./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/Problem05_label46+token_ring.04.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 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:22:20,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:22:20,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:22:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:22:20,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:22:20,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:22:20,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:22:20,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:22:20,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:22:20,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:22:20,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:22:20,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:22:20,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:22:20,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:22:21,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:22:21,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:22:21,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:22:21,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:22:21,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:22:21,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:22:21,010 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:22:21,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:22:21,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:22:21,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:22:21,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:22:21,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:22:21,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:22:21,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:22:21,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:22:21,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:22:21,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:22:21,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:22:21,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:22:21,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:22:21,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:22:21,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:22:21,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:22:21,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:22:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:22:21,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:22:21,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:22:21,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:22:21,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:22:21,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:22:21,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:22:21,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:22:21,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:22:21,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:22:21,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:22:21,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:22:21,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:22:21,057 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:22:21,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:22:21,058 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:22:21,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:22:21,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:22:21,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:22:21,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:22:21,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:22:21,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:22:21,059 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:22:21,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:22:21,060 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:22:21,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:22:21,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:22:21,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:22:21,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:22:21,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:21,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:22:21,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:22:21,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:22:21,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d [2022-07-12 08:22:21,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:22:21,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:22:21,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:22:21,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:22:21,244 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:22:21,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2022-07-12 08:22:21,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739324ea4/c637c3a223e6479694bbe87b1fc1ef4b/FLAG46fae3a04 [2022-07-12 08:22:22,066 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:22:22,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2022-07-12 08:22:22,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739324ea4/c637c3a223e6479694bbe87b1fc1ef4b/FLAG46fae3a04 [2022-07-12 08:22:22,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/739324ea4/c637c3a223e6479694bbe87b1fc1ef4b [2022-07-12 08:22:22,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:22:22,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:22:22,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:22,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:22:22,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:22:22,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:22" (1/1) ... [2022-07-12 08:22:22,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2263c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:22, skipping insertion in model container [2022-07-12 08:22:22,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:22:22" (1/1) ... [2022-07-12 08:22:22,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:22:22,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:22:23,503 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/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2022-07-12 08:22:23,521 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/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2022-07-12 08:22:23,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:23,671 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:22:24,249 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/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2022-07-12 08:22:24,252 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/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2022-07-12 08:22:24,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:22:24,301 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:22:24,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24 WrapperNode [2022-07-12 08:22:24,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:22:24,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:24,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:22:24,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:22:24,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,691 INFO L137 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12740 [2022-07-12 08:22:24,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:22:24,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:22:24,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:22:24,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:22:24,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:24,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:25,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:25,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:25,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:22:25,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:22:25,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:22:25,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:22:25,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (1/1) ... [2022-07-12 08:22:25,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:22:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:25,197 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) [2022-07-12 08:22:25,206 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 [2022-07-12 08:22:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:22:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:22:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:22:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:22:25,263 