 08:10:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 10470 transitions. [2022-07-21 08:10:11,427 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 10470 transitions. Word has length 90 [2022-07-21 08:10:11,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:11,428 INFO L495 AbstractCegarLoop]: Abstraction has 7251 states and 10470 transitions. [2022-07-21 08:10:11,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 10470 transitions. [2022-07-21 08:10:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:11,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:11,434 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] [2022-07-21 08:10:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:10:11,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1071781872, now seen corresponding path program 1 times [2022-07-21 08:10:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:11,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359445021] [2022-07-21 08:10:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:11,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:11,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359445021] [2022-07-21 08:10:11,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359445021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:11,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:11,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728769600] [2022-07-21 08:10:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:11,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:11,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:11,513 INFO L87 Difference]: Start difference. First operand 7251 states and 10470 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:13,752 INFO L93 Difference]: Finished difference Result 21288 states and 32222 transitions. [2022-07-21 08:10:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:13,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:13,818 INFO L225 Difference]: With dead ends: 21288 [2022-07-21 08:10:13,819 INFO L226 Difference]: Without dead ends: 16149 [2022-07-21 08:10:13,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:13,840 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 877 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:13,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1655 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:10:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16149 states. [2022-07-21 08:10:14,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16149 to 12184. [2022-07-21 08:10:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 10477 states have (on average 1.46310966879832) internal successors, (15329), 10569 states have internal predecessors, (15329), 1027 states have call successors, (1027), 552 states have call predecessors, (1027), 678 states have return successors, (1922), 1127 states have call predecessors, (1922), 1025 states have call successors, (1922) [2022-07-21 08:10:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 18278 transitions. [2022-07-21 08:10:14,585 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 18278 transitions. Word has length 90 [2022-07-21 08:10:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:14,586 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 18278 transitions. [2022-07-21 08:10:14,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 18278 transitions. [2022-07-21 08:10:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:14,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:14,595 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] [2022-07-21 08:10:14,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:10:14,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2025722030, now seen corresponding path program 1 times [2022-07-21 08:10:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248805529] [2022-07-21 08:10:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:14,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:14,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248805529] [2022-07-21 08:10:14,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248805529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:14,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:14,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:14,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876803251] [2022-07-21 08:10:14,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:14,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:14,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:14,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:14,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:14,663 INFO L87 Difference]: Start difference. First operand 12184 states and 18278 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:17,306 INFO L93 Difference]: Finished difference Result 38835 states and 60220 transitions. [2022-07-21 08:10:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:17,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:17,421 INFO L225 Difference]: With dead ends: 38835 [2022-07-21 08:10:17,421 INFO L226 Difference]: Without dead ends: 28763 [2022-07-21 08:10:17,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:17,461 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 910 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:17,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1606 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:17,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2022-07-21 08:10:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 22017. [2022-07-21 08:10:18,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22017 states, 19158 states have (on average 1.485906670842468) internal successors, (28467), 19314 states have internal predecessors, (28467), 1731 states have call successors, (1731), 936 states have call predecessors, (1731), 1126 states have return successors, (4148), 1895 states have call predecessors, (4148), 1729 states have call successors, (4148) [2022-07-21 08:10:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22017 states to 22017 states and 34346 transitions. [2022-07-21 08:10:18,706 INFO L78 Accepts]: Start accepts. Automaton has 22017 states and 34346 transitions. Word has length 90 [2022-07-21 08:10:18,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:18,707 INFO L495 AbstractCegarLoop]: Abstraction has 22017 states and 34346 transitions. [2022-07-21 08:10:18,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 22017 states and 34346 transitions. [2022-07-21 08:10:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:18,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:18,824 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] [2022-07-21 08:10:18,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:10:18,824 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:18,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:18,825 INFO L85 PathProgramCache]: Analyzing trace with hash 809568304, now seen corresponding path program 1 times [2022-07-21 08:10:18,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:18,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466003103] [2022-07-21 08:10:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:18,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:18,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:18,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466003103] [2022-07-21 08:10:18,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466003103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:18,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:18,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947669059] [2022-07-21 08:10:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:18,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:18,890 INFO L87 Difference]: Start difference. First operand 22017 states and 34346 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:22,614 INFO L93 Difference]: Finished difference Result 72746 states and 116274 transitions. [2022-07-21 08:10:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:22,844 INFO L225 Difference]: With dead ends: 72746 [2022-07-21 08:10:22,844 INFO L226 Difference]: Without dead ends: 52841 [2022-07-21 08:10:22,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:22,903 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 870 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:22,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1602 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52841 states. [2022-07-21 08:10:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52841 to 41618. [2022-07-21 08:10:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41618 states, 36519 states have (on average 1.50072564966182) internal