./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+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 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:07:25,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:07:25,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:07:25,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:07:25,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:07:25,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:07:25,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:07:25,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:07:25,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:07:25,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:07:25,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:07:25,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:07:25,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:07:25,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:07:25,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:07:25,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:07:25,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:07:25,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:07:25,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:07:25,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:07:25,538 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:07:25,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:07:25,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:07:25,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:07:25,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:07:25,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:07:25,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:07:25,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:07:25,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:07:25,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:07:25,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:07:25,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:07:25,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:07:25,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:07:25,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:07:25,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:07:25,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:07:25,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:07:25,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:07:25,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:07:25,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:07:25,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:07:25,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:07:25,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:07:25,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:07:25,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:07:25,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:07:25,577 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:07:25,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:07:25,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:07:25,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:07:25,577 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:07:25,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:07:25,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:07:25,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:07:25,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:07:25,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:07:25,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 [2022-07-13 21:07:25,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:07:25,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:07:25,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:07:25,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:07:25,780 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:07:25,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-07-13 21:07:25,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0920682e8/7c7dded48a0d4d4eb88d37fc39fd4ea9/FLAGc81e310cc [2022-07-13 21:07:26,201 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:07:26,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-07-13 21:07:26,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0920682e8/7c7dded48a0d4d4eb88d37fc39fd4ea9/FLAGc81e310cc [2022-07-13 21:07:26,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0920682e8/7c7dded48a0d4d4eb88d37fc39fd4ea9 [2022-07-13 21:07:26,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:07:26,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:07:26,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:07:26,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:07:26,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:07:26,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486455dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26, skipping insertion in model container [2022-07-13 21:07:26,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:07:26,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:07:26,415 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_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-07-13 21:07:26,468 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_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-07-13 21:07:26,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:07:26,528 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:07:26,538 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_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-07-13 21:07:26,556 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_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-07-13 21:07:26,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:07:26,614 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:07:26,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26 WrapperNode [2022-07-13 21:07:26,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:07:26,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:07:26,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:07:26,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:07:26,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,650 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 591 [2022-07-13 21:07:26,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:07:26,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:07:26,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:07:26,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:07:26,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:07:26,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:07:26,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:07:26,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:07:26,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (1/1) ... [2022-07-13 21:07:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:07:26,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:26,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:07:26,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:07:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:07:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:07:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:07:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:07:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:07:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:07:26,773 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:07:26,773 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:07:26,878 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:07:26,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:07:27,402 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:07:27,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:07:27,412 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-13 21:07:27,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:07:27 BoogieIcfgContainer [2022-07-13 21:07:27,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:07:27,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:07:27,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:07:27,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:07:27,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:07:26" (1/3) ... [2022-07-13 21:07:27,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130142a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:07:27, skipping insertion in model container [2022-07-13 21:07:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:07:26" (2/3) ... [2022-07-13 21:07:27,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2130142a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:07:27, skipping insertion in model container [2022-07-13 21:07:27,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:07:27" (3/3) ... [2022-07-13 21:07:27,421 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-07-13 21:07:27,430 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:07:27,431 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:07:27,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:07:27,476 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@40f34311, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13bfc70f [2022-07-13 21:07:27,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:07:27,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-13 21:07:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 21:07:27,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:27,502 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] [2022-07-13 21:07:27,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:27,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash -633619078, now seen corresponding path program 1 times [2022-07-13 21:07:27,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:27,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267227055] [2022-07-13 21:07:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:27,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:27,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 21:07:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267227055] [2022-07-13 21:07:27,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267227055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:27,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:27,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:07:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247977770] [2022-07-13 21:07:27,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:27,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:27,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:27,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:07:27,759 INFO L87 Difference]: Start difference. First operand has 254 states, 218 states have (on average 1.5963302752293578) internal successors, (348), 223 states have internal predecessors, (348), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:27,994 INFO L93 Difference]: Finished difference Result 561 states and 876 transitions. [2022-07-13 21:07:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:07:27,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-13 