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:22:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:22:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:22:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:22:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:22:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:22:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:22:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:22:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:22:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:22:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:22:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:22:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:22:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:22:25,430 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:22:25,440 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:22:30,553 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:22:30,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:22:30,578 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 08:22:30,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:30 BoogieIcfgContainer [2022-07-12 08:22:30,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:22:30,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:22:30,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:22:30,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:22:30,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:22:22" (1/3) ... [2022-07-12 08:22:30,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b75fcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:30, skipping insertion in model container [2022-07-12 08:22:30,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:22:24" (2/3) ... [2022-07-12 08:22:30,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b75fcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:22:30, skipping insertion in model container [2022-07-12 08:22:30,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:22:30" (3/3) ... [2022-07-12 08:22:30,605 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-2.c [2022-07-12 08:22:30,615 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:22:30,616 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:22:30,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:22:30,689 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@1cecaa02, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@606edf5c [2022-07-12 08:22:30,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:22:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 08:22:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:30,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:30,711 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] [2022-07-12 08:22:30,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1085362317, now seen corresponding path program 1 times [2022-07-12 08:22:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:30,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145210461] [2022-07-12 08:22:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:30,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:30,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145210461] [2022-07-12 08:22:30,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145210461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:30,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:30,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:22:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140512684] [2022-07-12 08:22:30,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:30,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:22:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:22:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:22:31,009 INFO L87 Difference]: Start difference. First operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:31,725 INFO L93 Difference]: Finished difference Result 4793 states and 8852 transitions. [2022-07-12 08:22:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:22:31,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:31,751 INFO L225 Difference]: With dead ends: 4793 [2022-07-12 08:22:31,751 INFO L226 Difference]: Without dead ends: 2359 [2022-07-12 08:22:31,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:31,763 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 448 mSDsluCounter, 12275 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 16602 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:31,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 16602 Invalid, 347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 08:22:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-07-12 08:22:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2305. [2022-07-12 08:22:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2277 states have (on average 1.8436539306104522) internal successors, (4198), 2280 states have internal predecessors, (4198), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-12 08:22:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4236 transitions. [2022-07-12 08:22:31,880 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4236 transitions. Word has length 91 [2022-07-12 08:22:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:31,881 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 4236 transitions. [2022-07-12 08:22:31,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4236 transitions. [2022-07-12 08:22:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:31,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:31,891 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] [2022-07-12 08:22:31,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:22:31,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1642847029, now seen corresponding path program 1 times [2022-07-12 08:22:31,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:31,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725738218] [2022-07-12 08:22:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:32,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:32,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725738218] [2022-07-12 08:22:32,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725738218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:32,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:32,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:22:32,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363803922] [2022-07-12 08:22:32,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:22:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:32,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:22:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:22:32,072 INFO L87 Difference]: Start difference. First operand 2305 states and 4236 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:33,089 INFO L93 Difference]: Finished difference Result 2759 states and 4947 transitions. [2022-07-12 08:22:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:22:33,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:33,103 INFO L225 Difference]: With dead ends: 2759 [2022-07-12 08:22:33,103 INFO L226 Difference]: Without dead ends: 2587 [2022-07-12 08:22:33,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:22:33,106 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4606 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 16630 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:22:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2022-07-12 08:22:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2478. [2022-07-12 08:22:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2430 states have (on average 1.825514403292181) internal successors, (4436), 2434 states have internal predecessors, (4436), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-12 08:22:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 4503 transitions. [2022-07-12 08:22:33,172 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 4503 transitions. Word has length 91 [2022-07-12 08:22:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:33,172 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 4503 transitions. [2022-07-12 08:22:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:33,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 4503 transitions. [2022-07-12 08:22:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:33,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:33,177 