successors, (54805), 36803 states have internal predecessors, (54805), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-21 08:10:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41618 states to 41618 states and 67874 transitions. [2022-07-21 08:10:25,671 INFO L78 Accepts]: Start accepts. Automaton has 41618 states and 67874 transitions. Word has length 90 [2022-07-21 08:10:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:25,671 INFO L495 AbstractCegarLoop]: Abstraction has 41618 states and 67874 transitions. [2022-07-21 08:10:25,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41618 states and 67874 transitions. [2022-07-21 08:10:25,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:25,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:25,707 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] [2022-07-21 08:10:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:10:25,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 77600878, now seen corresponding path program 1 times [2022-07-21 08:10:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131954286] [2022-07-21 08:10:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:25,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:25,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131954286] [2022-07-21 08:10:25,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131954286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:25,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:25,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940953037] [2022-07-21 08:10:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:25,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:25,796 INFO L87 Difference]: Start difference. First operand 41618 states and 67874 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:31,454 INFO L93 Difference]: Finished difference Result 110455 states and 176651 transitions. [2022-07-21 08:10:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:10:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:31,733 INFO L225 Difference]: With dead ends: 110455 [2022-07-21 08:10:31,734 INFO L226 Difference]: Without dead ends: 70950 [2022-07-21 08:10:31,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:10:31,993 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 564 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:31,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1346 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:10:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70950 states. [2022-07-21 08:10:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70950 to 42389. [2022-07-21 08:10:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42389 states, 37290 states have (on average 1.4903727540895682) internal successors, (55576), 37574 states have internal predecessors, (55576), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-21 08:10:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 68645 transitions. [2022-07-21 08:10:34,967 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 68645 transitions. Word has length 90 [2022-07-21 08:10:34,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:34,968 INFO L495 AbstractCegarLoop]: Abstraction has 42389 states and 68645 transitions. [2022-07-21 08:10:34,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 68645 transitions. [2022-07-21 08:10:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 08:10:35,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:35,001 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] [2022-07-21 08:10:35,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:10:35,002 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1338518128, now seen corresponding path program 1 times [2022-07-21 08:10:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:35,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245471691] [2022-07-21 08:10:35,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245471691] [2022-07-21 08:10:35,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245471691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:35,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865580262] [2022-07-21 08:10:35,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:35,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:35,100 INFO L87 Difference]: Start difference. First operand 42389 states and 68645 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:45,372 INFO L93 Difference]: Finished difference Result 182432 states and 299479 transitions. [2022-07-21 08:10:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:10:45,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-21 08:10:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:45,914 INFO L225 Difference]: With dead ends: 182432 [2022-07-21 08:10:45,914 INFO L226 Difference]: Without dead ends: 142156 [2022-07-21 08:10:46,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:10:46,066 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2045 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:46,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1487 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:10:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142156 states. [2022-07-21 08:10:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142156 to 117987. [2022-07-21 08:10:53,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117987 states, 103678 states have (on average 1.4900846852755647) internal successors, (154489), 104861 states have internal predecessors, (154489), 8683 states have call successors, (8683), 4794 states have call predecessors, (8683), 5624 states have return successors, (28611), 8588 states have call predecessors, (28611), 8681 states have call successors, (28611) [2022-07-21 08:10:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117987 states to 117987 states and 191783 transitions. [2022-07-21 08:10:53,978 INFO L78 Accepts]: Start accepts. Automaton has 117987 states and 191783 transitions. Word has length 90 [2022-07-21 08:10:53,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:53,978 INFO L495 AbstractCegarLoop]: Abstraction has 117987 states and 191783 transitions. [2022-07-21 08:10:53,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:53,978 INFO L276 IsEmpty]: Start isEmpty. Operand 117987 states and 191783 transitions. [2022-07-21 08:10:54,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 08:10:54,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:54,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 08:10:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:10:54,570 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 291045078, now seen corresponding path program 1 times [2022-07-21 08:10:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273010565] [2022-07-21 08:10:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:54,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 08:10:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:10:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 08:10:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:10:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 08:10:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:10:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:10:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 08:10:54,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273010565] [2022-07-21 08:10:54,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273010565] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:10:54,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288010709] [2022-07-21 08:10:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:10:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:10:54,686 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) [2022-07-21 08:10:54,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:10:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:10:54,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:10:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:10:54,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:10:54,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288010709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:54,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:10:54,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 08:10:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411692208] [2022-07-21 08:10:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:54,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:10:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:10:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:54,883 INFO L87 Difference]: Start difference. First operand 117987 states and 191783 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)