./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.05.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 b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:43:41,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:43:41,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:43:41,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:43:41,567 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:43:41,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:43:41,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:43:41,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:43:41,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:43:41,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:43:41,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:43:41,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:43:41,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:43:41,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:43:41,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:43:41,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:43:41,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:43:41,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:43:41,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:43:41,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:43:41,601 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:43:41,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:43:41,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:43:41,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:43:41,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:43:41,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:43:41,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:43:41,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:43:41,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:43:41,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:43:41,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:43:41,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:43:41,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:43:41,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:43:41,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:43:41,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:43:41,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:43:41,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:43:41,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:43:41,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:43:41,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:43:41,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:43:41,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:43:41,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:43:41,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:43:41,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:43:41,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:43:41,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:43:41,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:43:41,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:43:41,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:43:41,657 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:43:41,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:43:41,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:43:41,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:43:41,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:43:41,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:43:41,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:43:41,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:43:41,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:43:41,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:43:41,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:43:41,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:43:41,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:43:41,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:43:41,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:43:41,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:43:41,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:43:41,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:43:41,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:43:41,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:43:41,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:43:41,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:43:41,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:43:41,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:43:41,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:43:41,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 [2022-07-22 20:43:41,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:43:41,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:43:41,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:43:41,917 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:43:41,918 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:43:41,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-07-22 20:43:41,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d073b61df/5fc59421dd3e4a3a922cc61f579f727a/FLAGc72e4a68e [2022-07-22 20:43:42,424 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:43:42,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-07-22 20:43:42,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d073b61df/5fc59421dd3e4a3a922cc61f579f727a/FLAGc72e4a68e [2022-07-22 20:43:42,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d073b61df/5fc59421dd3e4a3a922cc61f579f727a [2022-07-22 20:43:42,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:43:42,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:43:42,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:43:42,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:43:42,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:43:42,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:43:42" (1/1) ... [2022-07-22 20:43:42,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516f4cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:42, skipping insertion in model container [2022-07-22 20:43:42,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:43:42" (1/1) ... [2022-07-22 20:43:42,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:43:43,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:43:43,145 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.05.cil-1.c[913,926] [2022-07-22 20:43:43,189 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.05.cil-1.c[5977,5990] [2022-07-22 20:43:43,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:43:43,242 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:43:43,251 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.05.cil-1.c[913,926] [2022-07-22 20:43:43,267 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.05.cil-1.c[5977,5990] [2022-07-22 20:43:43,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:43:43,320 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:43:43,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43 WrapperNode [2022-07-22 20:43:43,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:43:43,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:43:43,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:43:43,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:43:43,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,382 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 649 [2022-07-22 20:43:43,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:43:43,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:43:43,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:43:43,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:43:43,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:43:43,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:43:43,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:43:43,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:43:43,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (1/1) ... [2022-07-22 20:43:43,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:43:43,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:43:43,485 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) [2022-07-22 20:43:43,510 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 [2022-07-22 20:43:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:43:43,523 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:43:43,524 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:43:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-22 20:43:43,524 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-22 20:43:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:43:43,524 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:43:43,524 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:43:43,524 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:43:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:43:43,525 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:43:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:43:43,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:43:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:43:43,525 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:43:43,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:43:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:43:43,526 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:43:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:43:43,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:43:43,526 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:43:43,526 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:43:43,646 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:43:43,647 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:43:44,194 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:43:44,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:43:44,204 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-22 20:43:44,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:43:44 BoogieIcfgContainer [2022-07-22 20:43:44,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:43:44,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:43:44,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:43:44,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:43:44,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:43:42" (1/3) ... [2022-07-22 20:43:44,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451013f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:43:44, skipping insertion in model container [2022-07-22 20:43:44,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:43:43" (2/3) ... [2022-07-22 20:43:44,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451013f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:43:44, skipping insertion in model container [2022-07-22 20:43:44,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:43:44" (3/3) ... [2022-07-22 20:43:44,214 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2022-07-22 20:43:44,228 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:43:44,228 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:43:44,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:43:44,287 