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] [2022-07-12 08:22:33,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:22:33,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash -411857615, now seen corresponding path program 1 times [2022-07-12 08:22:33,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:33,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141487846] [2022-07-12 08:22:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:33,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141487846] [2022-07-12 08:22:33,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141487846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:33,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532947696] [2022-07-12 08:22:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:33,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:33,322 INFO L87 Difference]: Start difference. First operand 2478 states and 4503 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:34,586 INFO L93 Difference]: Finished difference Result 3162 states and 5569 transitions. [2022-07-12 08:22:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:34,600 INFO L225 Difference]: With dead ends: 3162 [2022-07-12 08:22:34,600 INFO L226 Difference]: Without dead ends: 2817 [2022-07-12 08:22:34,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:34,603 INFO L413 NwaCegarLoop]: 4413 mSDtfsCounter, 4602 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 21176 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:34,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 21176 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:34,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-07-12 08:22:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2640. [2022-07-12 08:22:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2572 states have (on average 1.8087091757387248) internal successors, (4652), 2577 states have internal predecessors, (4652), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-12 08:22:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4747 transitions. [2022-07-12 08:22:34,745 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4747 transitions. Word has length 91 [2022-07-12 08:22:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:34,745 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 4747 transitions. [2022-07-12 08:22:34,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4747 transitions. [2022-07-12 08:22:34,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:34,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:34,747 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] [2022-07-12 08:22:34,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:22:34,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:34,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:34,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1322246835, now seen corresponding path program 1 times [2022-07-12 08:22:34,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:34,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135019953] [2022-07-12 08:22:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:34,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:34,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:34,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135019953] [2022-07-12 08:22:34,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135019953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:34,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:34,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841824834] [2022-07-12 08:22:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:34,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:34,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:34,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:34,867 INFO L87 Difference]: Start difference. First operand 2640 states and 4747 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:35,906 INFO L93 Difference]: Finished difference Result 3755 states and 6481 transitions. [2022-07-12 08:22:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:35,918 INFO L225 Difference]: With dead ends: 3755 [2022-07-12 08:22:35,919 INFO L226 Difference]: Without dead ends: 3248 [2022-07-12 08:22:35,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:35,922 INFO L413 NwaCegarLoop]: 4290 mSDtfsCounter, 4649 mSDsluCounter, 16457 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20747 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:35,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20747 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:22:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-07-12 08:22:35,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2965. [2022-07-12 08:22:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2857 states have (on average 1.7798389919495974) internal successors, (5085), 2864 states have internal predecessors, (5085), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-12 08:22:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5240 transitions. [2022-07-12 08:22:36,005 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5240 transitions. Word has length 91 [2022-07-12 08:22:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:36,005 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 5240 transitions. [2022-07-12 08:22:36,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5240 transitions. [2022-07-12 08:22:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:36,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:36,008 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] [2022-07-12 08:22:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:22:36,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2085497615, now seen corresponding path program 1 times [2022-07-12 08:22:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690995248] [2022-07-12 08:22:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:36,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:36,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:36,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690995248] [2022-07-12 08:22:36,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690995248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:36,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:36,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:36,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636014462] [2022-07-12 08:22:36,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:36,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:36,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:36,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:36,099 INFO L87 Difference]: Start difference. First operand 2965 states and 5240 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:37,300 INFO L93 Difference]: Finished difference Result 4900 states and 8238 transitions. [2022-07-12 08:22:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:22:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:37,320 INFO L225 Difference]: With dead ends: 4900 [2022-07-12 08:22:37,320 INFO L226 Difference]: Without dead ends: 4068 [2022-07-12 08:22:37,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:22:37,329 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 4597 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 21164 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:37,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 21164 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-07-12 08:22:37,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3616. [2022-07-12 08:22:37,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3428 states have (on average 1.735997666277713) internal successors, (5951), 3439 states have internal predecessors, (5951), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-12 08:22:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 6232 transitions. [2022-07-12 08:22:37,433 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 6232 transitions. Word has length 91 [2022-07-12 08:22:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 6232 transitions. [2022-07-12 08:22:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 6232 transitions. [2022-07-12 08:22:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:37,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:37,436 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] [2022-07-12 08:22:37,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:22:37,437 