21:07:27,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:28,005 INFO L225 Difference]: With dead ends: 561 [2022-07-13 21:07:28,007 INFO L226 Difference]: Without dead ends: 314 [2022-07-13 21:07:28,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:28,018 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 464 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:28,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 648 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-13 21:07:28,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2022-07-13 21:07:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 267 states have (on average 1.4644194756554307) internal successors, (391), 271 states have internal predecessors, (391), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2022-07-13 21:07:28,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 451 transitions. [2022-07-13 21:07:28,099 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 451 transitions. Word has length 44 [2022-07-13 21:07:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:28,100 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 451 transitions. [2022-07-13 21:07:28,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 451 transitions. [2022-07-13 21:07:28,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:07:28,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:28,102 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] [2022-07-13 21:07:28,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:07:28,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:28,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1748999333, now seen corresponding path program 1 times [2022-07-13 21:07:28,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:28,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363156135] [2022-07-13 21:07:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:07:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:28,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363156135] [2022-07-13 21:07:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363156135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:28,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:28,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:07:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839248770] [2022-07-13 21:07:28,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:28,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:28,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:07:28,187 INFO L87 Difference]: Start difference. First operand 308 states and 451 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:28,402 INFO L93 Difference]: Finished difference Result 556 states and 791 transitions. [2022-07-13 21:07:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:07:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:07:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:28,414 INFO L225 Difference]: With dead ends: 556 [2022-07-13 21:07:28,414 INFO L226 Difference]: Without dead ends: 432 [2022-07-13 21:07:28,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:28,418 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 208 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:28,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 808 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:07:28,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-13 21:07:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 375. [2022-07-13 21:07:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 328 states have (on average 1.4481707317073171) internal successors, (475), 332 states have internal predecessors, (475), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2022-07-13 21:07:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 541 transitions. [2022-07-13 21:07:28,458 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 541 transitions. Word has length 45 [2022-07-13 21:07:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:28,459 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 541 transitions. [2022-07-13 21:07:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 541 transitions. [2022-07-13 21:07:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:07:28,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:28,467 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] [2022-07-13 21:07:28,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:07:28,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1261610502, now seen corresponding path program 1 times [2022-07-13 21:07:28,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:28,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642156389] [2022-07-13 21:07:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:28,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:07:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:28,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:28,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642156389] [2022-07-13 21:07:28,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642156389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:28,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:28,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:07:28,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309466969] [2022-07-13 21:07:28,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:28,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:28,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:28,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:28,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:07:28,526 INFO L87 Difference]: Start difference. First operand 375 states and 541 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:28,646 INFO L93 Difference]: Finished difference Result 783 states and 1100 transitions. [2022-07-13 21:07:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:07:28,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:07:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:28,650 INFO L225 Difference]: With dead ends: 783 [2022-07-13 21:07:28,650 INFO L226 Difference]: Without dead ends: 592 [2022-07-13 21:07:28,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:28,657 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 473 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:28,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 642 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:28,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-07-13 21:07:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 540. [2022-07-13 21:07:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 474 states have (on average 1.4029535864978904) internal successors, (665), 481 states have internal predecessors, (665), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-13 21:07:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 759 transitions. [2022-07-13 21:07:28,685 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 759 transitions. Word has length 45 [2022-07-13 21:07:28,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:28,685 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 759 transitions. [2022-07-13 21:07:28,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:07:28,685 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 759 transitions. [2022-07-13 21:07:28,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 21:07:28,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:28,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:07:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:07:28,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:28,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:28,689 INFO L85 PathProgramCache]: Analyzing trace with hash 315009802, now seen corresponding path program 1 times [2022-07-13 21:07:28,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:28,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512886053] [2022-07-13 21:07:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:28,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:07:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:07:28,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:28,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512886053] [2022-07-13 21:07:28,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512886053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:28,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:28,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:07:28,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001856258] [2022-07-13 21:07:28,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:28,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:28,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:28,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:07:28,809 INFO L87 Difference]: Start difference. First operand 540 states and 759 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:07:29,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:29,021 INFO L93 Difference]: Finished difference Result 1124 states and 1544 transitions. [2022-07-13 21:07:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:07:29,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-13 21:07:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:29,025 INFO L225 Difference]: With dead ends: 1124 [2022-07-13 21:07:29,025 INFO L226 Difference]: Without dead ends: 768 [2022-07-13 21:07:29,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:29,027 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 192 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:29,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 863 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:07:29,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-07-13 21:07:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 730. [2022-07-13 21:07:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 640 states have (on average 1.3515625) internal successors, (865), 649 states have internal predecessors, (865), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2022-07-13 21:07:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 997 transitions. [2022-07-13 21:07:29,053 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 997 transitions. Word has length 62 [2022-07-13 21:07:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:29,054 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 997 transitions. [2022-07-13 21:07:29,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:07:29,054 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 997 transitions. [2022-07-13 21:07:29,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 21:07:29,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:29,057 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:07:29,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:07:29,058 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2001152359, now seen corresponding path program 1 times [2022-07-13 21:07:29,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:29,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560798042] [2022-07-13 