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@50fb15f1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b8ce983 [2022-07-22 20:43:44,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:43:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 20:43:44,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 20:43:44,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:44,303 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] [2022-07-22 20:43:44,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:44,308 INFO L85 PathProgramCache]: Analyzing trace with hash -196001466, now seen corresponding path program 1 times [2022-07-22 20:43:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:44,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382758303] [2022-07-22 20:43:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:44,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 20:43:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:44,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:44,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382758303] [2022-07-22 20:43:44,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382758303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:44,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:44,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:43:44,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171817103] [2022-07-22 20:43:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:44,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:44,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:44,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:43:44,631 INFO L87 Difference]: Start difference. First operand has 279 states, 242 states have (on average 1.6074380165289257) internal successors, (389), 247 states have internal predecessors, (389), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) 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) [2022-07-22 20:43:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:44,985 INFO L93 Difference]: Finished difference Result 610 states and 960 transitions. [2022-07-22 20:43:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:43:44,988 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 [2022-07-22 20:43:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:45,005 INFO L225 Difference]: With dead ends: 610 [2022-07-22 20:43:45,011 INFO L226 Difference]: Without dead ends: 339 [2022-07-22 20:43:45,018 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 [2022-07-22 20:43:45,022 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 524 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:45,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 707 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:43:45,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-07-22 20:43:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2022-07-22 20:43:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 291 states have (on average 1.47766323024055) internal successors, (430), 295 states have internal predecessors, (430), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2022-07-22 20:43:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 492 transitions. [2022-07-22 20:43:45,082 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 492 transitions. Word has length 44 [2022-07-22 20:43:45,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:45,082 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 492 transitions. [2022-07-22 20:43:45,082 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) [2022-07-22 20:43:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 492 transitions. [2022-07-22 20:43:45,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 20:43:45,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:45,086 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] [2022-07-22 20:43:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:43:45,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:45,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1414910090, now seen corresponding path program 1 times [2022-07-22 20:43:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:45,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501272088] [2022-07-22 20:43:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 20:43:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:45,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:45,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501272088] [2022-07-22 20:43:45,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501272088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:45,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:45,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:43:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706400549] [2022-07-22 20:43:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:43:45,162 INFO L87 Difference]: Start difference. First operand 333 states and 492 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) [2022-07-22 20:43:45,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:45,449 INFO L93 Difference]: Finished difference Result 581 states and 832 transitions. [2022-07-22 20:43:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:43:45,449 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 [2022-07-22 20:43:45,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:45,454 INFO L225 Difference]: With dead ends: 581 [2022-07-22 20:43:45,454 INFO L226 Difference]: Without dead ends: 457 [2022-07-22 20:43:45,455 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 [2022-07-22 20:43:45,456 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 228 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:45,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 888 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:43:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-22 20:43:45,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 400. [2022-07-22 20:43:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 352 states have (on average 1.4602272727272727) internal successors, (514), 356 states have internal predecessors, (514), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-07-22 20:43:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 582 transitions. [2022-07-22 20:43:45,522 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 582 transitions. Word has length 45 [2022-07-22 20:43:45,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:45,523 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 582 transitions. [2022-07-22 20:43:45,523 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) [2022-07-22 20:43:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 582 transitions. [2022-07-22 20:43:45,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 20:43:45,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:45,533 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] [2022-07-22 20:43:45,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:43:45,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:45,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:45,535 INFO L85 PathProgramCache]: Analyzing trace with hash 130552629, now seen corresponding path program 1 times [2022-07-22 20:43:45,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:45,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181897091] [2022-07-22 20:43:45,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:45,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 20:43:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:45,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181897091] [2022-07-22 20:43:45,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181897091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:45,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:45,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:43:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754067201] [2022-07-22 20:43:45,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:45,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:43:45,592 INFO L87 Difference]: Start difference. First operand 400 states and 582 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) [2022-07-22 20:43:45,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:45,741 INFO L93 Difference]: Finished difference Result 808 states and 1141 transitions. [2022-07-22 20:43:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:43:45,742 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 [2022-07-22 20:43:45,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:45,747 INFO L225 Difference]: With dead ends: 808 [2022-07-22 20:43:45,747 INFO L226 Difference]: Without dead ends: 617 [2022-07-22 20:43:45,752 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 [2022-07-22 20:43:45,755 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 533 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:45,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 702 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:43:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-22 20:43:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 565. [2022-07-22 20:43:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 498 states have (on average 1.4136546184738956) internal successors, (704), 505 states have internal predecessors, (704), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2022-07-22 20:43:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 800 transitions. [2022-07-22 20:43:45,815 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 800 transitions. Word has length 45 [2022-07-22 20:43:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:45,816 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 800 transitions. [2022-07-22 20:43:45,816 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) [2022-07-22 20:43:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 800 transitions. [2022-07-22 20:43:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 20:43:45,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:45,818 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] [2022-07-22 20:43:45,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:43:45,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1692231402, now seen corresponding path program 1 times [2022-07-22 20:43:45,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:45,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758642228] [2022-07-22 20:43:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:45,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 20:43:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:43:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:45,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:43:45,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:45,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758642228] [2022-07-22 20:43:45,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758642228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:45,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:45,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:43:45,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413709364] [2022-07-22 