./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.09.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 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:29:51,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:29:51,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:29:51,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:29:51,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:29:51,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:29:51,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:29:51,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:29:51,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:29:51,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:29:51,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:29:51,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:29:51,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:29:51,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:29:51,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:29:51,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:29:51,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:29:51,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:29:51,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:29:51,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:29:51,206 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:29:51,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:29:51,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:29:51,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:29:51,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:29:51,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:29:51,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:29:51,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:29:51,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:29:51,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:29:51,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:29:51,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:29:51,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:29:51,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:29:51,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:29:51,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:29:51,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:29:51,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:29:51,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:29:51,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:29:51,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:29:51,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:29:51,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:29:51,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:29:51,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:29:51,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:29:51,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:29:51,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:29:51,266 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:29:51,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:29:51,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:29:51,267 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:29:51,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:29:51,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:29:51,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:29:51,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:29:51,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:29:51,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:29:51,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:29:51,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:29:51,269 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:29:51,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:29:51,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:29:51,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:29:51,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:29:51,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:29:51,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:29:51,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:29:51,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:29:51,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:29:51,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:29:51,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:29:51,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:29:51,273 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:29:51,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:29:51,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:29:51,274 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d55d399b7f413c968459e57be858565c9c3a03797404fd2613513b79af9aeb3 [2022-07-19 20:29:51,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:29:51,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:29:51,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:29:51,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:29:51,532 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:29:51,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-19 20:29:51,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8b754ee/67919fb39b7248db9de1e5f8ca689e28/FLAGb5d8b54d5 [2022-07-19 20:29:52,112 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:29:52,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-19 20:29:52,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8b754ee/67919fb39b7248db9de1e5f8ca689e28/FLAGb5d8b54d5 [2022-07-19 20:29:52,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a8b754ee/67919fb39b7248db9de1e5f8ca689e28 [2022-07-19 20:29:52,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:29:52,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:29:52,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:29:52,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:29:52,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:29:52,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:29:52" (1/1) ... [2022-07-19 20:29:52,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d448350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:52, skipping insertion in model container [2022-07-19 20:29:52,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:29:52" (1/1) ... [2022-07-19 20:29:52,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:29:52,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:29:52,824 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.09.cil-1.c[913,926] [2022-07-19 20:29:52,861 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.09.cil-1.c[5977,5990] [2022-07-19 20:29:52,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:29:52,961 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:29:52,975 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.09.cil-1.c[913,926] [2022-07-19 20:29:52,996 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.09.cil-1.c[5977,5990] [2022-07-19 20:29:53,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:29:53,091 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:29:53,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53 WrapperNode [2022-07-19 20:29:53,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:29:53,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:29:53,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:29:53,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:29:53,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,170 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 881 [2022-07-19 20:29:53,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:29:53,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:29:53,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:29:53,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:29:53,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:29:53,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:29:53,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:29:53,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:29:53,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (1/1) ... [2022-07-19 20:29:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:29:53,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:29:53,260 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) [2022-07-19 20:29:53,261 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 [2022-07-19 20:29:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:29:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:29:53,290 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:29:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-19 20:29:53,292 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-19 20:29:53,292 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:29:53,292 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:29:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:29:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:29:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:29:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:29:53,293 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:29:53,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:29:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:29:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:29:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:29:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:29:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:29:53,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:29:53,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:29:53,295 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:29:53,295 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:29:53,465 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:29:53,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:29:54,219 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:29:54,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:29:54,236 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 20:29:54,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:29:54 BoogieIcfgContainer [2022-07-19 20:29:54,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:29:54,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:29:54,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:29:54,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:29:54,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:29:52" (1/3) ... [2022-07-19 20:29:54,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df47307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:29:54, skipping insertion in model container [2022-07-19 20:29:54,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:29:53" (2/3) ... [2022-07-19 20:29:54,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df47307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:29:54, skipping insertion in model container [2022-07-19 20:29:54,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:29:54" (3/3) ... [2022-07-19 20:29:54,247 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.09.cil-1.c [2022-07-19 20:29:54,259 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:29:54,260 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:29:54,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:29:54,318 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@24bc145e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e46ba45 [2022-07-19 20:29:54,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:29:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-19 20:29:54,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 20:29:54,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:54,336 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] [2022-07-19 20:29:54,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:54,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1554468982, now seen corresponding path program 1 times [2022-07-19 20:29:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:54,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754536443] [2022-07-19 20:29:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 20:29:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:29:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:54,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754536443] [2022-07-19 20:29:54,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754536443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:29:54,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:29:54,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:29:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52805895] [2022-07-19 20:29:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:29:54,669 INFO L87 Difference]: Start difference. First operand has 379 states, 338 states have (on average 1.636094674556213) internal successors, (553), 343 states have internal predecessors, (553), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) 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) [2022-07-19 20:29:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:54,969 INFO L93 Difference]: Finished difference Result 806 states and 1296 transitions. [2022-07-19 20:29:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:29:54,972 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 [2022-07-19 20:29:54,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:54,991 INFO L225 Difference]: With dead ends: 806 [2022-07-19 20:29:54,992 INFO L226 Difference]: Without dead ends: 439 [2022-07-19 20:29:54,999 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 [2022-07-19 20:29:55,005 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 764 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:55,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 943 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:29:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-19 20:29:55,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 433. [2022-07-19 20:29:55,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 387 states have (on average 1.5142118863049097) internal successors, (586), 391 states have internal predecessors, (586), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (37), 31 states have call predecessors, (37), 31 states have call successors, (37) [2022-07-19 20:29:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 656 transitions. [2022-07-19 20:29:55,080 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 656 transitions. Word has length 44 [2022-07-19 20:29:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 656 transitions. [2022-07-19 20:29:55,081 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) [2022-07-19 20:29:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 656 transitions. [2022-07-19 20:29:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 20:29:55,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:55,085 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] [2022-07-19 20:29:55,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:29:55,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1185645894, now seen corresponding path program 1 times [2022-07-19 20:29:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:55,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274078710] [2022-07-19 20:29:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 20:29:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:29:55,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:55,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274078710] [2022-07-19 20:29:55,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274078710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:29:55,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:29:55,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:29:55,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238565190] [2022-07-19 20:29:55,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:55,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:55,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:29:55,159 INFO L87 Difference]: Start difference. First operand 433 states and 656 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) [2022-07-19 20:29:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:55,597 INFO L93 Difference]: Finished difference Result 681 states and 996 transitions. [2022-07-19 20:29:55,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:29:55,598 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 [2022-07-19 20:29:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:55,602 INFO L225 Difference]: With dead ends: 681 [2022-07-19 20:29:55,602 INFO L226 Difference]: Without dead ends: 557 [2022-07-19 20:29:55,603 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 [2022-07-19 20:29:55,604 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 308 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:55,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1208 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:29:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-19 20:29:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 500. [2022-07-19 20:29:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 448 states have (on average 1.4955357142857142) internal successors, (670), 452 states have internal predecessors, (670), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-19 20:29:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 746 transitions. [2022-07-19 20:29:55,634 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 746 transitions. Word has length 45 [2022-07-19 20:29:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:55,634 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 746 transitions. [2022-07-19 20:29:55,635 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) [2022-07-19 20:29:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 746 transitions. [2022-07-19 20:29:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 20:29:55,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:55,637 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] [2022-07-19 20:29:55,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:29:55,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash -98711567, now seen corresponding path program 1 times [2022-07-19 20:29:55,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:55,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642332109] [2022-07-19 20:29:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 20:29:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:29:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:55,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642332109] [2022-07-19 20:29:55,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642332109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:29:55,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:29:55,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:29:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939363053] [2022-07-19 20:29:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:29:55,709 INFO L87 Difference]: Start difference. First operand 500 states and 746 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) [2022-07-19 20:29:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:55,891 INFO L93 Difference]: Finished difference Result 908 states and 1305 transitions. [2022-07-19 20:29:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:29:55,891 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 [2022-07-19 20:29:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:55,897 INFO L225 Difference]: With dead ends: 908 [2022-07-19 20:29:55,897 INFO L226 Difference]: Without dead ends: 717 [2022-07-19 20:29:55,901 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 [2022-07-19 20:29:55,903 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 773 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:55,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 942 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:29:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-19 20:29:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 665. [2022-07-19 20:29:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 594 states have (on average 1.4478114478114479) internal successors, (860), 601 states have internal predecessors, (860), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (57), 43 states have call predecessors, (57), 45 states have call successors, (57) [2022-07-19 20:29:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 964 transitions. [2022-07-19 20:29:55,938 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 964 transitions. Word has length 45 [2022-07-19 20:29:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:55,939 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 964 transitions. [2022-07-19 20:29:55,939 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) [2022-07-19 20:29:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 964 transitions. [2022-07-19 20:29:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 20:29:55,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:55,942 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] [2022-07-19 20:29:55,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:29:55,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1131261626, now seen corresponding path program 1 times [2022-07-19 20:29:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757319804] [2022-07-19 20:29:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:29:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:29:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:29:56,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:56,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757319804] [2022-07-19 20:29:56,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757319804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:29:56,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:29:56,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:29:56,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254639802] [2022-07-19 