21:07:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:29,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:07:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:07:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 21:07:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:29,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560798042] [2022-07-13 21:07:29,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560798042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:29,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:29,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:07:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512390670] [2022-07-13 21:07:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:07:29,119 INFO L87 Difference]: Start difference. First operand 730 states and 997 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:07:29,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:29,221 INFO L93 Difference]: Finished difference Result 1383 states and 1850 transitions. [2022-07-13 21:07:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:07:29,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-13 21:07:29,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:29,226 INFO L225 Difference]: With dead ends: 1383 [2022-07-13 21:07:29,226 INFO L226 Difference]: Without dead ends: 929 [2022-07-13 21:07:29,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:29,229 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 460 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:29,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 639 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:29,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-13 21:07:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 874. [2022-07-13 21:07:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 768 states have (on average 1.3229166666666667) internal successors, (1016), 779 states have internal predecessors, (1016), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2022-07-13 21:07:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1170 transitions. [2022-07-13 21:07:29,263 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1170 transitions. Word has length 67 [2022-07-13 21:07:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:29,263 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1170 transitions. [2022-07-13 21:07:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:07:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1170 transitions. [2022-07-13 21:07:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 21:07:29,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:29,265 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:07:29,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:07:29,266 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash -454264156, now seen corresponding path program 1 times [2022-07-13 21:07:29,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:29,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210688450] [2022-07-13 21:07:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:29,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:07:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:07:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:07:29,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210688450] [2022-07-13 21:07:29,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210688450] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013321697] [2022-07-13 21:07:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:29,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:29,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:07:29,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:07:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:29,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 21:07:29,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:07:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:29,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:07:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:07:29,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013321697] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:29,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 21:07:29,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-13 21:07:29,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5143922] [2022-07-13 21:07:29,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:29,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:07:29,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:29,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:07:29,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:07:29,636 INFO L87 Difference]: Start difference. First operand 874 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:07:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:29,760 INFO L93 Difference]: Finished difference Result 930 states and 1238 transitions. [2022-07-13 21:07:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:07:29,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-13 21:07:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:29,764 INFO L225 Difference]: With dead ends: 930 [2022-07-13 21:07:29,764 INFO L226 Difference]: Without dead ends: 927 [2022-07-13 21:07:29,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:07:29,770 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 635 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:29,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 452 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-07-13 21:07:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 873. [2022-07-13 21:07:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 768 states have (on average 1.3203125) internal successors, (1014), 778 states have internal predecessors, (1014), 63 states have call successors, (63), 35 states have call predecessors, (63), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2022-07-13 21:07:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1167 transitions. [2022-07-13 21:07:29,808 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1167 transitions. Word has length 68 [2022-07-13 21:07:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:29,809 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1167 transitions. [2022-07-13 21:07:29,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:07:29,809 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1167 transitions. [2022-07-13 21:07:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 21:07:29,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:29,811 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:07:29,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:07:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 21:07:30,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1198093110, now seen corresponding path program 1 times [2022-07-13 21:07:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754162803] [2022-07-13 21:07:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:07:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:30,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:07:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:07:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754162803] [2022-07-13 21:07:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754162803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:30,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505315863] [2022-07-13 21:07:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:30,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:07:30,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:07:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:30,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:07:30,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:07:30,403 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:30,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:07:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:07:30,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505315863] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:07:30,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:07:30,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-13 21:07:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771244649] [2022-07-13 21:07:30,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:07:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:07:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:07:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:07:30,474 INFO L87 Difference]: Start difference. First operand 873 states and 1167 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:07:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:31,340 INFO L93 Difference]: Finished difference Result 2573 states and 3387 transitions. [2022-07-13 21:07:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 21:07:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-13 21:07:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:31,348 INFO L225 Difference]: With dead ends: 2573 [2022-07-13 21:07:31,348 INFO L226 Difference]: Without dead ends: 2029 [2022-07-13 21:07:31,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 21:07:31,351 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 827 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:31,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2581 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:07:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-07-13 21:07:31,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1262. [2022-07-13 21:07:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1118 states have (on average 1.295169946332737) internal successors, (1448), 1136 states have internal predecessors, (1448), 83 states have call successors, (83), 49 states have call predecessors, (83), 59 states have return successors, (124), 77 states have call predecessors, (124), 82 states have call successors, (124) [2022-07-13 21:07:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1655 transitions. [2022-07-13 21:07:31,413 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1655 transitions. Word has length 69 [2022-07-13 21:07:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:31,414 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1655 transitions. [2022-07-13 21:07:31,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:07:31,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1655 transitions. [2022-07-13 21:07:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 21:07:31,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:31,417 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 21:07:31,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:07:31,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-13 21:07:31,637 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:31,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:31,637 INFO L85 PathProgramCache]: Analyzing trace with hash -888130838, now seen corresponding path program 1 times [2022-07-13 21:07:31,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:31,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476460711] [2022-07-13 21:07:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:31,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:07:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:07:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:07:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,710 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 21:07:31,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:31,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476460711] [2022-07-13 21:07:31,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476460711] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:31,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498771722] [2022-07-13 21:07:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:31,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:31,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:31,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:07:31,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:07:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:31,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:07:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:07:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:07:31,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:07:31,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498771722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:31,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:07:31,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:07:31,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874064757] [2022-07-13 21:07:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:31,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:07:31,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:07:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:31,811 INFO L87 Difference]: Start difference. First operand 1262 states and 1655 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:07:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:31,849 INFO L93 Difference]: Finished difference Result 1985 states and 2593 transitions. [2022-07-13 21:07:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:07:31,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-13 21:07:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:31,853 INFO L225 Difference]: With dead ends: 1985 [2022-07-13 21:07:31,854 INFO L226 Difference]: Without dead ends: 1140 [2022-07-13 21:07:31,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:31,856 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 320 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:31,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 466 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:07:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-07-13 21:07:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1125. [2022-07-13 21:07:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 997 states have (on average 1.2938816449348045) internal successors, (1290), 1014 states have internal predecessors, (1290), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2022-07-13 21:07:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1475 transitions. [2022-07-13 21:07:31,893 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1475 transitions. Word has length 88 [2022-07-13 21:07:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:31,893 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1475 transitions. [2022-07-13 21:07:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:07:31,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1475 transitions. [2022-07-13 21:07:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:31,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:31,895 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] [2022-07-13 21:07:31,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 21:07:32,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:32,128 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -422269311, now seen corresponding path program 1 times [2022-07-13 21:07:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:32,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988567478] [2022-07-13 21:07:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:32,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988567478] [2022-07-13 21:07:32,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988567478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:32,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:32,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:07:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491461791] [2022-07-13 21:07:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:07:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:07:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:07:32,196 INFO L87 Difference]: Start difference. First operand 1125 states and 1475 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) [2022-07-13 21:07:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:32,578 INFO L93 Difference]: Finished difference Result 1346 states and 1819 transitions. [2022-07-13 21:07:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:07:32,578 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 [2022-07-13 21:07:32,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:32,582 INFO L225 Difference]: With dead ends: 1346 [2022-07-13 21:07:32,582 INFO L226 Difference]: Without dead ends: 1179 [2022-07-13 21:07:32,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:07:32,584 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 484 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:32,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 724 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:07:32,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-07-13 21:07:32,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1125. [2022-07-13 21:07:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 997 states have (on average 1.2928786359077231) internal successors, (1289), 1014 states have internal predecessors, (1289), 75 states have call successors, (75), 43 states have call predecessors, (75), 51 states have return successors, (110), 68 states have call predecessors, (110), 74 states have call successors, (110) [2022-07-13 21:07:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1474 transitions. [2022-07-13 21:07:32,629 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1474 transitions. Word has length 90 [2022-07-13 21:07:32,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:32,630 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1474 transitions. [2022-07-13 21:07:32,630 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) [2022-07-13 21:07:32,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1474 transitions. [2022-07-13 21:07:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:32,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:32,632 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] [2022-07-13 21:07:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:07:32,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1261302973, now seen corresponding path program 1 times [2022-07-13 21:07:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:32,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46263830] [2022-07-13 21:07:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:32,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:32,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46263830] [2022-07-13 21:07:32,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46263830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:32,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:32,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:07:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791105649] [2022-07-13 21:07:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:32,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:07:32,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:32,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:07:32,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:07:32,691 INFO L87 Difference]: Start difference. First operand 1125 states and 1474 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) [2022-07-13 21:07:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:33,433 INFO L93 Difference]: Finished difference Result 1565 states and 2161 transitions. [2022-07-13 21:07:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:07:33,433 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 [2022-07-13 21:07:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:33,438 INFO L225 Difference]: With dead ends: 1565 [2022-07-13 21:07:33,439 INFO L226 Difference]: Without dead ends: 1400 [2022-07-13 21:07:33,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:07:33,441 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 777 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:33,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 994 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:07:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-07-13 21:07:33,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1293. [2022-07-13 21:07:33,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1145 states have (on average 1.3248908296943231) internal successors, (1517), 1163 states have internal predecessors, (1517), 88 states have call successors, (88), 49 states have call predecessors, (88), 58 states have return successors, (126), 81 states have call predecessors, (126), 87 states have call successors, (126) [2022-07-13 21:07:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1731 transitions. [2022-07-13 21:07:33,498 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1731 transitions. Word has length 90 [2022-07-13 21:07:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:33,499 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1731 transitions. [2022-07-13 21:07:33,499 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) [2022-07-13 21:07:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1731 transitions. [2022-07-13 21:07:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:33,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:33,501 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] [2022-07-13 21:07:33,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:07:33,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1859004871, now seen corresponding path program 1 times [2022-07-13 21:07:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:33,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370178028] [2022-07-13 21:07:33,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:33,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370178028] [2022-07-13 21:07:33,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370178028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:33,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:33,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78607553] [2022-07-13 