20:43:45,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:45,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:45,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:45,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:45,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:43:45,923 INFO L87 Difference]: Start difference. First operand 565 states and 800 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) [2022-07-22 20:43:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:46,199 INFO L93 Difference]: Finished difference Result 1149 states and 1585 transitions. [2022-07-22 20:43:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:43:46,200 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 [2022-07-22 20:43:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:46,206 INFO L225 Difference]: With dead ends: 1149 [2022-07-22 20:43:46,207 INFO L226 Difference]: Without dead ends: 793 [2022-07-22 20:43:46,208 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 [2022-07-22 20:43:46,217 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 212 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:46,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 943 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:43:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-07-22 20:43:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 755. [2022-07-22 20:43:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 664 states have (on average 1.3614457831325302) internal successors, (904), 673 states have internal predecessors, (904), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2022-07-22 20:43:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1038 transitions. [2022-07-22 20:43:46,260 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1038 transitions. Word has length 62 [2022-07-22 20:43:46,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:46,262 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1038 transitions. [2022-07-22 20:43:46,262 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) [2022-07-22 20:43:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1038 transitions. [2022-07-22 20:43:46,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:43:46,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:46,266 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] [2022-07-22 20:43:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:43:46,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 492946489, now seen corresponding path program 1 times [2022-07-22 20:43:46,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:46,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143730886] [2022-07-22 20:43:46,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:43:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:43:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 20:43:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:46,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143730886] [2022-07-22 20:43:46,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143730886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:46,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:46,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:43:46,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443475614] [2022-07-22 20:43:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:43:46,326 INFO L87 Difference]: Start difference. First operand 755 states and 1038 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) [2022-07-22 20:43:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:46,473 INFO L93 Difference]: Finished difference Result 1408 states and 1891 transitions. [2022-07-22 20:43:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:43:46,474 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 [2022-07-22 20:43:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:46,478 INFO L225 Difference]: With dead ends: 1408 [2022-07-22 20:43:46,479 INFO L226 Difference]: Without dead ends: 954 [2022-07-22 20:43:46,480 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 [2022-07-22 20:43:46,480 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 520 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:46,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 699 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:43:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-07-22 20:43:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 899. [2022-07-22 20:43:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 792 states have (on average 1.332070707070707) internal successors, (1055), 803 states have internal predecessors, (1055), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-07-22 20:43:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1211 transitions. [2022-07-22 20:43:46,518 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1211 transitions. Word has length 67 [2022-07-22 20:43:46,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:46,518 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1211 transitions. [2022-07-22 20:43:46,519 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) [2022-07-22 20:43:46,519 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1211 transitions. [2022-07-22 20:43:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:43:46,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:46,521 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] [2022-07-22 20:43:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:43:46,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1766542515, now seen corresponding path program 1 times [2022-07-22 20:43:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:46,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276670357] [2022-07-22 20:43:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:46,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:43:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:43:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:43:46,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:46,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276670357] [2022-07-22 20:43:46,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276670357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:43:46,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382545567] [2022-07-22 20:43:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:46,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:43:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:43:46,623 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) [2022-07-22 20:43:46,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:43:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:46,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 20:43:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:43:46,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:46,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:43:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:43:46,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382545567] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 20:43:46,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 20:43:46,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-22 20:43:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853519251] [2022-07-22 20:43:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:46,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:43:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:46,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:43:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:43:46,926 INFO L87 Difference]: Start difference. First operand 899 states and 1211 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) [2022-07-22 20:43:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:47,075 INFO L93 Difference]: Finished difference Result 955 states and 1279 transitions. [2022-07-22 20:43:47,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:43:47,076 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 [2022-07-22 20:43:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:47,081 INFO L225 Difference]: With dead ends: 955 [2022-07-22 20:43:47,081 INFO L226 Difference]: Without dead ends: 952 [2022-07-22 20:43:47,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:43:47,084 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 713 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:47,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 493 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:43:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-22 20:43:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 898. [2022-07-22 20:43:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 792 states have (on average 1.3295454545454546) internal successors, (1053), 802 states have internal predecessors, (1053), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2022-07-22 20:43:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1208 transitions. [2022-07-22 20:43:47,129 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1208 transitions. Word has length 68 [2022-07-22 20:43:47,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:47,130 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1208 transitions. [2022-07-22 20:43:47,130 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) [2022-07-22 20:43:47,130 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1208 transitions. [2022-07-22 20:43:47,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 20:43:47,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:47,133 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] [2022-07-22 20:43:47,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:43:47,356 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 [2022-07-22 20:43:47,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:47,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:47,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1072636420, now seen corresponding path program 1 times [2022-07-22 20:43:47,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:47,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158714271] [2022-07-22 20:43:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:47,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:43:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:43:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:43:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:47,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158714271] [2022-07-22 20:43:47,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158714271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:43:47,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847759553] [2022-07-22 20:43:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:47,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:43:47,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:43:47,461 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) [2022-07-22 