./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:03:28,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:03:28,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:03:28,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:03:28,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:03:28,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:03:28,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:03:28,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:03:28,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:03:28,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:03:28,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:03:28,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:03:28,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:03:28,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:03:28,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:03:28,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:03:28,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:03:28,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:03:28,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:03:28,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:03:28,260 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:03:28,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:03:28,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:03:28,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:03:28,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:03:28,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:03:28,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:03:28,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:03:28,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:03:28,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:03:28,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:03:28,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:03:28,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:03:28,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:03:28,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:03:28,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:03:28,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:03:28,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:03:28,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:03:28,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:03:28,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:03:28,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:03:28,282 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:03:28,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:03:28,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:03:28,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:03:28,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:03:28,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:03:28,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:03:28,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:03:28,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:03:28,310 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:03:28,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:03:28,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:03:28,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:03:28,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:03:28,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:03:28,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:03:28,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:03:28,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:03:28,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:03:28,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:03:28,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:03:28,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:03:28,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:03:28,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:03:28,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:03:28,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:28,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:03:28,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:03:28,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:03:28,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:03:28,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:03:28,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:03:28,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:03:28,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:03:28,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2022-07-21 08:03:28,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:03:28,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:03:28,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:03:28,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:03:28,609 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:03:28,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-21 08:03:28,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44c01ea2/267e00f1711a4d64b26b004dc638b7af/FLAGb7412f023 [2022-07-21 08:03:29,005 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:03:29,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-21 08:03:29,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44c01ea2/267e00f1711a4d64b26b004dc638b7af/FLAGb7412f023 [2022-07-21 08:03:29,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b44c01ea2/267e00f1711a4d64b26b004dc638b7af [2022-07-21 08:03:29,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:03:29,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:03:29,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:29,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:03:29,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:03:29,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68cc29c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29, skipping insertion in model container [2022-07-21 08:03:29,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:03:29,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:03:29,609 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.11.cil-2.c[913,926] [2022-07-21 08:03:29,668 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.11.cil-2.c[5977,5990] [2022-07-21 08:03:29,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:29,785 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:03:29,801 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.11.cil-2.c[913,926] [2022-07-21 08:03:29,812 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.11.cil-2.c[5977,5990] [2022-07-21 08:03:29,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:29,884 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:03:29,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29 WrapperNode [2022-07-21 08:03:29,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:29,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:29,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:03:29,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:03:29,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,958 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 997 [2022-07-21 08:03:29,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:29,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:03:29,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:03:29,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:03:29,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:29,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:30,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:30,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:30,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:03:30,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:03:30,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:03:30,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:03:30,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (1/1) ... [2022-07-21 08:03:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:30,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:03:30,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:03:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:03:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:03:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-21 08:03:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-21 08:03:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:03:30,068 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:03:30,068 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:03:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:03:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:03:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:03:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:03:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:03:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:03:30,069 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:03:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:03:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:03:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:03:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:03:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:03:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:03:30,070 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:03:30,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:03:30,278 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:03:30,279 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:03:30,878 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:03:30,891 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:03:30,891 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-21 08:03:30,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:30 BoogieIcfgContainer [2022-07-21 08:03:30,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:03:30,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:03:30,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:03:30,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:03:30,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:03:29" (1/3) ... [2022-07-21 08:03:30,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e2f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:30, skipping insertion in model container [2022-07-21 08:03:30,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:29" (2/3) ... [2022-07-21 08:03:30,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e2f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:30, skipping insertion in model container [2022-07-21 08:03:30,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:30" (3/3) ... [2022-07-21 08:03:30,899 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-21 08:03:30,913 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:03:30,913 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:03:30,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:03:30,976 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@23227547, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57e7629d [2022-07-21 08:03:30,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:03:30,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-21 08:03:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:03:31,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:31,005 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] [2022-07-21 08:03:31,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1865263090, now seen corresponding path program 1 times [2022-07-21 