21:07:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:33,589 INFO L87 Difference]: Start difference. First operand 1293 states and 1731 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) [2022-07-13 21:07:34,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:34,709 INFO L93 Difference]: Finished difference Result 1958 states and 2763 transitions. [2022-07-13 21:07:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:07:34,709 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 [2022-07-13 21:07:34,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:34,715 INFO L225 Difference]: With dead ends: 1958 [2022-07-13 21:07:34,715 INFO L226 Difference]: Without dead ends: 1625 [2022-07-13 21:07:34,716 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 [2022-07-13 21:07:34,717 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 779 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:34,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1578 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:07:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-07-13 21:07:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1450. [2022-07-13 21:07:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1282 states have (on average 1.34399375975039) internal successors, (1723), 1301 states have internal predecessors, (1723), 101 states have call successors, (101), 55 states have call predecessors, (101), 65 states have return successors, (141), 95 states have call predecessors, (141), 100 states have call successors, (141) [2022-07-13 21:07:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1965 transitions. [2022-07-13 21:07:34,790 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1965 transitions. Word has length 90 [2022-07-13 21:07:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:34,791 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1965 transitions. [2022-07-13 21:07:34,791 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) [2022-07-13 21:07:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1965 transitions. [2022-07-13 21:07:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:34,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:34,794 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] [2022-07-13 21:07:34,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:07:34,794 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:34,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:34,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1548739579, now seen corresponding path program 1 times [2022-07-13 21:07:34,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:34,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427914777] [2022-07-13 21:07:34,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:34,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:34,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:34,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427914777] [2022-07-13 21:07:34,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427914777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:34,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:34,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845711876] [2022-07-13 21:07:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:34,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:34,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:34,858 INFO L87 Difference]: Start difference. First operand 1450 states and 1965 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) [2022-07-13 21:07:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:35,863 INFO L93 Difference]: Finished difference Result 2535 states and 3645 transitions. [2022-07-13 21:07:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:07:35,864 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 [2022-07-13 21:07:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:35,870 INFO L225 Difference]: With dead ends: 2535 [2022-07-13 21:07:35,871 INFO L226 Difference]: Without dead ends: 2045 [2022-07-13 21:07:35,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:07:35,873 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 773 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:35,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1566 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:07:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-07-13 21:07:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1768. [2022-07-13 21:07:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1560 states have (on average 1.373076923076923) internal successors, (2142), 1581 states have internal predecessors, (2142), 127 states have call successors, (127), 67 states have call predecessors, (127), 79 states have return successors, (175), 123 states have call predecessors, (175), 126 states have call successors, (175) [2022-07-13 21:07:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2444 transitions. [2022-07-13 21:07:35,946 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2444 transitions. Word has length 90 [2022-07-13 21:07:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:35,947 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2444 transitions. [2022-07-13 21:07:35,947 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) [2022-07-13 21:07:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2444 transitions. [2022-07-13 21:07:35,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:35,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:35,949 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] [2022-07-13 21:07:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:07:35,950 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:35,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:35,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1471838781, now seen corresponding path program 1 times [2022-07-13 21:07:35,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:35,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844386607] [2022-07-13 21:07:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:35,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:35,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:35,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:36,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:36,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844386607] [2022-07-13 21:07:36,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844386607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:36,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:36,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899768478] [2022-07-13 21:07:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:36,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:36,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:36,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:36,022 INFO L87 Difference]: Start difference. First operand 1768 states and 2444 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) [2022-07-13 21:07:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:37,028 INFO L93 Difference]: Finished difference Result 3655 states and 5352 transitions. [2022-07-13 21:07:37,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:07:37,029 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 [2022-07-13 21:07:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:37,039 INFO L225 Difference]: With dead ends: 3655 [2022-07-13 21:07:37,040 INFO L226 Difference]: Without dead ends: 2847 [2022-07-13 21:07:37,043 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 [2022-07-13 21:07:37,043 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 772 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:37,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1561 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:07:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-07-13 21:07:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2405. [2022-07-13 21:07:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2117 states have (on average 1.4076523382144543) internal successors, (2980), 2142 states have internal predecessors, (2980), 179 states have call successors, (179), 91 states have call predecessors, (179), 107 states have return successors, (249), 179 states have call predecessors, (249), 178 states have call successors, (249) [2022-07-13 21:07:37,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3408 transitions. [2022-07-13 21:07:37,167 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3408 transitions. Word has length 90 [2022-07-13 21:07:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:37,167 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 3408 transitions. [2022-07-13 21:07:37,168 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) [2022-07-13 21:07:37,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3408 transitions. [2022-07-13 21:07:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:37,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:37,171 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] [2022-07-13 21:07:37,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:07:37,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:37,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1855777861, now seen corresponding path program 1 times [2022-07-13 21:07:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:37,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288494892] [2022-07-13 21:07:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:37,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288494892] [2022-07-13 21:07:37,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288494892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:37,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:37,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:37,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118138249] [2022-07-13 21:07:37,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:37,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:37,244 INFO L87 Difference]: Start difference. First operand 2405 states and 3408 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) [2022-07-13 21:07:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:37,778 INFO L93 Difference]: Finished difference Result 4291 states and 6337 transitions. [2022-07-13 21:07:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:07:37,779 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 [2022-07-13 21:07:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:37,788 INFO L225 Difference]: With dead ends: 4291 [2022-07-13 21:07:37,788 INFO L226 Difference]: Without dead ends: 2846 [2022-07-13 21:07:37,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:07:37,792 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 724 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:37,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 817 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:07:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-13 