20:43:47,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:43:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:47,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:43:47,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:43:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:47,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:43:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:43:47,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847759553] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:43:47,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:43:47,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-22 20:43:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364851226] [2022-07-22 20:43:47,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:43:47,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 20:43:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 20:43:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:43:47,881 INFO L87 Difference]: Start difference. First operand 898 states and 1208 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) [2022-07-22 20:43:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:49,124 INFO L93 Difference]: Finished difference Result 2598 states and 3428 transitions. [2022-07-22 20:43:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 20:43:49,125 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 [2022-07-22 20:43:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:49,133 INFO L225 Difference]: With dead ends: 2598 [2022-07-22 20:43:49,133 INFO L226 Difference]: Without dead ends: 2054 [2022-07-22 20:43:49,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 20:43:49,136 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 877 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:49,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2957 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:43:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-07-22 20:43:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1287. [2022-07-22 20:43:49,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1142 states have (on average 1.3021015761821366) internal successors, (1487), 1160 states have internal predecessors, (1487), 84 states have call successors, (84), 49 states have call predecessors, (84), 59 states have return successors, (125), 78 states have call predecessors, (125), 83 states have call successors, (125) [2022-07-22 20:43:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1696 transitions. [2022-07-22 20:43:49,227 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1696 transitions. Word has length 69 [2022-07-22 20:43:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:49,228 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1696 transitions. [2022-07-22 20:43:49,228 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) [2022-07-22 20:43:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1696 transitions. [2022-07-22 20:43:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 20:43:49,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:49,232 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] [2022-07-22 20:43:49,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:43:49,447 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 [2022-07-22 20:43:49,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash -357727812, now seen corresponding path program 1 times [2022-07-22 20:43:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:49,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375353223] [2022-07-22 20:43:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:43:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:43:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:43:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 20:43:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 20:43:49,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375353223] [2022-07-22 20:43:49,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375353223] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:43:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856826238] [2022-07-22 20:43:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:49,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:43:49,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:43:49,527 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) [2022-07-22 20:43:49,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:43:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:49,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:43:49,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:43:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:43:49,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:43:49,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856826238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:49,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:43:49,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 20:43:49,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235596000] [2022-07-22 20:43:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:49,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:43:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:43:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:49,663 INFO L87 Difference]: Start difference. First operand 1287 states and 1696 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) [2022-07-22 20:43:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:49,717 INFO L93 Difference]: Finished difference Result 2010 states and 2634 transitions. [2022-07-22 20:43:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:43:49,718 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 [2022-07-22 20:43:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:49,724 INFO L225 Difference]: With dead ends: 2010 [2022-07-22 20:43:49,724 INFO L226 Difference]: Without dead ends: 1165 [2022-07-22 20:43:49,726 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 [2022-07-22 20:43:49,727 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 361 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 507 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 [2022-07-22 20:43:49,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 507 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:43:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-07-22 20:43:49,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1150. [2022-07-22 20:43:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1021 states have (on average 1.3016650342801175) internal successors, (1329), 1038 states have internal predecessors, (1329), 76 states have call successors, (76), 43 states have call predecessors, (76), 51 states have return successors, (111), 69 states have call predecessors, (111), 75 states have call successors, (111) [2022-07-22 20:43:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1516 transitions. [2022-07-22 20:43:49,787 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1516 transitions. Word has length 88 [2022-07-22 20:43:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:49,787 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1516 transitions. [2022-07-22 20:43:49,787 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) [2022-07-22 20:43:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1516 transitions. [2022-07-22 20:43:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:49,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:49,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:49,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:43:50,007 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 [2022-07-22 20:43:50,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash -884291044, now seen corresponding path program 1 times [2022-07-22 20:43:50,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:50,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850503327] [2022-07-22 20:43:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:50,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850503327] [2022-07-22 20:43:50,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850503327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:50,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:50,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:43:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611602827] [2022-07-22 20:43:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:43:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:43:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:43:50,108 INFO L87 Difference]: Start difference. First operand 1150 states and 1516 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 20:43:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:51,289 INFO L93 Difference]: Finished difference Result 1662 states and 2323 transitions. [2022-07-22 20:43:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:43:51,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:51,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:51,296 INFO L225 Difference]: With dead ends: 1662 [2022-07-22 20:43:51,296 INFO L226 Difference]: Without dead ends: 1473 [2022-07-22 20:43:51,297 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 [2022-07-22 20:43:51,298 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 893 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:51,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1110 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:43:51,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-07-22 20:43:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1344. [2022-07-22 20:43:51,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1194 states have (on average 1.338358458961474) internal successors, (1598), 1212 states have internal predecessors, (1598), 90 states have call successors, (90), 49 states have call predecessors, (90), 58 states have return successors, (128), 83 states have call predecessors, (128), 89 states have call successors, (128) [2022-07-22 20:43:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 1816 transitions. [2022-07-22 20:43:51,393 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 1816 transitions. Word has length 101 [2022-07-22 20:43:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:51,394 INFO L495 AbstractCegarLoop]: Abstraction has 1344 states and 1816 transitions. [2022-07-22 20:43:51,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 20:43:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 1816 transitions. [2022-07-22 20:43:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:51,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:51,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:51,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:43:51,398 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1693791648, now seen corresponding path program 1 times [2022-07-22 20:43:51,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855099828] [2022-07-22 20:43:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855099828] [2022-07-22 20:43:51,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855099828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:51,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:51,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889526285] [2022-07-22 20:43:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:51,488 