08:03:31,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:31,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151556726] [2022-07-21 08:03:31,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:03:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:31,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151556726] [2022-07-21 08:03:31,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151556726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:31,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:31,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833199740] [2022-07-21 08:03:31,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:31,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:31,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:31,261 INFO L87 Difference]: Start difference. First operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) 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) [2022-07-21 08:03:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:31,483 INFO L93 Difference]: Finished difference Result 904 states and 1464 transitions. [2022-07-21 08:03:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:31,485 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 [2022-07-21 08:03:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:31,504 INFO L225 Difference]: With dead ends: 904 [2022-07-21 08:03:31,504 INFO L226 Difference]: Without dead ends: 489 [2022-07-21 08:03:31,509 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 [2022-07-21 08:03:31,511 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 884 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:31,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1061 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-21 08:03:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 483. [2022-07-21 08:03:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 435 states have (on average 1.5264367816091955) internal successors, (664), 439 states have internal predecessors, (664), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-07-21 08:03:31,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2022-07-21 08:03:31,570 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 44 [2022-07-21 08:03:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:31,570 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2022-07-21 08:03:31,571 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) [2022-07-21 08:03:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2022-07-21 08:03:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:31,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:31,573 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] [2022-07-21 08:03:31,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:03:31,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1076469852, now seen corresponding path program 1 times [2022-07-21 08:03:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:31,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150029851] [2022-07-21 08:03:31,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:31,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:31,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150029851] [2022-07-21 08:03:31,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150029851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:31,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:31,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:31,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315263042] [2022-07-21 08:03:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:31,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:31,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:31,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:31,670 INFO L87 Difference]: Start difference. First operand 483 states and 738 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) [2022-07-21 08:03:32,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:32,045 INFO L93 Difference]: Finished difference Result 731 states and 1078 transitions. [2022-07-21 08:03:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:32,045 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 [2022-07-21 08:03:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:32,049 INFO L225 Difference]: With dead ends: 731 [2022-07-21 08:03:32,050 INFO L226 Difference]: Without dead ends: 607 [2022-07-21 08:03:32,050 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 [2022-07-21 08:03:32,051 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 348 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:32,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1368 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-07-21 08:03:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 550. [2022-07-21 08:03:32,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 496 states have (on average 1.5080645161290323) internal successors, (748), 500 states have internal predecessors, (748), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2022-07-21 08:03:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 828 transitions. [2022-07-21 08:03:32,095 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 828 transitions. Word has length 45 [2022-07-21 08:03:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 828 transitions. [2022-07-21 08:03:32,095 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) [2022-07-21 08:03:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 828 transitions. [2022-07-21 08:03:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:32,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:32,099 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] [2022-07-21 08:03:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:03:32,099 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1934139983, now seen corresponding path program 1 times [2022-07-21 08:03:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:32,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813889992] [2022-07-21 08:03:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813889992] [2022-07-21 08:03:32,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813889992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:32,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:32,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:32,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250763111] [2022-07-21 08:03:32,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:32,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:32,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:32,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:32,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:32,179 INFO L87 Difference]: Start difference. First operand 550 states and 828 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) [2022-07-21 08:03:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:32,340 INFO L93 Difference]: Finished difference Result 958 states and 1387 transitions. [2022-07-21 08:03:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:32,341 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 [2022-07-21 08:03:32,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:32,344 INFO L225 Difference]: With dead ends: 958 [2022-07-21 08:03:32,344 INFO L226 Difference]: Without dead ends: 767 [2022-07-21 08:03:32,345 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 [2022-07-21 08:03:32,346 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 893 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:32,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1062 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-07-21 08:03:32,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 715. [2022-07-21 08:03:32,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 642 states have (on average 1.4610591900311527) internal successors, (938), 649 states have internal predecessors, (938), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2022-07-21 08:03:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1046 transitions. [2022-07-21 08:03:32,383 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1046 transitions. Word has length 45 [2022-07-21 08:03:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:32,384 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1046 transitions. [2022-07-21 08:03:32,384 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) [2022-07-21 08:03:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1046 transitions. [2022-07-21 08:03:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 08:03:32,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:32,386 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] [2022-07-21 08:03:32,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:03:32,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:32,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -850776738, now seen corresponding path program 1 times [2022-07-21 08:03:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113201994] [2022-07-21 08:03:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:32,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:03:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:03:32,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:32,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113201994] [2022-07-21 08:03:32,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113201994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:32,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:32,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831058975] [2022-07-21 08:03:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:32,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:32,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:32,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:32,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:32,480 INFO L87 Difference]: Start difference. First operand 715 states and 1046 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) [2022-07-21 08:03:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:32,819 INFO L93 Difference]: Finished difference Result 1299 states and 1831 transitions. [2022-07-21 08:03:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:32,819 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 [2022-07-21 08:03:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:32,825 INFO L225 Difference]: With dead ends: 1299 [2022-07-21 08:03:32,825 INFO L226 Difference]: Without dead ends: 943 [2022-07-21 08:03:32,826 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 [2022-07-21 08:03:32,832 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 332 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:32,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1423 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:32,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-07-21 08:03:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 905. [2022-07-21 08:03:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 808 states have (on average 1.4084158415841583) internal successors, (1138), 817 states have internal predecessors, (1138), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2022-07-21 08:03:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1284 transitions. [2022-07-21 08:03:32,872 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1284 transitions. Word has length 62 [2022-07-21 08:03:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:32,874 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1284 transitions. [2022-07-21 08:03:32,874 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) [2022-07-21 