21:07:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2405. [2022-07-13 21:07:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2117 states have (on average 1.4034010392064242) internal successors, (2971), 2142 states have internal predecessors, (2971), 179 states have call successors, (179), 91 states have call predecessors, (179), 107 states have return successors, (249), 179 states have call predecessors, (249), 178 states have call successors, (249) [2022-07-13 21:07:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 3399 transitions. [2022-07-13 21:07:37,909 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 3399 transitions. Word has length 90 [2022-07-13 21:07:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:37,909 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 3399 transitions. [2022-07-13 21:07:37,909 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) [2022-07-13 21:07:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 3399 transitions. [2022-07-13 21:07:37,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:37,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:37,912 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] [2022-07-13 21:07:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:07:37,913 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:37,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash -530731645, now seen corresponding path program 1 times [2022-07-13 21:07:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:37,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485239364] [2022-07-13 21:07:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:37,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:37,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485239364] [2022-07-13 21:07:37,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485239364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:37,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:37,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:37,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743603080] [2022-07-13 21:07:37,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:37,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:37,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:37,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:37,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:37,977 INFO L87 Difference]: Start difference. First operand 2405 states and 3399 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) [2022-07-13 21:07:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:39,172 INFO L93 Difference]: Finished difference Result 6308 states and 9352 transitions. [2022-07-13 21:07:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:07:39,173 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 [2022-07-13 21:07:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:39,190 INFO L225 Difference]: With dead ends: 6308 [2022-07-13 21:07:39,190 INFO L226 Difference]: Without dead ends: 4863 [2022-07-13 21:07:39,197 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 [2022-07-13 21:07:39,198 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 898 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:39,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1536 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:07:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2022-07-13 21:07:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 3631. [2022-07-13 21:07:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3191 states have (on average 1.4349733625822627) internal successors, (4579), 3224 states have internal predecessors, (4579), 275 states have call successors, (275), 139 states have call predecessors, (275), 163 states have return successors, (407), 283 states have call predecessors, (407), 274 states have call successors, (407) [2022-07-13 21:07:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 5261 transitions. [2022-07-13 21:07:39,382 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 5261 transitions. Word has length 90 [2022-07-13 21:07:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:39,383 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 5261 transitions. [2022-07-13 21:07:39,383 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) [2022-07-13 21:07:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 5261 transitions. [2022-07-13 21:07:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:39,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:39,386 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] [2022-07-13 21:07:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:07:39,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:39,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1023357819, now seen corresponding path program 1 times [2022-07-13 21:07:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:39,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844720372] [2022-07-13 21:07:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844720372] [2022-07-13 21:07:39,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844720372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:39,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:39,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806987216] [2022-07-13 21:07:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:39,452 INFO L87 Difference]: Start difference. First operand 3631 states and 5261 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) [2022-07-13 21:07:40,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:40,852 INFO L93 Difference]: Finished difference Result 10812 states and 16236 transitions. [2022-07-13 21:07:40,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:07:40,853 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 [2022-07-13 21:07:40,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:40,877 INFO L225 Difference]: With dead ends: 10812 [2022-07-13 21:07:40,877 INFO L226 Difference]: Without dead ends: 8141 [2022-07-13 21:07:40,885 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 [2022-07-13 21:07:40,886 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 786 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:40,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1579 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:07:40,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8141 states. [2022-07-13 21:07:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8141 to 6112. [2022-07-13 21:07:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 5376 states have (on average 1.4622395833333333) internal successors, (7861), 5425 states have internal predecessors, (7861), 459 states have call successors, (459), 235 states have call predecessors, (459), 275 states have return successors, (769), 483 states have call predecessors, (769), 458 states have call successors, (769) [2022-07-13 21:07:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 9089 transitions. [2022-07-13 21:07:41,238 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 9089 transitions. Word has length 90 [2022-07-13 21:07:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:41,238 INFO L495 AbstractCegarLoop]: Abstraction has 6112 states and 9089 transitions. [2022-07-13 21:07:41,239 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) [2022-07-13 21:07:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 9089 transitions. [2022-07-13 21:07:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:41,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:41,244 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] [2022-07-13 21:07:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:07:41,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -69417661, now seen corresponding path program 1 times [2022-07-13 21:07:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305087225] [2022-07-13 21:07:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:41,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305087225] [2022-07-13 21:07:41,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305087225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:41,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:41,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:41,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435899508] [2022-07-13 21:07:41,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:41,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:41,305 INFO L87 Difference]: Start difference. First operand 6112 states and 9089 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) [2022-07-13 21:07:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:42,972 INFO L93 Difference]: Finished difference Result 19627 states and 29922 transitions. [2022-07-13 21:07:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:07:42,972 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 [2022-07-13 21:07:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:43,022 INFO L225 Difference]: With dead ends: 19627 [2022-07-13 21:07:43,022 INFO L226 Difference]: Without dead ends: 14475 [2022-07-13 21:07:43,041 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 [2022-07-13 21:07:43,041 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 819 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:43,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1530 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:07:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14475 states. [2022-07-13 21:07:43,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14475 to 11057. [2022-07-13 21:07:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11057 states, 9745 states have (on average 1.4816829143150334) internal successors, (14439), 9826 states have internal predecessors, (14439), 811 states have call successors, (811), 427 states have call predecessors, (811), 499 states have return successors, (1639), 867 states have call predecessors, (1639), 810 states have call successors, (1639) [2022-07-13 21:07:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11057 states to 11057 states and 16889 transitions. [2022-07-13 21:07:43,679 INFO L78 Accepts]: Start accepts. Automaton has 11057 states and 16889 transitions. Word has length 90 [2022-07-13 21:07:43,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:43,679 INFO L495 AbstractCegarLoop]: Abstraction has 11057 states and 16889 transitions. [2022-07-13 21:07:43,679 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) [2022-07-13 21:07:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11057 states and 16889 transitions. [2022-07-13 21:07:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:43,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:43,688 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] [2022-07-13 21:07:43,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:07:43,688 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1285571387, now seen corresponding path program 1 times [2022-07-13 21:07:43,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429895819] [2022-07-13 