./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+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 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:33:03,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:33:03,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:33:03,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:33:03,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:33:03,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:33:03,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:33:03,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:33:03,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:33:03,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:33:03,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:33:04,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:33:04,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:33:04,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:33:04,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:33:04,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:33:04,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:33:04,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:33:04,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:33:04,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:33:04,007 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:33:04,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:33:04,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:33:04,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:33:04,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:33:04,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:33:04,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:33:04,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:33:04,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:33:04,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:33:04,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:33:04,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:33:04,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:33:04,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:33:04,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:33:04,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:33:04,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:33:04,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:33:04,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:33:04,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:33:04,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:33:04,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:33:04,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:33:04,034 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:33:04,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:33:04,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:33:04,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:33:04,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:33:04,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:33:04,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:33:04,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:33:04,036 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:33:04,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:33:04,037 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:33:04,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:33:04,040 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:33:04,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:33:04,040 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:33:04,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:33:04,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:33:04,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:04,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:33:04,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:33:04,042 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:33:04,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:33:04,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:33:04,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c5568751dd37ae3ac79e02a0fd7273b3ab2af9e94f13bec2f84e6a22bfe26f6 [2022-07-22 19:33:04,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:33:04,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:33:04,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:33:04,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:33:04,225 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:33:04,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2022-07-22 19:33:04,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc72b753/b5f8c150860046dc8491d64777633505/FLAGfbc262f42 [2022-07-22 19:33:04,841 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:33:04,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-2.c [2022-07-22 19:33:04,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc72b753/b5f8c150860046dc8491d64777633505/FLAGfbc262f42 [2022-07-22 19:33:04,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbc72b753/b5f8c150860046dc8491d64777633505 [2022-07-22 19:33:05,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:33:05,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:33:05,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:05,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:33:05,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:33:05,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:04" (1/1) ... [2022-07-22 19:33:05,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c31a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:05, skipping insertion in model container [2022-07-22 19:33:05,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:04" (1/1) ... [2022-07-22 19:33:05,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:33:05,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:33:06,287 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_label43+token_ring.04.cil-2.c[381679,381692] [2022-07-22 19:33:06,305 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_label43+token_ring.04.cil-2.c[383339,383352] [2022-07-22 19:33:06,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:06,412 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:33:07,203 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_label43+token_ring.04.cil-2.c[381679,381692] [2022-07-22 19:33:07,206 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_label43+token_ring.04.cil-2.c[383339,383352] [2022-07-22 19:33:07,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:07,271 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:33:07,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07 WrapperNode [2022-07-22 19:33:07,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:07,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:07,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:33:07,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:33:07,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:07,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:07,769 INFO L137 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12740 [2022-07-22 19:33:07,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:07,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:33:07,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:33:07,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:33:07,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:07,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:07,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:07,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:08,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:08,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:08,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:08,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:33:08,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:33:08,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:33:08,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:33:08,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (1/1) ... [2022-07-22 19:33:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:08,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:08,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:33:08,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:33:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:33:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:33:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:33:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:33:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:33:08,233 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:33:08,233 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:33:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:33:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:33:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:33:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:33:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:33:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:33:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:33:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:33:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:33:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:33:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:33:08,304 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:33:08,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:33:13,048 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:33:13,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:33:13,075 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-22 19:33:13,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:13 BoogieIcfgContainer [2022-07-22 19:33:13,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:33:13,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:33:13,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:33:13,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:33:13,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:33:04" (1/3) ... [2022-07-22 19:33:13,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7941c029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:13, skipping insertion in model container [2022-07-22 