08:03:32,874 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1284 transitions. [2022-07-21 08:03:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 08:03:32,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:32,876 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] [2022-07-21 08:03:32,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:03:32,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:32,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 33645861, now seen corresponding path program 1 times [2022-07-21 08:03:32,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:32,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413792175] [2022-07-21 08:03:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:32,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:03:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:03:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:32,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413792175] [2022-07-21 08:03:32,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413792175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:32,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:32,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462824406] [2022-07-21 08:03:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:32,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:32,930 INFO L87 Difference]: Start difference. First operand 905 states and 1284 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) [2022-07-21 08:03:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:33,052 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2022-07-21 08:03:33,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:33,053 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 [2022-07-21 08:03:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:33,056 INFO L225 Difference]: With dead ends: 1558 [2022-07-21 08:03:33,057 INFO L226 Difference]: Without dead ends: 1104 [2022-07-21 08:03:33,058 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 [2022-07-21 08:03:33,058 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 880 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:33,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1059 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:33,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-07-21 08:03:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1049. [2022-07-21 08:03:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 936 states have (on average 1.3771367521367521) internal successors, (1289), 947 states have internal predecessors, (1289), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-07-21 08:03:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1457 transitions. [2022-07-21 08:03:33,097 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1457 transitions. Word has length 67 [2022-07-21 08:03:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:33,097 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1457 transitions. [2022-07-21 08:03:33,098 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) [2022-07-21 08:03:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1457 transitions. [2022-07-21 08:03:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:03:33,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:33,100 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] [2022-07-21 08:03:33,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:03:33,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:33,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2088486643, now seen corresponding path program 1 times [2022-07-21 08:03:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:33,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686597650] [2022-07-21 08:03:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:33,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686597650] [2022-07-21 08:03:33,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686597650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008961941] [2022-07-21 08:03:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:33,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:33,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:33,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:03:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:03:33,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:33,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008961941] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:33,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:03:33,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-21 08:03:33,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734007369] [2022-07-21 08:03:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:33,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:33,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:33,400 INFO L87 Difference]: Start difference. First operand 1049 states and 1457 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) [2022-07-21 08:03:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:33,530 INFO L93 Difference]: Finished difference Result 1105 states and 1525 transitions. [2022-07-21 08:03:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:03:33,531 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 [2022-07-21 08:03:33,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:33,535 INFO L225 Difference]: With dead ends: 1105 [2022-07-21 08:03:33,535 INFO L226 Difference]: Without dead ends: 1102 [2022-07-21 08:03:33,535 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 [2022-07-21 08:03:33,536 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1181 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 739 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-07-21 08:03:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1048. [2022-07-21 08:03:33,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 936 states have (on average 1.375) internal successors, (1287), 946 states have internal predecessors, (1287), 70 states have call successors, (70), 35 states have call predecessors, (70), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-07-21 08:03:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1454 transitions. [2022-07-21 08:03:33,570 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1454 transitions. Word has length 68 [2022-07-21 08:03:33,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:33,570 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1454 transitions. [2022-07-21 08:03:33,570 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) [2022-07-21 08:03:33,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1454 transitions. [2022-07-21 08:03:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 08:03:33,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:33,572 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] [2022-07-21 08:03:33,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:33,791 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 [2022-07-21 08:03:33,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:33,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:33,792 INFO L85 PathProgramCache]: Analyzing trace with hash -319896280, now seen corresponding path program 1 times [2022-07-21 08:03:33,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:33,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015233891] [2022-07-21 08:03:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:33,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015233891] [2022-07-21 08:03:33,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015233891] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426674502] [2022-07-21 08:03:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:33,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:33,912 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) [2022-07-21 08:03:33,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:03:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:03:34,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:34,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:34,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426674502] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:03:34,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:03:34,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-21 08:03:34,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109089884] [2022-07-21 08:03:34,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:03:34,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:03:34,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:34,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:03:34,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:34,233 INFO L87 Difference]: Start difference. First operand 1048 states and 1454 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) [2022-07-21 08:03:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:35,436 INFO L93 Difference]: Finished difference Result 2748 states and 3674 transitions. [2022-07-21 08:03:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 08:03:35,437 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 [2022-07-21 08:03:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:35,479 INFO L225 Difference]: With dead ends: 2748 [2022-07-21 08:03:35,480 INFO L226 Difference]: Without dead ends: 2204 [2022-07-21 08:03:35,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 08:03:35,482 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1237 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:35,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 4019 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-07-21 08:03:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1437. [2022-07-21 08:03:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1286 states have (on average 1.3382581648522551) internal successors, (1721), 1304 states have internal predecessors, (1721), 90 states have call successors, (90), 49 states have call predecessors, (90), 59 states have return successors, (131), 84 states have call predecessors, (131), 89 states have call successors, (131) [2022-07-21 08:03:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1942 transitions. [2022-07-21 08:03:35,537 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1942 transitions. Word has length 69 [2022-07-21 08:03:35,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:35,537 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1942 transitions. [2022-07-21 08:03:35,537 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) [2022-07-21 08:03:35,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1942 transitions. [2022-07-21 08:03:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 08:03:35,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:35,539 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] [2022-07-21 08:03:35,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:35,758 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 [2022-07-21 08:03:35,758 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1470276952, now seen corresponding path program 1 times [2022-07-21 08:03:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:35,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783381118] [2022-07-21 08:03:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 08:03:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,816 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 