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 298427123, now seen corresponding path program 1 times [2022-07-12 08:22:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:37,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021385577] [2022-07-12 08:22:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:37,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021385577] [2022-07-12 08:22:37,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021385577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:37,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:37,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:37,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620941755] [2022-07-12 08:22:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:37,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:37,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:37,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:37,544 INFO L87 Difference]: Start difference. First operand 3616 states and 6232 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:38,791 INFO L93 Difference]: Finished difference Result 7702 states and 12526 transitions. [2022-07-12 08:22:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:38,840 INFO L225 Difference]: With dead ends: 7702 [2022-07-12 08:22:38,840 INFO L226 Difference]: Without dead ends: 6219 [2022-07-12 08:22:38,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:38,846 INFO L413 NwaCegarLoop]: 4391 mSDtfsCounter, 4766 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 21146 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:38,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 21146 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:22:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-07-12 08:22:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 4908. [2022-07-12 08:22:38,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4568 states have (on average 1.6836690017513134) internal successors, (7691), 4587 states have internal predecessors, (7691), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-07-12 08:22:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8226 transitions. [2022-07-12 08:22:38,985 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8226 transitions. Word has length 91 [2022-07-12 08:22:38,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:38,986 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 8226 transitions. [2022-07-12 08:22:38,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:38,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8226 transitions. [2022-07-12 08:22:38,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:38,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:38,989 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] [2022-07-12 08:22:38,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:22:38,989 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash -668923531, now seen corresponding path program 1 times [2022-07-12 08:22:38,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:38,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057268396] [2022-07-12 08:22:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:38,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:39,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057268396] [2022-07-12 08:22:39,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057268396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:39,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883104784] [2022-07-12 08:22:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:39,069 INFO L87 Difference]: Start difference. First operand 4908 states and 8226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:40,364 INFO L93 Difference]: Finished difference Result 12540 states and 20022 transitions. [2022-07-12 08:22:40,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:40,451 INFO L225 Difference]: With dead ends: 12540 [2022-07-12 08:22:40,451 INFO L226 Difference]: Without dead ends: 9765 [2022-07-12 08:22:40,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:40,478 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 4623 mSDsluCounter, 16752 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 21197 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:40,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 21197 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:22:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2022-07-12 08:22:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 7321. [2022-07-12 08:22:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 6685 states have (on average 1.6282722513089005) internal successors, (10885), 6720 states have internal predecessors, (10885), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-07-12 08:22:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 11966 transitions. [2022-07-12 08:22:40,750 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 11966 transitions. Word has length 91 [2022-07-12 08:22:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:40,752 INFO L495 AbstractCegarLoop]: Abstraction has 7321 states and 11966 transitions. [2022-07-12 08:22:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 11966 transitions. [2022-07-12 08:22:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:40,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:40,757 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] [2022-07-12 08:22:40,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:22:40,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1239534259, now seen corresponding path program 1 times [2022-07-12 08:22:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827200506] [2022-07-12 08:22:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827200506] [2022-07-12 08:22:40,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827200506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:40,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:40,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262705661] [2022-07-12 08:22:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:40,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:40,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:40,831 INFO L87 Difference]: Start difference. First operand 7321 states and 11966 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:42,376 INFO L93 Difference]: Finished difference Result 21439 states and 33876 transitions. [2022-07-12 08:22:42,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:42,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:42,436 INFO L225 Difference]: With dead ends: 21439 [2022-07-12 08:22:42,436 INFO L226 Difference]: Without dead ends: 16251 [2022-07-12 08:22:42,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:42,464 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 4686 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 21136 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:42,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 21136 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:22:42,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2022-07-12 08:22:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 12290. [2022-07-12 08:22:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12290 states, 11078 states have (on average 1.5864777035565987) internal successors, (17575), 11145 states have internal predecessors, (17575), 756 states have call successors, (756), 391 states have call predecessors, (756), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-07-12 08:22:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 19878 transitions. [2022-07-12 08:22:43,088 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 19878 transitions. Word has length 91 [2022-07-12 08:22:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:43,088 INFO L495 AbstractCegarLoop]: Abstraction has 12290 states and 19878 transitions. [2022-07-12 08:22:43,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 19878 transitions. [2022-07-12 08:22:43,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:43,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:43,096 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] [2022-07-12 08:22:43,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:22:43,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:43,097 INFO L85 PathProgramCache]: Analyzing trace with hash 746908085, now seen corresponding path program 1 times [2022-07-12 