19:33:13,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:07" (2/3) ... [2022-07-22 19:33:13,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7941c029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:13, skipping insertion in model container [2022-07-22 19:33:13,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:13" (3/3) ... [2022-07-22 19:33:13,084 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-2.c [2022-07-22 19:33:13,093 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:33:13,093 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:33:13,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:33:13,154 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@644afe2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37b4d3c3 [2022-07-22 19:33:13,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:33:13,162 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) [2022-07-22 19:33:13,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:13,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:13,172 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] [2022-07-22 19:33:13,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1085362317, now seen corresponding path program 1 times [2022-07-22 19:33:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:13,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219834753] [2022-07-22 19:33:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:13,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:13,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219834753] [2022-07-22 19:33:13,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219834753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:13,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:13,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:33:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28948383] [2022-07-22 19:33:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:13,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:33:13,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:13,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:33:13,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:33:13,393 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) [2022-07-22 19:33:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:14,076 INFO L93 Difference]: Finished difference Result 4793 states and 8852 transitions. [2022-07-22 19:33:14,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:33:14,078 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 [2022-07-22 19:33:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:14,104 INFO L225 Difference]: With dead ends: 4793 [2022-07-22 19:33:14,104 INFO L226 Difference]: Without dead ends: 2359 [2022-07-22 19:33:14,110 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 [2022-07-22 19:33:14,112 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 [2022-07-22 19:33:14,128 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] [2022-07-22 19:33:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-07-22 19:33:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2305. [2022-07-22 19:33:14,256 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) [2022-07-22 19:33:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4236 transitions. [2022-07-22 19:33:14,262 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4236 transitions. Word has length 91 [2022-07-22 19:33:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:14,263 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 4236 transitions. [2022-07-22 19:33:14,263 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) [2022-07-22 19:33:14,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4236 transitions. [2022-07-22 19:33:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:14,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:14,267 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] [2022-07-22 19:33:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:33:14,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1642847029, now seen corresponding path program 1 times [2022-07-22 19:33:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:14,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245613978] [2022-07-22 19:33:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:14,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:14,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245613978] [2022-07-22 19:33:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245613978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:14,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:33:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569696753] [2022-07-22 19:33:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:14,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:33:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:14,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:33:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:33:14,438 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) [2022-07-22 19:33:15,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:15,431 INFO L93 Difference]: Finished difference Result 2759 states and 4947 transitions. [2022-07-22 19:33:15,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:33:15,432 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 [2022-07-22 19:33:15,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:15,444 INFO L225 Difference]: With dead ends: 2759 [2022-07-22 19:33:15,444 INFO L226 Difference]: Without dead ends: 2587 [2022-07-22 19:33:15,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:33:15,448 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 [2022-07-22 19:33:15,449 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] [2022-07-22 19:33:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2022-07-22 19:33:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2478. [2022-07-22 19:33:15,498 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) [2022-07-22 19:33:15,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 4503 transitions. [2022-07-22 19:33:15,505 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 4503 transitions. Word has length 91 [2022-07-22 19:33:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:15,506 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 4503 transitions. [2022-07-22 19:33:15,506 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) [2022-07-22 19:33:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 4503 transitions. [2022-07-22 19:33:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:15,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:15,512 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] [2022-07-22 19:33:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:33:15,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:15,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash -411857615, now seen corresponding path program 1 times [2022-07-22 19:33:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619396484] [2022-07-22 19:33:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:15,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619396484] [2022-07-22 19:33:15,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619396484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:15,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436466143] [2022-07-22 19:33:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:15,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:15,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:15,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:15,670 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) [2022-07-22 19:33:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:16,923 INFO L93 Difference]: Finished difference Result 3162 states and 5569 transitions. [2022-07-22 19:33:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:16,924 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 [2022-07-22 19:33:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:16,932 INFO L225 Difference]: With dead ends: 3162 [2022-07-22 19:33:16,932 INFO L226 Difference]: Without dead ends: 2817 [2022-07-22 19:33:16,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:16,934 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 [2022-07-22 19:33:16,935 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] [2022-07-22 19:33:16,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-07-22 19:33:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2640. [2022-07-22 19:33:17,017 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) [2022-07-22 19:33:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4747 transitions. [2022-07-22 19:33:17,023 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4747 transitions. Word has length 91 [2022-07-22 19:33:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:17,024 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 4747 transitions. [2022-07-22 19:33:17,024 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) [2022-07-22 19:33:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4747 transitions. [2022-07-22 19:33:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:17,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:17,025 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] [2022-07-22 19:33:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:33:17,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1322246835, now seen corresponding path program 1 times [2022-07-22 19:33:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271139755] [2022-07-22 19:33:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271139755] [2022-07-22 19:33:17,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271139755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:17,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:17,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086820850] [2022-07-22 19:33:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:17,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:17,213 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) [2022-07-22 19:33:18,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:18,182 INFO L93 Difference]: Finished difference Result 3755 states and 6481 transitions. [2022-07-22 