08:03:35,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:35,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783381118] [2022-07-21 08:03:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783381118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:35,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476043447] [2022-07-21 08:03:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:35,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:35,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:35,832 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) [2022-07-21 08:03:35,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:03:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:03:35,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:35,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476043447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:35,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:35,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:35,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832181749] [2022-07-21 08:03:35,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:35,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:35,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:35,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:35,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:35,945 INFO L87 Difference]: Start difference. First operand 1437 states and 1942 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) [2022-07-21 08:03:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:35,996 INFO L93 Difference]: Finished difference Result 2160 states and 2880 transitions. [2022-07-21 08:03:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:35,997 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 [2022-07-21 08:03:35,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:36,002 INFO L225 Difference]: With dead ends: 2160 [2022-07-21 08:03:36,002 INFO L226 Difference]: Without dead ends: 1315 [2022-07-21 08:03:36,004 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 [2022-07-21 08:03:36,005 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 607 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 753 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 [2022-07-21 08:03:36,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 753 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-07-21 08:03:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1300. [2022-07-21 08:03:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1165 states have (on average 1.3416309012875536) internal successors, (1563), 1182 states have internal predecessors, (1563), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (117), 75 states have call predecessors, (117), 81 states have call successors, (117) [2022-07-21 08:03:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1762 transitions. [2022-07-21 08:03:36,049 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1762 transitions. Word has length 88 [2022-07-21 08:03:36,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:36,049 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1762 transitions. [2022-07-21 08:03:36,049 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) [2022-07-21 08:03:36,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1762 transitions. [2022-07-21 08:03:36,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 08:03:36,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:36,052 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] [2022-07-21 08:03:36,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:36,267 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 [2022-07-21 08:03:36,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash 852635580, now seen corresponding path program 1 times [2022-07-21 08:03:36,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855016098] [2022-07-21 08:03:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 08:03:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:03:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 08:03:36,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855016098] [2022-07-21 08:03:36,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855016098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:36,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445184594] [2022-07-21 08:03:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:36,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:36,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:36,336 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) [2022-07-21 08:03:36,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:03:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:03:36,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:03:36,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:36,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445184594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:36,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:36,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977510552] [2022-07-21 08:03:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:36,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:36,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:36,458 INFO L87 Difference]: Start difference. First operand 1300 states and 1762 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) [2022-07-21 08:03:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:36,509 INFO L93 Difference]: Finished difference Result 1679 states and 2230 transitions. [2022-07-21 08:03:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:36,510 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 [2022-07-21 08:03:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:36,511 INFO L225 Difference]: With dead ends: 1679 [2022-07-21 08:03:36,512 INFO L226 Difference]: Without dead ends: 353 [2022-07-21 08:03:36,514 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 [2022-07-21 08:03:36,514 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 62 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1314 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 [2022-07-21 08:03:36,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-21 08:03:36,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-07-21 08:03:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.573208722741433) internal successors, (505), 322 states have internal predecessors, (505), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 08:03:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 555 transitions. [2022-07-21 08:03:36,525 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 555 transitions. Word has length 103 [2022-07-21 08:03:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:36,526 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 555 transitions. [2022-07-21 08:03:36,526 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) [2022-07-21 08:03:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 555 transitions. [2022-07-21 08:03:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:36,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:36,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:36,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:36,745 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 [2022-07-21 08:03:36,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -971993518, now seen corresponding path program 1 times [2022-07-21 08:03:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:36,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140823484] [2022-07-21 08:03:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140823484] [2022-07-21 08:03:36,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140823484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:36,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:36,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703263853] [2022-07-21 08:03:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:36,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:36,855 INFO L87 Difference]: Start difference. First operand 353 states and 555 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:37,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:37,797 INFO L93 Difference]: Finished difference Result 827 states and 1321 transitions. [2022-07-21 08:03:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:37,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:37,800 INFO L225 Difference]: With dead ends: 827 [2022-07-21 08:03:37,800 INFO L226 Difference]: Without dead ends: 484 [2022-07-21 08:03:37,801 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 [2022-07-21 08:03:37,801 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 952 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:37,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 977 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-21 08:03:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-07-21 08:03:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5700934579439252) internal successors, (504), 322 states have internal predecessors, (504), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 08:03:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 554 transitions. [2022-07-21 08:03:37,814 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 554 transitions. Word has length 167 [2022-07-21 08:03:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:37,815 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 554 transitions. [2022-07-21 08:03:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 554 transitions. [2022-07-21 08:03:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:37,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:37,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:37,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:03:37,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:37,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1952948332, now seen corresponding path program 1 times [2022-07-21 08:03:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:37,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209171604] [2022-07-21 08:03:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:37,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:37,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:37,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209171604] [2022-07-21 08:03:37,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209171604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:37,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:37,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:37,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882187799] [2022-07-21 08:03:37,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:37,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:37,909 INFO L87 Difference]: Start difference. First operand 353 states and 554 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:38,830 INFO L93 Difference]: Finished difference Result 819 states and 1304 transitions. [2022-07-21 08:03:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:38,832 INFO L225 Difference]: With dead ends: 819 [2022-07-21 08:03:38,832 INFO L226 Difference]: Without dead ends: 484 [2022-07-21 08:03:38,833 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 [2022-07-21 08:03:38,834 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 943 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:38,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 975 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-21 08:03:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-07-21 