INFO L87 Difference]: Start difference. First operand 1344 states and 1816 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:52,986 INFO L93 Difference]: Finished difference Result 2120 states and 3034 transitions. [2022-07-22 20:43:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:43:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:52,994 INFO L225 Difference]: With dead ends: 2120 [2022-07-22 20:43:52,994 INFO L226 Difference]: Without dead ends: 1737 [2022-07-22 20:43:52,995 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 [2022-07-22 20:43:52,996 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 899 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:52,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1782 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:43:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-07-22 20:43:53,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1525. [2022-07-22 20:43:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3596750369276218) internal successors, (1841), 1373 states have internal predecessors, (1841), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-07-22 20:43:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2089 transitions. [2022-07-22 20:43:53,080 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2089 transitions. Word has length 101 [2022-07-22 20:43:53,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:53,081 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2089 transitions. [2022-07-22 20:43:53,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:53,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2089 transitions. [2022-07-22 20:43:53,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:53,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:53,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:53,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:43:53,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash -185339298, now seen corresponding path program 1 times [2022-07-22 20:43:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:53,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664117946] [2022-07-22 20:43:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:53,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:53,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:53,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664117946] [2022-07-22 20:43:53,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664117946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:53,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:53,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256910634] [2022-07-22 20:43:53,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:53,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:53,182 INFO L87 Difference]: Start difference. First operand 1525 states and 2089 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:53,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:53,982 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2022-07-22 20:43:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:43:53,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:53,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:53,990 INFO L225 Difference]: With dead ends: 2305 [2022-07-22 20:43:53,990 INFO L226 Difference]: Without dead ends: 1741 [2022-07-22 20:43:53,992 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 [2022-07-22 20:43:53,993 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 690 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:53,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 1094 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:43:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-07-22 20:43:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1525. [2022-07-22 20:43:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1354 states have (on average 1.3574593796159526) internal successors, (1838), 1373 states have internal predecessors, (1838), 104 states have call successors, (104), 55 states have call predecessors, (104), 65 states have return successors, (144), 98 states have call predecessors, (144), 103 states have call successors, (144) [2022-07-22 20:43:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2086 transitions. [2022-07-22 20:43:54,096 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2086 transitions. Word has length 101 [2022-07-22 20:43:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:54,097 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2086 transitions. [2022-07-22 20:43:54,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2086 transitions. [2022-07-22 20:43:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:54,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:54,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:43:54,100 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:54,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1381418652, now seen corresponding path program 1 times [2022-07-22 20:43:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:54,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899918205] [2022-07-22 20:43:54,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:54,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899918205] [2022-07-22 20:43:54,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899918205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:54,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:54,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518117954] [2022-07-22 20:43:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:54,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:54,182 INFO L87 Difference]: Start difference. First operand 1525 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:55,696 INFO L93 Difference]: Finished difference Result 2789 states and 4053 transitions. [2022-07-22 20:43:55,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:43:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:55,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:55,706 INFO L225 Difference]: With dead ends: 2789 [2022-07-22 20:43:55,707 INFO L226 Difference]: Without dead ends: 2225 [2022-07-22 20:43:55,709 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 [2022-07-22 20:43:55,709 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 886 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:55,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1764 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:43:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-07-22 20:43:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1894. [2022-07-22 20:43:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1681 states have (on average 1.3878643664485426) internal successors, (2333), 1702 states have internal predecessors, (2333), 132 states have call successors, (132), 67 states have call predecessors, (132), 79 states have return successors, (180), 128 states have call predecessors, (180), 131 states have call successors, (180) [2022-07-22 20:43:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2645 transitions. [2022-07-22 20:43:55,831 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2645 transitions. Word has length 101 [2022-07-22 20:43:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:55,831 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 2645 transitions. [2022-07-22 20:43:55,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2645 transitions. [2022-07-22 20:43:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:55,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:55,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:43:55,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash 323580574, now seen corresponding path program 1 times [2022-07-22 20:43:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891944663] [2022-07-22 20:43:55,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:55,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:55,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:55,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891944663] [2022-07-22 20:43:55,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891944663] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:55,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:55,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:55,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182704503] [2022-07-22 20:43:55,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:55,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:55,941 INFO L87 Difference]: Start difference. First operand 1894 states and 2645 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:57,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:57,321 INFO L93 Difference]: Finished difference Result 4094 states and 6052 transitions. [2022-07-22 20:43:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:43:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:57,335 INFO L225 Difference]: With dead ends: 4094 [2022-07-22 20:43:57,335 INFO L226 Difference]: Without dead ends: 3161 [2022-07-22 20:43:57,339 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 [2022-07-22 20:43:57,340 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 885 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:57,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1759 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:43:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2022-07-22 20:43:57,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 2631. [2022-07-22 20:43:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2334 states have (on average 1.4220222793487576) internal successors, (3319), 2359 states have internal predecessors, (3319), 188 states have call successors, (188), 91 states have call predecessors, (188), 107 states have return successors, (258), 188 states have call predecessors, (258), 187 states have call successors, (258) [2022-07-22 20:43:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3765 transitions. [2022-07-22 20:43:57,519 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3765 transitions. Word has length 101 [2022-07-22 20:43:57,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:57,519 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3765 transitions. [2022-07-22 20:43:57,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3765 transitions. [2022-07-22 20:43:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:57,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:57,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:57,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:43:57,524 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:57,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash -818921892, now seen corresponding path program 1 times [2022-07-22 20:43:57,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:57,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928972888] [2022-07-22 20:43:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:57,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:57,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928972888] [2022-07-22 