21:07:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:43,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:43,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429895819] [2022-07-13 21:07:43,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429895819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:43,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:43,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:07:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677897630] [2022-07-13 21:07:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:43,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:07:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:07:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:43,750 INFO L87 Difference]: Start difference. First operand 11057 states and 16889 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) [2022-07-13 21:07:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:46,094 INFO L93 Difference]: Finished difference Result 36666 states and 57000 transitions. [2022-07-13 21:07:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:07:46,095 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 [2022-07-13 21:07:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:46,189 INFO L225 Difference]: With dead ends: 36666 [2022-07-13 21:07:46,189 INFO L226 Difference]: Without dead ends: 26569 [2022-07-13 21:07:46,280 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 [2022-07-13 21:07:46,280 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 764 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:46,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1538 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:07:46,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26569 states. [2022-07-13 21:07:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26569 to 20914. [2022-07-13 21:07:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20914 states, 18482 states have (on average 1.4946975435558922) internal successors, (27625), 18627 states have internal predecessors, (27625), 1483 states have call successors, (1483), 811 states have call predecessors, (1483), 947 states have return successors, (3833), 1603 states have call predecessors, (3833), 1482 states have call successors, (3833) [2022-07-13 21:07:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20914 states to 20914 states and 32941 transitions. [2022-07-13 21:07:47,354 INFO L78 Accepts]: Start accepts. Automaton has 20914 states and 32941 transitions. Word has length 90 [2022-07-13 21:07:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:47,355 INFO L495 AbstractCegarLoop]: Abstraction has 20914 states and 32941 transitions. [2022-07-13 21:07:47,355 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) [2022-07-13 21:07:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20914 states and 32941 transitions. [2022-07-13 21:07:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:07:47,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:47,371 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] [2022-07-13 21:07:47,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:07:47,371 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:47,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2017538813, now seen corresponding path program 1 times [2022-07-13 21:07:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:47,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698473714] [2022-07-13 21:07:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:47,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:07:47,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698473714] [2022-07-13 21:07:47,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698473714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:47,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:47,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:07:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962357856] [2022-07-13 21:07:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:07:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:07:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:07:47,425 INFO L87 Difference]: Start difference. First operand 20914 states and 32941 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) [2022-07-13 21:07:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:50,429 INFO L93 Difference]: Finished difference Result 57719 states and 90746 transitions. [2022-07-13 21:07:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:07:50,429 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 [2022-07-13 21:07:50,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:50,543 INFO L225 Difference]: With dead ends: 57719 [2022-07-13 21:07:50,544 INFO L226 Difference]: Without dead ends: 37766 [2022-07-13 21:07:50,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:07:50,585 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 957 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1303 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:07:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37766 states. [2022-07-13 21:07:52,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37766 to 30835. [2022-07-13 21:07:52,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30835 states, 27199 states have (on average 1.4872973271076142) internal successors, (40453), 27473 states have internal predecessors, (40453), 2233 states have call successors, (2233), 1201 states have call predecessors, (2233), 1401 states have return successors, (5313), 2288 states have call predecessors, (5313), 2232 states have call successors, (5313) [2022-07-13 21:07:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30835 states to 30835 states and 47999 transitions. [2022-07-13 21:07:52,150 INFO L78 Accepts]: Start accepts. Automaton has 30835 states and 47999 transitions. Word has length 90 [2022-07-13 21:07:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:52,151 INFO L495 AbstractCegarLoop]: Abstraction has 30835 states and 47999 transitions. [2022-07-13 21:07:52,151 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) [2022-07-13 21:07:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 30835 states and 47999 transitions. [2022-07-13 21:07:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 21:07:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:52,182 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:07:52,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:07:52,182 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:52,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:52,183 INFO L85 PathProgramCache]: Analyzing trace with hash 220614803, now seen corresponding path program 1 times [2022-07-13 21:07:52,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:52,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717194275] [2022-07-13 21:07:52,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:52,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:07:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:07:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:07:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 21:07:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:07:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 21:07:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:52,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717194275] [2022-07-13 21:07:52,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717194275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:52,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945771662] [2022-07-13 21:07:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:52,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:52,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:52,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:07:52,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 21:07:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:52,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:07:52,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:07:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:07:52,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:07:52,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945771662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:52,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:07:52,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:07:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902356298] [2022-07-13 21:07:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:07:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:07:52,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:52,344 INFO L87 Difference]: Start difference. First operand 30835 states and 47999 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:07:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:53,544 INFO L93 Difference]: Finished difference Result 31214 states and 48467 transitions. [2022-07-13 21:07:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:07:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-13 21:07:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:53,632 INFO L225 Difference]: With dead ends: 31214 [2022-07-13 21:07:53,632 INFO L226 Difference]: Without dead ends: 29888 [2022-07-13 21:07:53,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:07:53,650 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 62 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:53,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 736 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:07:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29888 states. [2022-07-13 21:07:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29888 to 29888. [2022-07-13 21:07:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29888 states, 26355 states have (on average 1.4947827736672359) internal successors, (39395), 26613 states have internal predecessors, (39395), 2176 states have call successors, (2176), 1164 states have call predecessors, (2176), 1356 states have return successors, (5221), 2238 states have call predecessors, (5221), 2176 states have call successors, (5221) [2022-07-13 21:07:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29888 states to 29888 states and 46792 transitions. [2022-07-13 21:07:55,344 INFO L78 Accepts]: Start accepts. Automaton has 29888 states and 46792 transitions. Word has length 103 [2022-07-13 21:07:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:55,344 INFO L495 AbstractCegarLoop]: Abstraction has 29888 states and 46792 transitions. [2022-07-13 21:07:55,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:07:55,344 INFO L276 IsEmpty]: Start isEmpty. Operand 29888 states and 46792 transitions. [2022-07-13 21:07:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 21:07:55,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:55,401 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] [2022-07-13 21:07:55,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 21:07:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:55,615 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1933035341, now seen corresponding path program 