08:03:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5669781931464175) internal successors, (503), 322 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 08:03:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 553 transitions. [2022-07-21 08:03:38,852 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 553 transitions. Word has length 167 [2022-07-21 08:03:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:38,853 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 553 transitions. [2022-07-21 08:03:38,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 553 transitions. [2022-07-21 08:03:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:38,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:38,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:03:38,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:38,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1688300842, now seen corresponding path program 1 times [2022-07-21 08:03:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:38,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623764081] [2022-07-21 08:03:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:38,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623764081] [2022-07-21 08:03:38,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623764081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:38,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:38,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:03:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60206431] [2022-07-21 08:03:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:03:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:38,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:03:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:03:38,967 INFO L87 Difference]: Start difference. First operand 353 states and 553 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:40,838 INFO L93 Difference]: Finished difference Result 1297 states and 2080 transitions. [2022-07-21 08:03:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:03:40,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:40,842 INFO L225 Difference]: With dead ends: 1297 [2022-07-21 08:03:40,842 INFO L226 Difference]: Without dead ends: 964 [2022-07-21 08:03:40,843 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 [2022-07-21 08:03:40,843 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1437 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:40,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1540 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:03:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2022-07-21 08:03:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2022-07-21 08:03:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 644 states have (on average 1.5807453416149069) internal successors, (1018), 646 states have internal predecessors, (1018), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-21 08:03:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1111 transitions. [2022-07-21 08:03:40,876 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1111 transitions. Word has length 167 [2022-07-21 08:03:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:40,876 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1111 transitions. [2022-07-21 08:03:40,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1111 transitions. [2022-07-21 08:03:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:40,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:40,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:40,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:03:40,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:40,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash -688714662, now seen corresponding path program 1 times [2022-07-21 08:03:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:40,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172864635] [2022-07-21 08:03:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:40,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:41,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:41,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172864635] [2022-07-21 08:03:41,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172864635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:41,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:41,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:41,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357041860] [2022-07-21 08:03:41,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:41,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:41,015 INFO L87 Difference]: Start difference. First operand 703 states and 1111 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:43,552 INFO L93 Difference]: Finished difference Result 2145 states and 3445 transitions. [2022-07-21 08:03:43,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:43,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:43,558 INFO L225 Difference]: With dead ends: 2145 [2022-07-21 08:03:43,558 INFO L226 Difference]: Without dead ends: 1462 [2022-07-21 08:03:43,560 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 [2022-07-21 08:03:43,560 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1467 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:43,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 2680 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:03:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-07-21 08:03:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1028. [2022-07-21 08:03:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5743099787685775) internal successors, (1483), 945 states have internal predecessors, (1483), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-21 08:03:43,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1618 transitions. [2022-07-21 08:03:43,643 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1618 transitions. Word has length 167 [2022-07-21 08:03:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:43,643 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1618 transitions. [2022-07-21 08:03:43,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1618 transitions. [2022-07-21 08:03:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:43,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:43,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:43,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:03:43,645 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:43,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash -350427112, now seen corresponding path program 1 times [2022-07-21 08:03:43,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:43,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268561385] [2022-07-21 08:03:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:43,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:43,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268561385] [2022-07-21 08:03:43,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268561385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:43,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:43,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:43,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198019974] [2022-07-21 08:03:43,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:43,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:43,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:43,761 INFO L87 Difference]: Start difference. First operand 1028 states and 1618 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:44,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:44,846 INFO L93 Difference]: Finished difference Result 2486 states and 3990 transitions. [2022-07-21 08:03:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:44,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:44,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:44,851 INFO L225 Difference]: With dead ends: 2486 [2022-07-21 08:03:44,851 INFO L226 Difference]: Without dead ends: 1478 [2022-07-21 08:03:44,853 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 [2022-07-21 08:03:44,853 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1118 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:44,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1422 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-21 08:03:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1028. [2022-07-21 08:03:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5711252653927814) internal successors, (1480), 945 states have internal predecessors, (1480), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-21 08:03:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1615 transitions. [2022-07-21 08:03:44,908 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1615 transitions. Word has length 167 [2022-07-21 08:03:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:44,908 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1615 transitions. [2022-07-21 08:03:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1615 transitions. [2022-07-21 08:03:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:44,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:44,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:44,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:03:44,910 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash -890856618, now seen corresponding path program 1 times [2022-07-21 08:03:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009908102] [2022-07-21 08:03:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:44,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:45,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009908102] [2022-07-21 08:03:45,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009908102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:45,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:45,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480973057] [2022-07-21 08:03:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:45,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:45,006 INFO L87 Difference]: Start difference. First operand 1028 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:46,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:46,145 INFO L93 Difference]: Finished difference Result 2482 states and 3973 transitions. [2022-07-21 08:03:46,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:46,145 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:46,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:46,150 INFO L225 Difference]: With dead ends: 2482 [2022-07-21 08:03:46,150 INFO L226 Difference]: Without dead ends: 1474 [2022-07-21 08:03:46,152 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 [2022-07-21 08:03:46,152 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1188 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1279 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-07-21 08:03:46,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1028. [2022-07-21 08:03:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5679405520169851) internal successors, (1477), 945 states have internal predecessors, (1477), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-21 08:03:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1612 transitions. [2022-07-21 08:03:46,222 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1612 transitions. Word has length 167 [2022-07-21 08:03:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:46,222 