08:22:43,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:43,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092108397] [2022-07-12 08:22:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:43,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:43,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:43,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092108397] [2022-07-12 08:22:43,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092108397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:43,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:43,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440095514] [2022-07-12 08:22:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:43,161 INFO L87 Difference]: Start difference. First operand 12290 states and 19878 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:44,990 INFO L93 Difference]: Finished difference Result 39094 states and 62122 transitions. [2022-07-12 08:22:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:45,063 INFO L225 Difference]: With dead ends: 39094 [2022-07-12 08:22:45,064 INFO L226 Difference]: Without dead ends: 28937 [2022-07-12 08:22:45,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:45,095 INFO L413 NwaCegarLoop]: 4376 mSDtfsCounter, 4646 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:45,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4662 Valid, 21131 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:22:45,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2022-07-12 08:22:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22195. [2022-07-12 08:22:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19863 states have (on average 1.5599355585762473) internal successors, (30985), 19994 states have internal predecessors, (30985), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-07-12 08:22:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 36154 transitions. [2022-07-12 08:22:45,899 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 36154 transitions. Word has length 91 [2022-07-12 08:22:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:45,900 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 36154 transitions. [2022-07-12 08:22:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 36154 transitions. [2022-07-12 08:22:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:45,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:45,914 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] [2022-07-12 08:22:45,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:22:45,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1700848243, now seen corresponding path program 1 times [2022-07-12 08:22:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:45,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707258591] [2022-07-12 08:22:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:45,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:45,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707258591] [2022-07-12 08:22:45,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707258591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:45,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:45,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:22:45,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818479693] [2022-07-12 08:22:45,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:45,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:22:45,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:22:45,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:22:45,973 INFO L87 Difference]: Start difference. First operand 22195 states and 36154 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:48,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:48,938 INFO L93 Difference]: Finished difference Result 73149 states and 118600 transitions. [2022-07-12 08:22:48,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:22:48,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:48,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:49,299 INFO L225 Difference]: With dead ends: 73149 [2022-07-12 08:22:49,299 INFO L226 Difference]: Without dead ends: 53087 [2022-07-12 08:22:49,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:22:49,362 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4591 mSDsluCounter, 16740 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 21117 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:49,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 21117 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:22:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53087 states. [2022-07-12 08:22:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53087 to 41916. [2022-07-12 08:22:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41916 states, 37424 states have (on average 1.546039974348012) internal successors, (57859), 37683 states have internal predecessors, (57859), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-07-12 08:22:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41916 states to 41916 states and 70074 transitions. [2022-07-12 08:22:51,342 INFO L78 Accepts]: Start accepts. Automaton has 41916 states and 70074 transitions. Word has length 91 [2022-07-12 08:22:51,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:51,344 INFO L495 AbstractCegarLoop]: Abstraction has 41916 states and 70074 transitions. [2022-07-12 08:22:51,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:51,344 INFO L276 IsEmpty]: Start isEmpty. Operand 41916 states and 70074 transitions. [2022-07-12 08:22:51,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:22:51,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:51,374 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] [2022-07-12 08:22:51,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:22:51,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:51,376 INFO L85 PathProgramCache]: Analyzing trace with hash 484694517, now seen corresponding path program 1 times [2022-07-12 08:22:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:51,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409173174] [2022-07-12 08:22:51,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:22:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:51,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409173174] [2022-07-12 08:22:51,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409173174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:51,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:22:51,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:22:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357465018] [2022-07-12 08:22:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:22:51,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:51,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:22:51,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:22:51,449 INFO L87 Difference]: Start difference. First operand 41916 states and 70074 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:22:55,422 INFO L93 Difference]: Finished difference Result 114784 states and 187983 transitions. [2022-07-12 08:22:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:22:55,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:22:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:22:55,692 INFO L225 Difference]: With dead ends: 114784 [2022-07-12 08:22:55,692 INFO L226 Difference]: Without dead ends: 75002 [2022-07-12 08:22:55,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:22:55,795 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 4788 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 16926 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:22:55,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 16926 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:22:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75002 states. [2022-07-12 08:22:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75002 to 61307. [2022-07-12 08:22:58,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61307 states, 54491 states have (on average 1.5260501734231342) internal successors, (83156), 55007 states have internal predecessors, (83156), 4122 states have call successors, (4122), 2309 states have call predecessors, (4122), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-07-12 08:22:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61307 states to 61307 states and 100403 transitions. [2022-07-12 08:22:58,473 INFO L78 Accepts]: Start accepts. Automaton has 61307 states and 100403 transitions. Word has length 91 [2022-07-12 