1 times [2022-07-13 21:07:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:55,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293488704] [2022-07-13 21:07:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:55,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:07:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:07:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:07:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:07:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:07:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 21:07:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:07:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:07:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 21:07:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:55,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293488704] [2022-07-13 21:07:55,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293488704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:07:55,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910933449] [2022-07-13 21:07:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:55,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:07:55,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:07:55,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:07:55,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 21:07:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:55,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:07:55,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:07:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 21:07:55,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:07:55,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910933449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:55,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:07:55,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:07:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660698635] [2022-07-13 21:07:55,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:55,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:07:55,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:07:55,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:07:55,851 INFO L87 Difference]: Start difference. First operand 29888 states and 46792 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) [2022-07-13 21:07:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:58,530 INFO L93 Difference]: Finished difference Result 88953 states and 140142 transitions. [2022-07-13 21:07:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:07:58,531 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 146 [2022-07-13 21:07:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:58,733 INFO L225 Difference]: With dead ends: 88953 [2022-07-13 21:07:58,733 INFO L226 Difference]: Without dead ends: 59079 [2022-07-13 21:07:58,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:07:58,810 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 209 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:58,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 511 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:07:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59079 states. [2022-07-13 21:08:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59079 to 58689. [2022-07-13 21:08:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58689 states, 51726 states have (on average 1.4928662568147546) internal successors, (77220), 52241 states have internal predecessors, (77220), 4250 states have call successors, (4250), 2328 states have call predecessors, (4250), 2712 states have return successors, (10213), 4247 states have call predecessors, (10213), 4250 states have call successors, (10213) [2022-07-13 21:08:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58689 states to 58689 states and 91683 transitions. [2022-07-13 21:08:02,134 INFO L78 Accepts]: Start accepts. Automaton has 58689 states and 91683 transitions. Word has length 146 [2022-07-13 21:08:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:02,134 INFO L495 AbstractCegarLoop]: Abstraction has 58689 states and 91683 transitions. [2022-07-13 21:08:02,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-13 21:08:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 58689 states and 91683 transitions. [2022-07-13 21:08:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 21:08:02,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:02,222 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] [2022-07-13 21:08:02,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 21:08:02,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:02,617 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1942347923, now seen corresponding path program 1 times [2022-07-13 21:08:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:02,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769690153] [2022-07-13 21:08:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:08:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:08:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:08:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:08:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 21:08:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:08:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:08:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 21:08:02,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769690153] [2022-07-13 21:08:02,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769690153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167766284] [2022-07-13 21:08:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:02,712 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:02,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 21:08:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:02,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:08:02,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 21:08:02,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:02,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167766284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:02,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:02,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:08:02,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120709767] [2022-07-13 21:08:02,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:02,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:02,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:02,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:02,847 INFO L87 Difference]: Start difference. First operand 58689 states and 91683 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:08:07,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:07,776 INFO L93 Difference]: Finished difference Result 174674 states and 274653 transitions. [2022-07-13 21:08:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:08:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2022-07-13 21:08:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:08,209 INFO L225 Difference]: With dead ends: 174674 [2022-07-13 21:08:08,210 INFO L226 Difference]: Without dead ends: 115999 [2022-07-13 21:08:08,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:08,555 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 221 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:08,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 511 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:08:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115999 states. [2022-07-13 21:08:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115999 to 115221. [2022-07-13 21:08:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115221 states, 101496 states have (on average 1.490856782533302) internal successors, (151316), 102525 states have internal predecessors, (151316), 8300 states have call successors, (8300), 4656 states have call predecessors, (8300), 5424 states have return successors, (20099), 8167 states have call predecessors, (20099), 8300 states have call successors, (20099) [2022-07-13 21:08:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115221 states to 115221 states and 179715 transitions. [2022-07-13 21:08:15,167 INFO L78 Accepts]: Start accepts. Automaton has 115221 states and 179715 transitions. Word has length 146 [2022-07-13 21:08:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:15,167 INFO L495 AbstractCegarLoop]: Abstraction has 115221 states and 179715 transitions. [2022-07-13 21:08:15,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:08:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 115221 states and 179715 transitions. [2022-07-13 21:08:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 21:08:15,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:15,331 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] [2022-07-13 21:08:15,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:15,548 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:15,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 215566221, now seen corresponding path program 1 times [2022-07-13 21:08:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534719699] [2022-07-13 21:08:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:08:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:08:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:08:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:08:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 21:08:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:08:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:08:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 21:08:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:15,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534719699] [2022-07-13 21:08:15,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534719699] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:15,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822839276] [2022-07-13 21:08:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:15,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:15,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:15,655 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:15,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 21:08:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:08:15,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-13 21:08:15,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:15,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822839276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:15,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:15,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 21:08:15,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400378985] [2022-07-13 21:08:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:15,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:15,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:15,763 INFO L87 Difference]: Start difference. First operand 115221 states and 179715 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)