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1612 transitions. [2022-07-21 08:03:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1612 transitions. [2022-07-21 08:03:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:46,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:46,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:03:46,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1046837160, now seen corresponding path program 1 times [2022-07-21 08:03:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:46,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211315810] [2022-07-21 08:03:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:46,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:46,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211315810] [2022-07-21 08:03:46,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211315810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:46,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:46,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:46,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805414222] [2022-07-21 08:03:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:46,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:46,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:46,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:46,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:46,360 INFO L87 Difference]: Start difference. First operand 1028 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:48,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:48,745 INFO L93 Difference]: Finished difference Result 3386 states and 5396 transitions. [2022-07-21 08:03:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:48,753 INFO L225 Difference]: With dead ends: 3386 [2022-07-21 08:03:48,753 INFO L226 Difference]: Without dead ends: 2378 [2022-07-21 08:03:48,756 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 [2022-07-21 08:03:48,756 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1447 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:48,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2656 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:03:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-07-21 08:03:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1688. [2022-07-21 08:03:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.562015503875969) internal successors, (2418), 1553 states have internal predecessors, (2418), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-21 08:03:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2641 transitions. [2022-07-21 08:03:48,881 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2641 transitions. Word has length 167 [2022-07-21 08:03:48,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:48,882 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2641 transitions. [2022-07-21 08:03:48,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2641 transitions. [2022-07-21 08:03:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:48,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:48,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:03:48,884 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash -636226794, now seen corresponding path program 1 times [2022-07-21 08:03:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:48,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647222242] [2022-07-21 08:03:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:48,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647222242] [2022-07-21 08:03:48,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647222242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:48,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:48,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259227266] [2022-07-21 08:03:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:48,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:48,995 INFO L87 Difference]: Start difference. First operand 1688 states and 2641 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:50,339 INFO L93 Difference]: Finished difference Result 4034 states and 6414 transitions. [2022-07-21 08:03:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:50,347 INFO L225 Difference]: With dead ends: 4034 [2022-07-21 08:03:50,347 INFO L226 Difference]: Without dead ends: 2366 [2022-07-21 08:03:50,349 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 [2022-07-21 08:03:50,350 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1033 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:50,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1453 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:03:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-07-21 08:03:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1688. [2022-07-21 08:03:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.5587855297157622) internal successors, (2413), 1553 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-21 08:03:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2636 transitions. [2022-07-21 08:03:50,450 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2636 transitions. Word has length 167 [2022-07-21 08:03:50,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:50,450 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2636 transitions. [2022-07-21 08:03:50,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2636 transitions. [2022-07-21 08:03:50,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:50,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:50,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:50,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:03:50,453 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1870870680, now seen corresponding path program 1 times [2022-07-21 08:03:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:50,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86194175] [2022-07-21 08:03:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:50,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86194175] [2022-07-21 08:03:50,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86194175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:50,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:50,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086164788] [2022-07-21 08:03:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:50,557 INFO L87 Difference]: Start difference. First operand 1688 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:53,249 INFO L93 Difference]: Finished difference Result 5790 states and 9161 transitions. [2022-07-21 08:03:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:53,262 INFO L225 Difference]: With dead ends: 5790 [2022-07-21 08:03:53,262 INFO L226 Difference]: Without dead ends: 4122 [2022-07-21 08:03:53,265 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 [2022-07-21 08:03:53,265 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1439 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:53,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 2645 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 08:03:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2022-07-21 08:03:53,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3010. [2022-07-21 08:03:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.552860246198407) internal successors, (4289), 2771 states have internal predecessors, (4289), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-21 08:03:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4694 transitions. [2022-07-21 08:03:53,461 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4694 transitions. Word has length 167 [2022-07-21 08:03:53,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:53,461 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4694 transitions. [2022-07-21 08:03:53,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4694 transitions. [2022-07-21 08:03:53,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:53,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:53,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:03:53,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash -265012522, now seen corresponding path program 1 times [2022-07-21 08:03:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:53,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976778958] [2022-07-21 08:03:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:53,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:53,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:53,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976778958] [2022-07-21 08:03:53,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976778958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:53,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:53,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:53,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606384079] [2022-07-21 08:03:53,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:53,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:53,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:53,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:53,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:53,584 INFO L87 Difference]: Start difference. First operand 3010 states and 4694 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:54,839 INFO L93 Difference]: Finished difference Result 7130 states and 11281 transitions. [2022-07-21 08:03:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:54,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:54,860 INFO L225 Difference]: With dead ends: 7130 [2022-07-21 08:03:54,860 INFO L226 Difference]: Without dead ends: 4140 [2022-07-21 08:03:54,866 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 [2022-07-21 08:03:54,866 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1186 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:54,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 1265 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-07-21 08:03:55,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3010. [2022-07-21 08:03:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.549601737871108) internal successors, (4280), 2771 states have internal predecessors, (4280), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-21 08:03:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4685 transitions. [2022-07-21 08:03:55,095 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4685 transitions. Word has length 167 [2022-07-21 08:03:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:55,096 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4685 transitions. [2022-07-21 08:03:55,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4685 transitions. [2022-07-21 08:03:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:55,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:55,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:55,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:03:55,098 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:55,099 INFO L85 PathProgramCache]: Analyzing trace with hash -195364648, now seen corresponding path program 1 times [2022-07-21 08:03:55,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:55,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968425701] [2022-07-21 08:03:55,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:55,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:55,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:55,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968425701] [2022-07-21 