08:22:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:22:58,473 INFO L495 AbstractCegarLoop]: Abstraction has 61307 states and 100403 transitions. [2022-07-12 08:22:58,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:22:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 61307 states and 100403 transitions. [2022-07-12 08:22:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 08:22:58,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:22:58,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:22:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:22:58,590 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:22:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:22:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash -908289339, now seen corresponding path program 1 times [2022-07-12 08:22:58,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:22:58,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993279382] [2022-07-12 08:22:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:58,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:22:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:22:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:22:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:22:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:22:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:22:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:22:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:22:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:22:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:22:58,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:22:58,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993279382] [2022-07-12 08:22:58,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993279382] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:22:58,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995900228] [2022-07-12 08:22:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:22:58,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:22:58,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:22:58,901 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) [2022-07-12 08:22:58,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:22:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:22:59,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:22:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:22:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 08:22:59,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:22:59,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995900228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:22:59,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:22:59,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:22:59,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196054195] [2022-07-12 08:22:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:22:59,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:22:59,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:22:59,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:22:59,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:22:59,092 INFO L87 Difference]: Start difference. First operand 61307 states and 100403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:23:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:03,137 INFO L93 Difference]: Finished difference Result 178274 states and 292637 transitions. [2022-07-12 08:23:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:23:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-07-12 08:23:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:23:03,747 INFO L225 Difference]: With dead ends: 178274 [2022-07-12 08:23:03,748 INFO L226 Difference]: Without dead ends: 119101 [2022-07-12 08:23:03,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:23:03,851 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 4185 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:23:03,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4494 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:23:03,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119101 states. [2022-07-12 08:23:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119101 to 118325. [2022-07-12 08:23:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118325 states, 104911 states have (on average 1.5178675258075893) internal successors, (159241), 105940 states have internal predecessors, (159241), 8036 states have call successors, (8036), 4609 states have call predecessors, (8036), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-07-12 08:23:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118325 states to 118325 states and 193066 transitions. [2022-07-12 08:23:09,121 INFO L78 Accepts]: Start accepts. Automaton has 118325 states and 193066 transitions. Word has length 147 [2022-07-12 08:23:09,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:23:09,121 INFO L495 AbstractCegarLoop]: Abstraction has 118325 states and 193066 transitions. [2022-07-12 08:23:09,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:23:09,122 INFO L276 IsEmpty]: Start isEmpty. Operand 118325 states and 193066 transitions. [2022-07-12 08:23:09,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 08:23:09,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:23:09,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:23:09,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 08:23:09,571 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,SelfDestructingSolverStorable11 [2022-07-12 08:23:09,574 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:23:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:23:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1311563429, now seen corresponding path program 1 times [2022-07-12 08:23:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:23:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476594856] [2022-07-12 08:23:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:23:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:23:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:23:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:23:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:23:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:23:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:23:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:23:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:23:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:23:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:23:09,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476594856] [2022-07-12 08:23:09,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476594856] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:23:09,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946894434] [2022-07-12 08:23:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:23:09,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:23:09,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:23:09,677 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) [2022-07-12 08:23:09,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:23:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:23:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:23:09,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:23:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 08:23:10,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:23:10,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946894434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:23:10,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:23:10,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:23:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465689924] [2022-07-12 08:23:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:23:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:23:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:23:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:23:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:23:10,064 INFO L87 Difference]: Start difference. First operand 118325 states and 193066 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:23:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:23:18,863 INFO L93 Difference]: Finished difference Result 347926 states and 570032 transitions. [2022-07-12 08:23:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:23:18,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-07-12 08:23:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.