20:29:56,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:56,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:56,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:56,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:29:56,032 INFO L87 Difference]: Start difference. First operand 665 states and 964 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) [2022-07-19 20:29:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:56,419 INFO L93 Difference]: Finished difference Result 1249 states and 1749 transitions. [2022-07-19 20:29:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:29:56,419 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 [2022-07-19 20:29:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:56,424 INFO L225 Difference]: With dead ends: 1249 [2022-07-19 20:29:56,424 INFO L226 Difference]: Without dead ends: 893 [2022-07-19 20:29:56,425 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 [2022-07-19 20:29:56,426 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 292 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:56,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1263 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:29:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-19 20:29:56,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 855. [2022-07-19 20:29:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 760 states have (on average 1.394736842105263) internal successors, (1060), 769 states have internal predecessors, (1060), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (81), 57 states have call predecessors, (81), 59 states have call successors, (81) [2022-07-19 20:29:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1202 transitions. [2022-07-19 20:29:56,462 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1202 transitions. Word has length 62 [2022-07-19 20:29:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:56,463 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1202 transitions. [2022-07-19 20:29:56,463 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) [2022-07-19 20:29:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1202 transitions. [2022-07-19 20:29:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:29:56,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:56,465 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] [2022-07-19 20:29:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:29:56,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1244909695, now seen corresponding path program 1 times [2022-07-19 20:29:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343364881] [2022-07-19 20:29:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 20:29:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:29:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 20:29:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:56,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343364881] [2022-07-19 20:29:56,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343364881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:29:56,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:29:56,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 20:29:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344772564] [2022-07-19 20:29:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:56,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 20:29:56,522 INFO L87 Difference]: Start difference. First operand 855 states and 1202 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) [2022-07-19 20:29:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:56,676 INFO L93 Difference]: Finished difference Result 1508 states and 2055 transitions. [2022-07-19 20:29:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 20:29:56,677 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 [2022-07-19 20:29:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:56,682 INFO L225 Difference]: With dead ends: 1508 [2022-07-19 20:29:56,682 INFO L226 Difference]: Without dead ends: 1054 [2022-07-19 20:29:56,683 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 [2022-07-19 20:29:56,684 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 760 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:56,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 939 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:29:56,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-07-19 20:29:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 999. [2022-07-19 20:29:56,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 888 states have (on average 1.3637387387387387) internal successors, (1211), 899 states have internal predecessors, (1211), 69 states have call successors, (69), 35 states have call predecessors, (69), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-19 20:29:56,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1375 transitions. [2022-07-19 20:29:56,732 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1375 transitions. Word has length 67 [2022-07-19 20:29:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:56,732 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 1375 transitions. [2022-07-19 20:29:56,733 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) [2022-07-19 20:29:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1375 transitions. [2022-07-19 20:29:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 20:29:56,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:56,735 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] [2022-07-19 20:29:56,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:29:56,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:56,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2059834607, now seen corresponding path program 1 times [2022-07-19 20:29:56,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:56,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120214800] [2022-07-19 20:29:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:56,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:29:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:29:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:29:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:56,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120214800] [2022-07-19 20:29:56,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120214800] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:29:56,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544556915] [2022-07-19 20:29:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:29:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:29:56,835 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) [2022-07-19 20:29:56,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:29:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:29:56,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:29:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:29:57,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:29:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:29:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544556915] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 20:29:57,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 20:29:57,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-19 20:29:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234311420] [2022-07-19 20:29:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:29:57,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 20:29:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 20:29:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:29:57,120 INFO L87 Difference]: Start difference. First operand 999 states and 1375 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) [2022-07-19 20:29:57,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:57,301 INFO L93 Difference]: Finished difference Result 1055 states and 1443 transitions. [2022-07-19 20:29:57,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 20:29:57,302 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 [2022-07-19 20:29:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:57,307 INFO L225 Difference]: With dead ends: 1055 [2022-07-19 20:29:57,307 INFO L226 Difference]: Without dead ends: 1052 [2022-07-19 20:29:57,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:29:57,314 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1025 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 657 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 20:29:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-07-19 20:29:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 998. [2022-07-19 20:29:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 888 states have (on average 1.3614864864864864) internal successors, (1209), 898 states have internal predecessors, (1209), 68 states have call successors, (68), 35 states have call predecessors, (68), 40 states have return successors, (95), 65 states have call predecessors, (95), 67 states have call successors, (95) [2022-07-19 20:29:57,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1372 transitions. [2022-07-19 20:29:57,375 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1372 transitions. Word has length 68 [2022-07-19 20:29:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1372 transitions. [2022-07-19 20:29:57,378 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) [2022-07-19 20:29:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1372 transitions. [2022-07-19 20:29:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 20:29:57,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:57,381 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] [2022-07-19 20:29:57,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:29:57,597 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 [2022-07-19 20:29:57,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:29:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:29:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash -570809660, now seen corresponding path program 1 times [2022-07-19 20:29:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:29:57,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99269198] [2022-07-19 20:29:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:29:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:29:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:57,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:29:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:29:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:29:57,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:29:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99269198] [2022-07-19 20:29:57,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99269198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:29:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307686203] [2022-07-19 20:29:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:29:57,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:29:57,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:29:57,697 