08:03:55,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968425701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:55,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:55,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:55,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917906448] [2022-07-21 08:03:55,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:55,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:55,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:55,201 INFO L87 Difference]: Start difference. First operand 3010 states and 4685 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:57,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:57,997 INFO L93 Difference]: Finished difference Result 10596 states and 16685 transitions. [2022-07-21 08:03:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:57,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:03:57,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:58,025 INFO L225 Difference]: With dead ends: 10596 [2022-07-21 08:03:58,025 INFO L226 Difference]: Without dead ends: 7606 [2022-07-21 08:03:58,033 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 [2022-07-21 08:03:58,033 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1434 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:58,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 2632 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:03:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2022-07-21 08:03:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5668. [2022-07-21 08:03:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5449654112221367) internal successors, (8040), 5221 states have internal predecessors, (8040), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-21 08:03:58,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8827 transitions. [2022-07-21 08:03:58,453 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8827 transitions. Word has length 167 [2022-07-21 08:03:58,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:58,453 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8827 transitions. [2022-07-21 08:03:58,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:58,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8827 transitions. [2022-07-21 08:03:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:03:58,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:58,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:03:58,457 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 222524054, now seen corresponding path program 1 times [2022-07-21 08:03:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:58,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837066893] [2022-07-21 08:03:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:03:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:03:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:03:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:58,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:58,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837066893] [2022-07-21 08:03:58,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837066893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:58,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:58,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728984458] [2022-07-21 08:03:58,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:58,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:58,556 INFO L87 Difference]: Start difference. First operand 5668 states and 8827 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:00,257 INFO L93 Difference]: Finished difference Result 13304 states and 20996 transitions. [2022-07-21 08:04:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:04:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:00,298 INFO L225 Difference]: With dead ends: 13304 [2022-07-21 08:04:00,311 INFO L226 Difference]: Without dead ends: 7656 [2022-07-21 08:04:00,337 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 [2022-07-21 08:04:00,337 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 1236 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:00,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1228 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:04:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2022-07-21 08:04:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5668. [2022-07-21 08:04:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5416986933128363) internal successors, (8023), 5221 states have internal predecessors, (8023), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-21 08:04:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8810 transitions. [2022-07-21 08:04:00,816 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8810 transitions. Word has length 167 [2022-07-21 08:04:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8810 transitions. [2022-07-21 08:04:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8810 transitions. [2022-07-21 08:04:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:04:00,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:00,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:00,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:04:00,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:00,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1394916396, now seen corresponding path program 1 times [2022-07-21 08:04:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:00,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129085880] [2022-07-21 08:04:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:00,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:04:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:04:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:04:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:04:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:00,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129085880] [2022-07-21 08:04:00,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129085880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:00,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:00,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76921574] [2022-07-21 08:04:00,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:00,946 INFO L87 Difference]: Start difference. First operand 5668 states and 8810 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:02,723 INFO L93 Difference]: Finished difference Result 13286 states and 20909 transitions. [2022-07-21 08:04:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:04:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:02,742 INFO L225 Difference]: With dead ends: 13286 [2022-07-21 08:04:02,743 INFO L226 Difference]: Without dead ends: 7638 [2022-07-21 08:04:02,755 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 [2022-07-21 08:04:02,756 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1028 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:02,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1429 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:04:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2022-07-21 08:04:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 5668. [2022-07-21 08:04:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5384319754035358) internal successors, (8006), 5221 states have internal predecessors, (8006), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-21 08:04:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8793 transitions. [2022-07-21 08:04:03,214 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8793 transitions. Word has length 167 [2022-07-21 08:04:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:03,214 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8793 transitions. [2022-07-21 08:04:03,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8793 transitions. [2022-07-21 08:04:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:04:03,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:03,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:03,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:04:03,218 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1031449898, now seen corresponding path program 1 times [2022-07-21 08:04:03,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:03,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250330664] [2022-07-21 08:04:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:03,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:04:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:04:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:04:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:04:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:03,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250330664] [2022-07-21 08:04:03,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250330664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:03,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:03,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52429726] [2022-07-21 08:04:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:03,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:03,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:03,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:03,333 INFO L87 Difference]: Start difference. First operand 5668 states and 8793 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:08,035 INFO L93 Difference]: Finished difference Result 22590 states and 35327 transitions. [2022-07-21 08:04:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:08,074 INFO L225 Difference]: With dead ends: 22590 [2022-07-21 08:04:08,075 INFO L226 Difference]: Without dead ends: 16942 [2022-07-21 08:04:08,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:08,092 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 1517 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:08,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 2769 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 08:04:08,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-07-21 08:04:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 10920. [2022-07-21 08:04:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10040 states have (on average 1.5360557768924303) internal successors, (15422), 10073 states have internal predecessors, (15422), 649 states have call successors, (649), 198 states have call predecessors, (649), 230 states have return successors, (924), 680 states have call predecessors, (924), 649 states have call successors, (924) [2022-07-21 08:04:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 16995 transitions. [2022-07-21 08:04:09,171 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 16995 transitions. Word has length 167 [2022-07-21 08:04:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:09,171 INFO L495 AbstractCegarLoop]: Abstraction has 10920 states and 16995 transitions. [2022-07-21 08:04:09,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:09,172 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 16995 transitions. [2022-07-21 08:04:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:04:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:09,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:04:09,177 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash -742630508, now seen corresponding path program 1 times [2022-07-21 08:04:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:09,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388312153] [2022-07-21 