20:43:57,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928972888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:57,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:57,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:57,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239120861] [2022-07-22 20:43:57,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:57,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:57,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:57,606 INFO L87 Difference]: Start difference. First operand 2631 states and 3765 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:43:59,309 INFO L93 Difference]: Finished difference Result 7333 states and 11008 transitions. [2022-07-22 20:43:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:43:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:43:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:43:59,333 INFO L225 Difference]: With dead ends: 7333 [2022-07-22 20:43:59,333 INFO L226 Difference]: Without dead ends: 5663 [2022-07-22 20:43:59,341 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 [2022-07-22 20:43:59,341 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 937 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:43:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1832 Invalid, 1915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:43:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5663 states. [2022-07-22 20:43:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5663 to 4088. [2022-07-22 20:43:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4555218947948223) internal successors, (5285), 3664 states have internal predecessors, (5285), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-07-22 20:43:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6001 transitions. [2022-07-22 20:43:59,627 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6001 transitions. Word has length 101 [2022-07-22 20:43:59,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:43:59,627 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 6001 transitions. [2022-07-22 20:43:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:43:59,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6001 transitions. [2022-07-22 20:43:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:43:59,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:43:59,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:43:59,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:43:59,633 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:43:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:43:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash -578682146, now seen corresponding path program 1 times [2022-07-22 20:43:59,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:43:59,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25050645] [2022-07-22 20:43:59,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:43:59,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:43:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:43:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:43:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:43:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:43:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:43:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:43:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:43:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:43:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25050645] [2022-07-22 20:43:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25050645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:43:59,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:43:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:43:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063874263] [2022-07-22 20:43:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:43:59,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:43:59,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:43:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:43:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:43:59,734 INFO L87 Difference]: Start difference. First operand 4088 states and 6001 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:00,642 INFO L93 Difference]: Finished difference Result 8151 states and 12358 transitions. [2022-07-22 20:44:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:44:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:00,662 INFO L225 Difference]: With dead ends: 8151 [2022-07-22 20:44:00,662 INFO L226 Difference]: Without dead ends: 5024 [2022-07-22 20:44:00,672 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 [2022-07-22 20:44:00,672 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 818 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:00,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 912 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:44:00,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-07-22 20:44:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4088. [2022-07-22 20:44:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.450839988983751) internal successors, (5268), 3664 states have internal predecessors, (5268), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-07-22 20:44:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5984 transitions. [2022-07-22 20:44:00,978 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5984 transitions. Word has length 101 [2022-07-22 20:44:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:00,978 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5984 transitions. [2022-07-22 20:44:00,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:00,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5984 transitions. [2022-07-22 20:44:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:44:00,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:00,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:00,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:44:00,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:00,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash 260351516, now seen corresponding path program 1 times [2022-07-22 20:44:00,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:00,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690690463] [2022-07-22 20:44:00,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:00,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:01,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:01,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690690463] [2022-07-22 20:44:01,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690690463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:01,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:01,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:44:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320763193] [2022-07-22 20:44:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:01,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:44:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:44:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:01,068 INFO L87 Difference]: Start difference. First operand 4088 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:02,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:02,016 INFO L93 Difference]: Finished difference Result 8133 states and 12271 transitions. [2022-07-22 20:44:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:44:02,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:02,040 INFO L225 Difference]: With dead ends: 8133 [2022-07-22 20:44:02,041 INFO L226 Difference]: Without dead ends: 5006 [2022-07-22 20:44:02,050 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 [2022-07-22 20:44:02,050 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 687 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:02,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1075 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:44:02,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5006 states. [2022-07-22 20:44:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5006 to 4088. [2022-07-22 20:44:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3631 states have (on average 1.4461580831726797) internal successors, (5251), 3664 states have internal predecessors, (5251), 292 states have call successors, (292), 139 states have call predecessors, (292), 163 states have return successors, (424), 300 states have call predecessors, (424), 291 states have call successors, (424) [2022-07-22 20:44:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5967 transitions. [2022-07-22 20:44:02,356 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5967 transitions. Word has length 101 [2022-07-22 20:44:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:02,357 INFO L495 AbstractCegarLoop]: Abstraction has 4088 states and 5967 transitions. [2022-07-22 20:44:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5967 transitions. [2022-07-22 20:44:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:44:02,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:02,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:02,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:44:02,363 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:02,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 287417118, now seen corresponding path program 1 times [2022-07-22 20:44:02,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637196522] [2022-07-22 20:44:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:02,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637196522] [2022-07-22 20:44:02,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637196522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:02,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:02,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:44:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220824271] [2022-07-22 20:44:02,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:44:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:44:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:02,446 INFO L87 Difference]: Start difference. First operand 4088 states and 5967 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:04,163 INFO L93 Difference]: Finished difference Result 12448 states and 18770 transitions. [2022-07-22 20:44:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:44:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:04,192 INFO L225 Difference]: With dead ends: 12448 [2022-07-22 20:44:04,192 INFO L226 Difference]: Without dead ends: 9321 [2022-07-22 20:44:04,203 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 [2022-07-22 20:44:04,204 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 968 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:04,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 1725 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:44:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9321 states. [2022-07-22 20:44:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9321 to 7027. [2022-07-22 20:44:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 