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) [2022-07-19 20:29:57,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:29:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:29:57,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:29:57,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:29:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:29:58,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:29:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:29:58,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307686203] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:29:58,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:29:58,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-19 20:29:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569073522] [2022-07-19 20:29:58,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:29:58,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 20:29:58,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:29:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 20:29:58,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:29:58,113 INFO L87 Difference]: Start difference. First operand 998 states and 1372 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) [2022-07-19 20:29:59,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:29:59,762 INFO L93 Difference]: Finished difference Result 2698 states and 3592 transitions. [2022-07-19 20:29:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-19 20:29:59,763 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 [2022-07-19 20:29:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:29:59,772 INFO L225 Difference]: With dead ends: 2698 [2022-07-19 20:29:59,773 INFO L226 Difference]: Without dead ends: 2154 [2022-07-19 20:29:59,775 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 [2022-07-19 20:29:59,776 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1566 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:29:59,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 3599 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:29:59,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-07-19 20:29:59,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1387. [2022-07-19 20:29:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1238 states have (on average 1.327140549273021) internal successors, (1643), 1256 states have internal predecessors, (1643), 88 states have call successors, (88), 49 states have call predecessors, (88), 59 states have return successors, (129), 82 states have call predecessors, (129), 87 states have call successors, (129) [2022-07-19 20:29:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1860 transitions. [2022-07-19 20:29:59,843 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1860 transitions. Word has length 69 [2022-07-19 20:29:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:29:59,844 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1860 transitions. [2022-07-19 20:29:59,844 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) [2022-07-19 20:29:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1860 transitions. [2022-07-19 20:29:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 20:29:59,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:29:59,855 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] [2022-07-19 20:29:59,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:30:00,071 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 [2022-07-19 20:30:00,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:00,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1763884292, now seen corresponding path program 1 times [2022-07-19 20:30:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213176470] [2022-07-19 20:30:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:00,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:30:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:30:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:30:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:30:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 20:30:00,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:00,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213176470] [2022-07-19 20:30:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213176470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:30:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180840287] [2022-07-19 20:30:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:00,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:30:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:30:00,150 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) [2022-07-19 20:30:00,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:30:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 20:30:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:30:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 20:30:00,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:30:00,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180840287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:00,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:30:00,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 20:30:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141108681] [2022-07-19 20:30:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:00,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:30:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:30:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:00,310 INFO L87 Difference]: Start difference. First operand 1387 states and 1860 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) [2022-07-19 20:30:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:00,373 INFO L93 Difference]: Finished difference Result 2110 states and 2798 transitions. [2022-07-19 20:30:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:30:00,373 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 [2022-07-19 20:30:00,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:00,379 INFO L225 Difference]: With dead ends: 2110 [2022-07-19 20:30:00,379 INFO L226 Difference]: Without dead ends: 1265 [2022-07-19 20:30:00,381 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 [2022-07-19 20:30:00,381 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 525 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 671 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 [2022-07-19 20:30:00,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 671 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:30:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2022-07-19 20:30:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1250. [2022-07-19 20:30:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1117 states have (on average 1.3294538943598926) internal successors, (1485), 1134 states have internal predecessors, (1485), 80 states have call successors, (80), 43 states have call predecessors, (80), 51 states have return successors, (115), 73 states have call predecessors, (115), 79 states have call successors, (115) [2022-07-19 20:30:00,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1680 transitions. [2022-07-19 20:30:00,440 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1680 transitions. Word has length 88 [2022-07-19 20:30:00,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:00,441 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1680 transitions. [2022-07-19 20:30:00,441 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) [2022-07-19 20:30:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1680 transitions. [2022-07-19 20:30:00,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 20:30:00,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:00,459 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] [2022-07-19 20:30:00,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:30:00,679 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 [2022-07-19 20:30:00,680 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash -555075298, now seen corresponding path program 1 times [2022-07-19 20:30:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:00,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346365662] [2022-07-19 20:30:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:30:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:30:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:30:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 20:30:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:30:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 20:30:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:00,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346365662] [2022-07-19 20:30:00,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346365662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:30:00,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363790552] [2022-07-19 20:30:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:30:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:30:00,767 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) [2022-07-19 20:30:00,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 20:30:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:00,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:30:00,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:30:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:30:00,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:30:00,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363790552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:00,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:30:00,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 20:30:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645953936] [2022-07-19 20:30:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:30:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:30:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:00,920 INFO L87 Difference]: Start difference. First operand 1250 states and 1680 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) [2022-07-19 20:30:00,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:00,963 INFO L93 Difference]: Finished difference Result 1629 states and 2148 transitions. [2022-07-19 20:30:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:30:00,964 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 [2022-07-19 20:30:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:00,966 INFO L225 Difference]: With dead ends: 1629 [2022-07-19 20:30:00,966 INFO L226 Difference]: Without dead ends: 303 [2022-07-19 20:30:00,968 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 [2022-07-19 20:30:00,969 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 62 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1150 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 [2022-07-19 20:30:00,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1150 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:30:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-19 