08:04:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:04:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:04:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:04:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:04:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:09,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388312153] [2022-07-21 08:04:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388312153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:09,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:09,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463967180] [2022-07-21 08:04:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:09,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:09,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:09,274 INFO L87 Difference]: Start difference. First operand 10920 states and 16995 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:15,969 INFO L93 Difference]: Finished difference Result 43472 states and 68187 transitions. [2022-07-21 08:04:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:16,100 INFO L225 Difference]: With dead ends: 43472 [2022-07-21 08:04:16,100 INFO L226 Difference]: Without dead ends: 32572 [2022-07-21 08:04:16,127 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 [2022-07-21 08:04:16,128 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1783 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:16,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 2596 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:04:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2022-07-21 08:04:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 21481. [2022-07-21 08:04:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21481 states, 19785 states have (on average 1.5357088703563306) internal successors, (30384), 19850 states have internal predecessors, (30384), 1241 states have call successors, (1241), 390 states have call predecessors, (1241), 454 states have return successors, (2034), 1304 states have call predecessors, (2034), 1241 states have call successors, (2034) [2022-07-21 08:04:18,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21481 states to 21481 states and 33659 transitions. [2022-07-21 08:04:18,107 INFO L78 Accepts]: Start accepts. Automaton has 21481 states and 33659 transitions. Word has length 167 [2022-07-21 08:04:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:18,107 INFO L495 AbstractCegarLoop]: Abstraction has 21481 states and 33659 transitions. [2022-07-21 08:04:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 21481 states and 33659 transitions. [2022-07-21 08:04:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:04:18,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:18,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:18,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:04:18,115 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1287503082, now seen corresponding path program 1 times [2022-07-21 08:04:18,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:18,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582165599] [2022-07-21 08:04:18,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:18,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:04:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:04:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:04:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:04:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:18,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:18,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582165599] [2022-07-21 08:04:18,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582165599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:18,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:18,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531328514] [2022-07-21 08:04:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:18,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:18,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:18,218 INFO L87 Difference]: Start difference. First operand 21481 states and 33659 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:29,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:29,293 INFO L93 Difference]: Finished difference Result 84847 states and 133953 transitions. [2022-07-21 08:04:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:29,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:29,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:29,578 INFO L225 Difference]: With dead ends: 84847 [2022-07-21 08:04:29,578 INFO L226 Difference]: Without dead ends: 63386 [2022-07-21 08:04:29,628 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 [2022-07-21 08:04:29,628 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1496 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 3148 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:29,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2731 Invalid, 3233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3148 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 08:04:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63386 states. [2022-07-21 08:04:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63386 to 42570. [2022-07-21 08:04:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42570 states, 39274 states have (on average 1.5363344706421551) internal successors, (60338), 39403 states have internal predecessors, (60338), 2393 states have call successors, (2393), 774 states have call predecessors, (2393), 902 states have return successors, (4708), 2520 states have call predecessors, (4708), 2393 states have call successors, (4708) [2022-07-21 08:04:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42570 states to 42570 states and 67439 transitions. [2022-07-21 08:04:33,896 INFO L78 Accepts]: Start accepts. Automaton has 42570 states and 67439 transitions. Word has length 167 [2022-07-21 08:04:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 42570 states and 67439 transitions. [2022-07-21 08:04:33,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 42570 states and 67439 transitions. [2022-07-21 08:04:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:04:33,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:33,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:04:33,911 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:33,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash -612342956, now seen corresponding path program 1 times [2022-07-21 08:04:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:33,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966061814] [2022-07-21 08:04:33,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:33,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:04:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:04:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:04:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:04:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966061814] [2022-07-21 08:04:34,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966061814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:34,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:34,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146782370] [2022-07-21 08:04:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:34,008 INFO L87 Difference]: Start difference. First operand 42570 states and 67439 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:54,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:54,081 INFO L93 Difference]: Finished difference Result 166414 states and 265543 transitions. [2022-07-21 08:04:54,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:54,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:04:54,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:54,533 INFO L225 Difference]: With dead ends: 166414 [2022-07-21 08:04:54,534 INFO L226 Difference]: Without dead ends: 123864 [2022-07-21 08:04:54,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:54,662 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1703 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:54,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 2586 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:04:54,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123864 states. [2022-07-21 08:05:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123864 to 84683. [2022-07-21 08:05:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84683 states, 78251 states have (on average 1.5374627800283702) internal successors, (120308), 78508 states have internal predecessors, (120308), 4633 states have call successors, (4633), 1542 states have call predecessors, (4633), 1798 states have return successors, (11450), 4888 states have call predecessors, (11450), 4633 states have call successors, (11450) [2022-07-21 08:05:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84683 states to 84683 states and 136391 transitions. [2022-07-21 08:05:04,306 INFO L78 Accepts]: Start accepts. Automaton has 84683 states and 136391 transitions. Word has length 167 [2022-07-21 08:05:04,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:04,307 INFO L495 AbstractCegarLoop]: Abstraction has 84683 states and 136391 transitions. [2022-07-21 08:05:04,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 84683 states and 136391 transitions. [2022-07-21 08:05:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 08:05:04,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:04,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:04,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:05:04,340 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:04,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1560394922, now seen corresponding path program 1 times [2022-07-21 08:05:04,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:04,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671820849] [2022-07-21 08:05:04,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:05:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:05:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 08:05:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:04,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671820849] [2022-07-21 08:05:04,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671820849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:04,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:04,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53099044] [2022-07-21 08:05:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:04,450 INFO L87 Difference]: Start difference. First operand 84683 states and 136391 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:44,124 INFO L93 Difference]: Finished difference Result 327181 states and 530781 transitions. [2022-07-21 08:05:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:05:44,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-21 08:05:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:45,069 INFO L225 Difference]: With dead ends: 327181 [2022-07-21 08:05:45,070 INFO L226 Difference]: Without dead ends: 242518 [2022-07-21 08:05:45,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:05:45,278 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 1666 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:45,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 2579 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 08:05:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242518 states.