6258 states have (on average 1.4689996804090764) internal successors, (9193), 6307 states have internal predecessors, (9193), 492 states have call successors, (492), 235 states have call predecessors, (492), 275 states have return successors, (802), 516 states have call predecessors, (802), 491 states have call successors, (802) [2022-07-22 20:44:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 10487 transitions. [2022-07-22 20:44:04,732 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 10487 transitions. Word has length 101 [2022-07-22 20:44:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:04,733 INFO L495 AbstractCegarLoop]: Abstraction has 7027 states and 10487 transitions. [2022-07-22 20:44:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 10487 transitions. [2022-07-22 20:44:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:44:04,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:04,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:04,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:44:04,740 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1789919780, now seen corresponding path program 1 times [2022-07-22 20:44:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:04,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021671324] [2022-07-22 20:44:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:04,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:04,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021671324] [2022-07-22 20:44:04,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021671324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:04,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:04,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:44:04,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640309706] [2022-07-22 20:44:04,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:44:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:04,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:44:04,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:04,830 INFO L87 Difference]: Start difference. First operand 7027 states and 10487 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:06,896 INFO L93 Difference]: Finished difference Result 22375 states and 34200 transitions. [2022-07-22 20:44:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:44:06,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:06,953 INFO L225 Difference]: With dead ends: 22375 [2022-07-22 20:44:06,953 INFO L226 Difference]: Without dead ends: 16309 [2022-07-22 20:44:06,976 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 [2022-07-22 20:44:06,977 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 885 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 1717 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:44:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16309 states. [2022-07-22 20:44:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16309 to 12917. [2022-07-22 20:44:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12917 states, 11540 states have (on average 1.486048526863085) internal successors, (17149), 11621 states have internal predecessors, (17149), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-07-22 20:44:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12917 states to 12917 states and 19729 transitions. [2022-07-22 20:44:07,998 INFO L78 Accepts]: Start accepts. Automaton has 12917 states and 19729 transitions. Word has length 101 [2022-07-22 20:44:07,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:07,998 INFO L495 AbstractCegarLoop]: Abstraction has 12917 states and 19729 transitions. [2022-07-22 20:44:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 12917 states and 19729 transitions. [2022-07-22 20:44:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:44:08,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:08,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:08,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:44:08,010 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:08,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash -902696934, now seen corresponding path program 1 times [2022-07-22 20:44:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:08,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933480450] [2022-07-22 20:44:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:08,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:08,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933480450] [2022-07-22 20:44:08,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933480450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:08,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:08,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:44:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355059200] [2022-07-22 20:44:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:08,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:44:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:44:08,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:08,104 INFO L87 Difference]: Start difference. First operand 12917 states and 19729 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:11,071 INFO L93 Difference]: Finished difference Result 34200 states and 52177 transitions. [2022-07-22 20:44:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:44:11,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:11,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:11,164 INFO L225 Difference]: With dead ends: 34200 [2022-07-22 20:44:11,165 INFO L226 Difference]: Without dead ends: 22245 [2022-07-22 20:44:11,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:44:11,202 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 605 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:11,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1363 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:44:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22245 states. [2022-07-22 20:44:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22245 to 13112. [2022-07-22 20:44:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13112 states, 11735 states have (on average 1.477971878994461) internal successors, (17344), 11816 states have internal predecessors, (17344), 876 states have call successors, (876), 427 states have call predecessors, (876), 499 states have return successors, (1704), 932 states have call predecessors, (1704), 875 states have call successors, (1704) [2022-07-22 20:44:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13112 states to 13112 states and 19924 transitions. [2022-07-22 20:44:12,116 INFO L78 Accepts]: Start accepts. Automaton has 13112 states and 19924 transitions. Word has length 101 [2022-07-22 20:44:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:12,117 INFO L495 AbstractCegarLoop]: Abstraction has 13112 states and 19924 transitions. [2022-07-22 20:44:12,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13112 states and 19924 transitions. [2022-07-22 20:44:12,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:44:12,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:12,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:44:12,129 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:12,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1706090524, now seen corresponding path program 1 times [2022-07-22 20:44:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:12,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507259569] [2022-07-22 20:44:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:12,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:12,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507259569] [2022-07-22 20:44:12,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507259569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:12,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:12,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:44:12,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114493543] [2022-07-22 20:44:12,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:12,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:44:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:12,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:44:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:12,230 INFO L87 Difference]: Start difference. First operand 13112 states and 19924 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:18,211 INFO L93 Difference]: Finished difference Result 69895 states and 110267 transitions. [2022-07-22 20:44:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:44:18,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:44:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:18,458 INFO L225 Difference]: With dead ends: 69895 [2022-07-22 20:44:18,458 INFO L226 Difference]: Without dead ends: 57745 [2022-07-22 20:44:18,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-22 20:44:18,539 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2018 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2045 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:18,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2045 Valid, 1615 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:44:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57745 states. [2022-07-22 20:44:21,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57745 to 47148. [2022-07-22 20:44:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47148 states, 42094 states have (on average 1.4848909583313536) internal successors, (62505), 42562 states have internal predecessors, (62505), 3191 states have call successors, (3191), 1597 states have call predecessors, (3191), 1861 states have return successors, (7419), 3052 states have call predecessors, (7419), 3190 states have call successors, (7419) [2022-07-22 20:44:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47148 states to 47148 states and 73115 transitions. [2022-07-22 20:44:22,094 INFO L78 Accepts]: Start accepts. Automaton has 47148 states and 73115 transitions. Word has length 101 [2022-07-22 20:44:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:22,094 INFO L495 AbstractCegarLoop]: Abstraction has 47148 states and 73115 transitions. [2022-07-22 20:44:22,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 20:44:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 47148 states and 73115 transitions. [2022-07-22 20:44:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 20:44:22,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:22,108 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] [2022-07-22 20:44:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:44:22,109 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash 924470242, now seen corresponding path program 1 times [2022-07-22 20:44:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:22,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270176399] [2022-07-22 20:44:22,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:44:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:44:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:44:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 