20:30:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2022-07-19 20:30:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.564102564102564) internal successors, (427), 274 states have internal predecessors, (427), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 20:30:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 473 transitions. [2022-07-19 20:30:00,980 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 473 transitions. Word has length 103 [2022-07-19 20:30:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:00,980 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 473 transitions. [2022-07-19 20:30:00,980 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) [2022-07-19 20:30:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 473 transitions. [2022-07-19 20:30:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:00,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:00,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:01,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 20:30:01,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:30:01,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1331621070, now seen corresponding path program 1 times [2022-07-19 20:30:01,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:01,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245877971] [2022-07-19 20:30:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:01,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245877971] [2022-07-19 20:30:01,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245877971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:01,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:01,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:30:01,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391913608] [2022-07-19 20:30:01,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:30:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:01,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:30:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:30:01,337 INFO L87 Difference]: Start difference. First operand 303 states and 473 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:30:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:02,272 INFO L93 Difference]: Finished difference Result 704 states and 1117 transitions. [2022-07-19 20:30:02,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:30:02,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-19 20:30:02,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:02,275 INFO L225 Difference]: With dead ends: 704 [2022-07-19 20:30:02,275 INFO L226 Difference]: Without dead ends: 412 [2022-07-19 20:30:02,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:30:02,277 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 801 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:02,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 833 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:30:02,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-19 20:30:02,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 303. [2022-07-19 20:30:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 273 states have (on average 1.5604395604395604) internal successors, (426), 274 states have internal predecessors, (426), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 20:30:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 472 transitions. [2022-07-19 20:30:02,295 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 472 transitions. Word has length 145 [2022-07-19 20:30:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:02,295 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 472 transitions. [2022-07-19 20:30:02,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:30:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 472 transitions. [2022-07-19 20:30:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:02,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:02,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:30:02,300 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1695087568, now seen corresponding path program 1 times [2022-07-19 20:30:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109997247] [2022-07-19 20:30:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:02,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109997247] [2022-07-19 20:30:02,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109997247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:02,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:02,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:30:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902083827] [2022-07-19 20:30:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:02,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:30:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:30:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:30:02,421 INFO L87 Difference]: Start difference. First operand 303 states and 472 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-19 20:30:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:04,400 INFO L93 Difference]: Finished difference Result 1103 states and 1759 transitions. [2022-07-19 20:30:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:30:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:04,405 INFO L225 Difference]: With dead ends: 1103 [2022-07-19 20:30:04,405 INFO L226 Difference]: Without dead ends: 818 [2022-07-19 20:30:04,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:30:04,407 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 1208 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:04,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1317 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 20:30:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-07-19 20:30:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 601. [2022-07-19 20:30:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 546 states have (on average 1.5732600732600732) internal successors, (859), 548 states have internal predecessors, (859), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-19 20:30:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 944 transitions. [2022-07-19 20:30:04,451 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 944 transitions. Word has length 145 [2022-07-19 20:30:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:04,452 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 944 transitions. [2022-07-19 20:30:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-19 20:30:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 944 transitions. [2022-07-19 20:30:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:04,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:04,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:04,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:30:04,454 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:04,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:04,455 INFO L85 PathProgramCache]: Analyzing trace with hash 47915956, now seen corresponding path program 1 times [2022-07-19 20:30:04,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:04,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740626018] [2022-07-19 20:30:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:04,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:04,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:04,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740626018] [2022-07-19 20:30:04,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740626018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:04,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:04,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:04,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493105520] [2022-07-19 20:30:04,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:04,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:04,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:04,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:04,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:04,606 INFO L87 Difference]: Start difference. First operand 601 states and 944 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:06,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:06,988 INFO L93 Difference]: Finished difference Result 1821 states and 2906 transitions. [2022-07-19 20:30:06,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:30:06,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:06,996 INFO L225 Difference]: With dead ends: 1821 [2022-07-19 20:30:06,996 INFO L226 Difference]: Without dead ends: 1238 [2022-07-19 20:30:06,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:30:06,999 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1230 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:06,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2284 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:30:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-07-19 20:30:07,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 878. [2022-07-19 20:30:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 798 states have (on average 1.5664160401002507) internal successors, (1250), 801 states have internal predecessors, (1250), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-19 20:30:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1373 transitions. [2022-07-19 20:30:07,066 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1373 transitions. Word has length 145 [2022-07-19 20:30:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:07,066 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1373 transitions. [2022-07-19 20:30:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1373 transitions. [2022-07-19 20:30:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:07,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:07,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:30:07,073 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 994953842, now seen corresponding path program 1 times [2022-07-19 20:30:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:07,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054326164] [2022-07-19 20:30:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:07,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:07,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054326164] [2022-07-19 20:30:07,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054326164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:07,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:07,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:07,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985346663] [2022-07-19 20:30:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:07,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:07,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:07,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:07,189 INFO L87 Difference]: Start difference. First operand 878 states and 1373 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:09,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:09,614 INFO L93 Difference]: Finished difference Result 2878 states and 4583 transitions. [2022-07-19 20:30:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:30:09,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:09,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:09,625 INFO L225 Difference]: With dead ends: 2878 [2022-07-19 20:30:09,625 INFO L226 Difference]: Without dead ends: 2018 [2022-07-19 20:30:09,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:30:09,628 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1224 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:09,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 2272 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:30:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-07-19 20:30:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1436. [2022-07-19 20:30:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1306 states have (on average 1.5612557427258806) internal successors, (2039), 1311 states have internal predecessors, (2039), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-19 20:30:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2242 transitions. [2022-07-19 20:30:09,730 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2242 transitions. Word has length 145 [2022-07-19 20:30:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:09,731 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2242 transitions. [2022-07-19 20:30:09,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2242 transitions. [2022-07-19 20:30:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:09,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:09,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:09,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:30:09,733 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1055455056, now seen corresponding path program 1 times [2022-07-19 20:30:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237239340] [2022-07-19 20:30:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:09,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237239340] [2022-07-19 20:30:09,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237239340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:09,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:09,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:09,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371611893] [2022-07-19 20:30:09,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:09,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:09,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:09,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:09,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:09,857 INFO L87 Difference]: Start difference. First operand 1436 states and 2242 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:12,227 INFO L93 Difference]: Finished difference Result 4918 states and 7800 transitions. [2022-07-19 20:30:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:30:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:12,243 INFO L225 Difference]: With dead ends: 4918 [2022-07-19 20:30:12,243 INFO L226 Difference]: Without dead ends: 3500 [2022-07-19 20:30:12,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:30:12,248 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1223 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:12,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2267 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:30:12,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2022-07-19 20:30:12,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 2553. [2022-07-19 20:30:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.557038312526905) internal successors, (3617), 2332 states have internal predecessors, (3617), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-19 20:30:12,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3986 transitions. [2022-07-19 20:30:12,455 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3986 transitions. Word has length 145 [2022-07-19 20:30:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:12,455 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3986 transitions. [2022-07-19 20:30:12,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3986 transitions. [2022-07-19 20:30:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:12,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:12,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:30:12,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash -567407950, now seen corresponding path program 1 times [2022-07-19 20:30:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:12,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451926368] [2022-07-19 20:30:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:12,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451926368] [2022-07-19 20:30:12,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451926368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:12,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:12,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481934442] [2022-07-19 20:30:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:12,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:12,590 INFO L87 Difference]: Start difference. First operand 2553 states and 3986 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:13,885 INFO L93 Difference]: Finished difference Result 6054 states and 9605 transitions. [2022-07-19 20:30:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:30:13,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:13,901 INFO L225 Difference]: With dead ends: 6054 [2022-07-19 20:30:13,902 INFO L226 Difference]: Without dead ends: 3519 [2022-07-19 20:30:13,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:30:13,910 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1005 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:13,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1082 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:30:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2022-07-19 20:30:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 2553. [2022-07-19 20:30:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5531640120533792) internal successors, (3608), 2332 states have internal predecessors, (3608), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-19 20:30:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3977 transitions. [2022-07-19 20:30:14,131 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3977 transitions. Word has length 145 [2022-07-19 20:30:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:14,132 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3977 transitions. [2022-07-19 20:30:14,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3977 transitions. [2022-07-19 20:30:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:14,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:14,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:14,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:30:14,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1660043152, now seen corresponding path program 1 times [2022-07-19 20:30:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029356579] [2022-07-19 20:30:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:14,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:14,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029356579] [2022-07-19 20:30:14,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029356579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:14,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:14,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338352404] [2022-07-19 20:30:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:14,272 INFO L87 Difference]: Start difference. First operand 2553 states and 3977 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:15,550 INFO L93 Difference]: Finished difference Result 6044 states and 9558 transitions. [2022-07-19 20:30:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:30:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:15,566 INFO L225 Difference]: With dead ends: 6044 [2022-07-19 20:30:15,567 INFO L226 Difference]: Without dead ends: 3509 [2022-07-19 20:30:15,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:30:15,574 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 873 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:15,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1234 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:30:15,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-19 20:30:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 2553. [2022-07-19 20:30:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.5492897115798536) internal successors, (3599), 2332 states have internal predecessors, (3599), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-19 20:30:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3968 transitions. [2022-07-19 20:30:15,821 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3968 transitions. Word has length 145 [2022-07-19 20:30:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:15,821 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3968 transitions. [2022-07-19 20:30:15,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:15,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3968 transitions. [2022-07-19 20:30:15,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:15,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:15,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:15,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:30:15,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1352751858, now seen corresponding path program 1 times [2022-07-19 20:30:15,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:15,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527132214] [2022-07-19 20:30:15,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:15,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:15,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527132214] [2022-07-19 20:30:15,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527132214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:15,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:15,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051949320] [2022-07-19 20:30:15,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:15,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:15,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:15,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:15,957 INFO L87 Difference]: Start difference. First operand 2553 states and 3968 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:17,065 INFO L93 Difference]: Finished difference Result 6034 states and 9511 transitions. [2022-07-19 20:30:17,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:30:17,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:17,079 