20:44:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:44:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 20:44:22,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270176399] [2022-07-22 20:44:22,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270176399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:44:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802416760] [2022-07-22 20:44:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:22,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:44:22,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:44:22,174 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) [2022-07-22 20:44:22,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 20:44:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:22,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:44:22,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:44:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:44:22,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:44:22,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802416760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:22,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:44:22,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 20:44:22,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789645684] [2022-07-22 20:44:22,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:22,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:44:22,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:22,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:44:22,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:44:22,302 INFO L87 Difference]: Start difference. First operand 47148 states and 73115 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) [2022-07-22 20:44:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:25,195 INFO L93 Difference]: Finished difference Result 47527 states and 73583 transitions. [2022-07-22 20:44:25,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:44:25,196 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 [2022-07-22 20:44:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:25,382 INFO L225 Difference]: With dead ends: 47527 [2022-07-22 20:44:25,382 INFO L226 Difference]: Without dead ends: 46201 [2022-07-22 20:44:25,424 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 [2022-07-22 20:44:25,424 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 62 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 816 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 [2022-07-22 20:44:25,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 816 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:44:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46201 states. [2022-07-22 20:44:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46201 to 46201. [2022-07-22 20:44:28,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46201 states, 41250 states have (on average 1.4896242424242425) internal successors, (61447), 41702 states have internal predecessors, (61447), 3134 states have call successors, (3134), 1560 states have call predecessors, (3134), 1816 states have return successors, (7327), 3002 states have call predecessors, (7327), 3134 states have call successors, (7327) [2022-07-22 20:44:28,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46201 states to 46201 states and 71908 transitions. [2022-07-22 20:44:28,900 INFO L78 Accepts]: Start accepts. Automaton has 46201 states and 71908 transitions. Word has length 103 [2022-07-22 20:44:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:28,900 INFO L495 AbstractCegarLoop]: Abstraction has 46201 states and 71908 transitions. [2022-07-22 20:44:28,900 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) [2022-07-22 20:44:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 46201 states and 71908 transitions. [2022-07-22 20:44:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:44:28,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:28,967 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:28,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 20:44:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:44:29,185 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -270482580, now seen corresponding path program 1 times [2022-07-22 20:44:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:29,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183609159] [2022-07-22 20:44:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 20:44:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:44:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:44:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 20:44:29,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:29,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183609159] [2022-07-22 20:44:29,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183609159] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:44:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725514632] [2022-07-22 20:44:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:29,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:44:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:44:29,318 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) [2022-07-22 20:44:29,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 20:44:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:29,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:44:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:44:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 20:44:29,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:44:29,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725514632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:29,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:44:29,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:44:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811411302] [2022-07-22 20:44:29,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:29,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:44:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:44:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:44:29,528 INFO L87 Difference]: Start difference. First operand 46201 states and 71908 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2022-07-22 20:44:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:34,773 INFO L93 Difference]: Finished difference Result 137272 states and 215922 transitions. [2022-07-22 20:44:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:44:34,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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 164 [2022-07-22 20:44:34,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:35,063 INFO L225 Difference]: With dead ends: 137272 [2022-07-22 20:44:35,063 INFO L226 Difference]: Without dead ends: 91086 [2022-07-22 20:44:35,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:44:35,175 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 246 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 590 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 [2022-07-22 20:44:35,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 590 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:44:35,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91086 states. [2022-07-22 20:44:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91086 to 90564. [2022-07-22 20:44:40,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90564 states, 80927 states have (on average 1.489428744423987) internal successors, (120535), 81830 states have internal predecessors, (120535), 6004 states have call successors, (6004), 3120 states have call predecessors, (6004), 3632 states have return successors, (14132), 5677 states have call predecessors, (14132), 6004 states have call successors, (14132) [2022-07-22 20:44:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90564 states to 90564 states and 140671 transitions. [2022-07-22 20:44:41,263 INFO L78 Accepts]: Start accepts. Automaton has 90564 states and 140671 transitions. Word has length 164 [2022-07-22 20:44:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:41,263 INFO L495 AbstractCegarLoop]: Abstraction has 90564 states and 140671 transitions. [2022-07-22 20:44:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 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) [2022-07-22 20:44:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 90564 states and 140671 transitions. [2022-07-22 20:44:41,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 20:44:41,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:41,379 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:41,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 20:44:41,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-22 20:44:41,595 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1216300980, now seen corresponding path program 1 times [2022-07-22 20:44:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:41,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530256761] [2022-07-22 20:44:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:44:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:44:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:44:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:44:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:44:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 20:44:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:44:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 20:44:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 20:44:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530256761] [2022-07-22 20:44:41,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530256761] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:44:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598235924] [2022-07-22 20:44:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:41,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:44:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:44:41,824 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) [2022-07-22 20:44:41,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 20:44:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:41,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:44:41,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:44:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 20:44:42,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:44:42,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598235924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:42,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:44:42,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:44:42,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476439566] [2022-07-22 20:44:42,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:44:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:42,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:44:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:44:42,034 INFO L87 Difference]: Start difference. First operand 90564 states and 140671 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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)