INFO L225 Difference]: With dead ends: 6034 [2022-07-19 20:30:17,079 INFO L226 Difference]: Without dead ends: 3499 [2022-07-19 20:30:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:30:17,087 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 1051 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:17,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1048 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:30:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3499 states. [2022-07-19 20:30:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3499 to 2553. [2022-07-19 20:30:17,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 2323 states have (on average 1.545415411106328) internal successors, (3590), 2332 states have internal predecessors, (3590), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-19 20:30:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3959 transitions. [2022-07-19 20:30:17,326 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3959 transitions. Word has length 145 [2022-07-19 20:30:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3959 transitions. [2022-07-19 20:30:17,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3959 transitions. [2022-07-19 20:30:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:17,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:17,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:30:17,330 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:17,330 INFO L85 PathProgramCache]: Analyzing trace with hash -489723856, now seen corresponding path program 1 times [2022-07-19 20:30:17,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:17,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083884614] [2022-07-19 20:30:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:17,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:17,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083884614] [2022-07-19 20:30:17,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083884614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:17,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:17,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:17,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993331382] [2022-07-19 20:30:17,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:17,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:17,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:17,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:17,444 INFO L87 Difference]: Start difference. First operand 2553 states and 3959 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:19,986 INFO L93 Difference]: Finished difference Result 8967 states and 14058 transitions. [2022-07-19 20:30:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:30:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:20,013 INFO L225 Difference]: With dead ends: 8967 [2022-07-19 20:30:20,013 INFO L226 Difference]: Without dead ends: 6432 [2022-07-19 20:30:20,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:30:20,024 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1201 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:20,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2244 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:30:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2022-07-19 20:30:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 4821. [2022-07-19 20:30:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5399681166021408) internal successors, (6762), 4408 states have internal predecessors, (6762), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-19 20:30:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7481 transitions. [2022-07-19 20:30:20,396 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7481 transitions. Word has length 145 [2022-07-19 20:30:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:20,396 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7481 transitions. [2022-07-19 20:30:20,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7481 transitions. [2022-07-19 20:30:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:20,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:20,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:30:20,401 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2083240754, now seen corresponding path program 1 times [2022-07-19 20:30:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:20,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931306392] [2022-07-19 20:30:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:20,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931306392] [2022-07-19 20:30:20,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931306392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:20,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:20,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016367754] [2022-07-19 20:30:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:20,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:20,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:20,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:20,512 INFO L87 Difference]: Start difference. First operand 4821 states and 7481 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:21,859 INFO L93 Difference]: Finished difference Result 11286 states and 17750 transitions. [2022-07-19 20:30:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:30:21,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:21,894 INFO L225 Difference]: With dead ends: 11286 [2022-07-19 20:30:21,894 INFO L226 Difference]: Without dead ends: 6483 [2022-07-19 20:30:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:30:21,909 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1003 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:21,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1065 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:30:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6483 states. [2022-07-19 20:30:22,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6483 to 4821. [2022-07-19 20:30:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4391 states have (on average 1.5360965611478024) internal successors, (6745), 4408 states have internal predecessors, (6745), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-19 20:30:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 7464 transitions. [2022-07-19 20:30:22,326 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 7464 transitions. Word has length 145 [2022-07-19 20:30:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:22,327 INFO L495 AbstractCegarLoop]: Abstraction has 4821 states and 7464 transitions. [2022-07-19 20:30:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 7464 transitions. [2022-07-19 20:30:22,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:22,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:22,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:22,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:30:22,331 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1750597616, now seen corresponding path program 1 times [2022-07-19 20:30:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:22,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110341967] [2022-07-19 20:30:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:22,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:22,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:22,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110341967] [2022-07-19 20:30:22,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110341967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:22,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:22,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:22,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491462720] [2022-07-19 20:30:22,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:22,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:22,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:22,458 INFO L87 Difference]: Start difference. First operand 4821 states and 7464 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:25,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:25,864 INFO L93 Difference]: Finished difference Result 19061 states and 29752 transitions. [2022-07-19 20:30:25,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:30:25,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:25,907 INFO L225 Difference]: With dead ends: 19061 [2022-07-19 20:30:25,908 INFO L226 Difference]: Without dead ends: 14258 [2022-07-19 20:30:25,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:30:25,925 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1521 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2213 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:30:25,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-07-19 20:30:26,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 9272. [2022-07-19 20:30:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 8458 states have (on average 1.5340506029794279) internal successors, (12975), 8491 states have internal predecessors, (12975), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2022-07-19 20:30:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 14416 transitions. [2022-07-19 20:30:26,751 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 14416 transitions. Word has length 145 [2022-07-19 20:30:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:26,751 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 14416 transitions. [2022-07-19 20:30:26,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 14416 transitions. [2022-07-19 20:30:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:26,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:26,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:30:26,759 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -542483410, now seen corresponding path program 1 times [2022-07-19 20:30:26,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:26,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993515654] [2022-07-19 20:30:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993515654] [2022-07-19 20:30:26,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993515654] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:26,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:26,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535567403] [2022-07-19 20:30:26,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:26,897 INFO L87 Difference]: Start difference. First operand 9272 states and 14416 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:32,095 INFO L93 Difference]: Finished difference Result 36550 states and 57266 transitions. [2022-07-19 20:30:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:30:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:32,206 INFO L225 Difference]: With dead ends: 36550 [2022-07-19 20:30:32,206 INFO L226 Difference]: Without dead ends: 27296 [2022-07-19 20:30:32,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:30:32,239 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1264 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:32,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2336 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:30:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-07-19 20:30:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 18233. [2022-07-19 20:30:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18233 states, 16667 states have (on average 1.5341093178136438) internal successors, (25569), 16732 states have internal predecessors, (25569), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2022-07-19 20:30:34,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18233 states to 18233 states and 28584 transitions. [2022-07-19 20:30:34,006 INFO L78 Accepts]: Start accepts. Automaton has 18233 states and 28584 transitions. Word has length 145 [2022-07-19 20:30:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:34,007 INFO L495 AbstractCegarLoop]: Abstraction has 18233 states and 28584 transitions. [2022-07-19 20:30:34,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:34,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18233 states and 28584 transitions. [2022-07-19 20:30:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:34,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:34,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:34,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:30:34,019 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:34,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1184661552, now seen corresponding path program 1 times [2022-07-19 20:30:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:34,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046974706] [2022-07-19 20:30:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:34,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046974706] [2022-07-19 20:30:34,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046974706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:34,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:34,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789442243] [2022-07-19 20:30:34,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:34,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:34,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:34,138 INFO L87 Difference]: Start difference. First operand 18233 states and 28584 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:42,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:42,099 INFO L93 Difference]: Finished difference Result 71141 states and 112344 transitions. [2022-07-19 20:30:42,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:30:42,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:30:42,336 INFO L225 Difference]: With dead ends: 71141 [2022-07-19 20:30:42,336 INFO L226 Difference]: Without dead ends: 52926 [2022-07-19 20:30:42,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:30:42,402 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 1442 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 2383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:30:42,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2207 Invalid, 2383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 20:30:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52926 states. [2022-07-19 20:30:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52926 to 36122. [2022-07-19 20:30:45,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36122 states, 33084 states have (on average 1.5350924918389555) internal successors, (50787), 33213 states have internal predecessors, (50787), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2022-07-19 20:30:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36122 states to 36122 states and 57372 transitions. [2022-07-19 20:30:45,601 INFO L78 Accepts]: Start accepts. Automaton has 36122 states and 57372 transitions. Word has length 145 [2022-07-19 20:30:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:30:45,601 INFO L495 AbstractCegarLoop]: Abstraction has 36122 states and 57372 transitions. [2022-07-19 20:30:45,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 36122 states and 57372 transitions. [2022-07-19 20:30:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:30:45,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:30:45,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:30:45,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:30:45,624 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:30:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:30:45,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1656017902, now seen corresponding path program 1 times [2022-07-19 20:30:45,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:30:45,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894842339] [2022-07-19 20:30:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:30:45,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:30:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:30:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:30:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:30:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:30:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:30:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:30:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:30:45,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:30:45,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894842339] [2022-07-19 20:30:45,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894842339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:30:45,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:30:45,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:30:45,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904460435] [2022-07-19 20:30:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:30:45,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:30:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:30:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:30:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:30:45,726 INFO L87 Difference]: Start difference. First operand 36122 states and 57372 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:30:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:30:59,733 INFO L93 Difference]: Finished difference Result 139140 states and 222558 transitions. [2022-07-19 20:30:59,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:30:59,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:30:59,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:00,198 INFO L225 Difference]: With dead ends: 139140 [2022-07-19 20:31:00,198 INFO L226 Difference]: Without dead ends: 103036 [2022-07-19 20:31:00,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:31:00,317 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1242 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:00,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 2294 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:31:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103036 states. [2022-07-19 20:31:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103036 to 71835. [2022-07-19 20:31:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71835 states, 65917 states have (on average 1.5365535446091296) internal successors, (101285), 66174 states have internal predecessors, (101285), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2022-07-19 20:31:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71835 states to 71835 states and 116340 transitions. [2022-07-19 20:31:07,373 INFO L78 Accepts]: Start accepts. Automaton has 71835 states and 116340 transitions. Word has length 145 [2022-07-19 20:31:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:31:07,373 INFO L495 AbstractCegarLoop]: Abstraction has 71835 states and 116340 transitions. [2022-07-19 20:31:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:31:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 71835 states and 116340 transitions. [2022-07-19 20:31:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:31:07,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:31:07,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:31:07,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:31:07,411 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:31:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:31:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash 8654960, now seen corresponding path program 1 times [2022-07-19 20:31:07,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:31:07,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081679311] [2022-07-19 20:31:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:31:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:31:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:31:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 20:31:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 20:31:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:31:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 20:31:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:31:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:31:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:31:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081679311] [2022-07-19 20:31:07,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081679311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:31:07,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:31:07,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:31:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294968044] [2022-07-19 20:31:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:31:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:31:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:31:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:31:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:31:07,529 INFO L87 Difference]: Start difference. First operand 71835 states and 116340 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-19 20:31:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:31:33,188 INFO L93 Difference]: Finished difference Result 272771 states and 445044 transitions. [2022-07-19 20:31:33,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:31:33,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-19 20:31:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:31:33,950 INFO L225 Difference]: With dead ends: 272771 [2022-07-19 20:31:33,950 INFO L226 Difference]: Without dead ends: 200954 [2022-07-19 20:31:34,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:31:34,246 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1424 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:31:34,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1534 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:31:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200954 states.