19:33:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:18,183 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 [2022-07-22 19:33:18,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:18,193 INFO L225 Difference]: With dead ends: 3755 [2022-07-22 19:33:18,193 INFO L226 Difference]: Without dead ends: 3248 [2022-07-22 19:33:18,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:18,195 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:18,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20747 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:33:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-07-22 19:33:18,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2965. [2022-07-22 19:33:18,247 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) [2022-07-22 19:33:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5240 transitions. [2022-07-22 19:33:18,254 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5240 transitions. Word has length 91 [2022-07-22 19:33:18,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:18,254 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 5240 transitions. [2022-07-22 19:33:18,255 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) [2022-07-22 19:33:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5240 transitions. [2022-07-22 19:33:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:18,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:18,256 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] [2022-07-22 19:33:18,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:33:18,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash -2085497615, now seen corresponding path program 1 times [2022-07-22 19:33:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:18,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513565501] [2022-07-22 19:33:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513565501] [2022-07-22 19:33:18,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513565501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:18,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:18,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762054003] [2022-07-22 19:33:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:18,319 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) [2022-07-22 19:33:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:19,307 INFO L93 Difference]: Finished difference Result 4900 states and 8238 transitions. [2022-07-22 19:33:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:19,310 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 [2022-07-22 19:33:19,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:19,322 INFO L225 Difference]: With dead ends: 4900 [2022-07-22 19:33:19,323 INFO L226 Difference]: Without dead ends: 4068 [2022-07-22 19:33:19,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:19,325 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 4597 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:19,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 21164 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:33:19,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-07-22 19:33:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3616. [2022-07-22 19:33:19,453 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) [2022-07-22 19:33:19,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 6232 transitions. [2022-07-22 19:33:19,464 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 6232 transitions. Word has length 91 [2022-07-22 19:33:19,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:19,465 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 6232 transitions. [2022-07-22 19:33:19,465 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) [2022-07-22 19:33:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 6232 transitions. [2022-07-22 19:33:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:19,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:19,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:33:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:33:19,467 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash 298427123, now seen corresponding path program 1 times [2022-07-22 19:33:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:19,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895464563] [2022-07-22 19:33:19,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895464563] [2022-07-22 19:33:19,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895464563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:19,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:19,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426918512] [2022-07-22 19:33:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:19,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:19,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:19,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:19,572 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) [2022-07-22 19:33:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:20,761 INFO L93 Difference]: Finished difference Result 7702 states and 12526 transitions. [2022-07-22 19:33:20,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:20,762 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 [2022-07-22 19:33:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:20,786 INFO L225 Difference]: With dead ends: 7702 [2022-07-22 19:33:20,786 INFO L226 Difference]: Without dead ends: 6219 [2022-07-22 19:33:20,794 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 [2022-07-22 19:33:20,794 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 [2022-07-22 19:33:20,795 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] [2022-07-22 19:33:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-07-22 19:33:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 4908. [2022-07-22 19:33:20,952 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) [2022-07-22 19:33:20,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8226 transitions. [2022-07-22 19:33:20,965 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8226 transitions. Word has length 91 [2022-07-22 19:33:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:20,965 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 8226 transitions. [2022-07-22 19:33:20,966 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) [2022-07-22 19:33:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8226 transitions. [2022-07-22 19:33:20,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:20,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:20,969 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] [2022-07-22 19:33:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:33:20,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -668923531, now seen corresponding path program 1 times [2022-07-22 19:33:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:20,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261376385] [2022-07-22 19:33:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:21,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:21,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:21,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:21,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261376385] [2022-07-22 19:33:21,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261376385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:21,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:21,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641884871] [2022-07-22 19:33:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:21,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:21,040 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) [2022-07-22 19:33:22,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:22,467 INFO L93 Difference]: Finished difference Result 12540 states and 20022 transitions. [2022-07-22 19:33:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:22,468 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 [2022-07-22 19:33:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:22,503 INFO L225 Difference]: With dead ends: 12540 [2022-07-22 19:33:22,503 INFO L226 Difference]: Without dead ends: 9765 [2022-07-22 19:33:22,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:22,514 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 4623 mSDsluCounter, 16752 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-22 19:33:22,514 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] [2022-07-22 19:33:22,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2022-07-22 19:33:22,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 7321. [2022-07-22 19:33:22,838 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) [2022-07-22 19:33:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 11966 transitions. [2022-07-22 19:33:22,849 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 11966 transitions. Word has length 91 [2022-07-22 19:33:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:22,849 INFO L495 AbstractCegarLoop]: Abstraction has 7321 states and 11966 transitions. [2022-07-22 19:33:22,849 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) [2022-07-22 19:33:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 11966 transitions. [2022-07-22 19:33:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:22,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:22,853 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] [2022-07-22 19:33:22,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:33:22,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:22,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:22,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1239534259, now seen corresponding path program 1 times [2022-07-22 19:33:22,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:22,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876488796] [2022-07-22 19:33:22,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:22,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:22,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:22,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876488796] [2022-07-22 19:33:22,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876488796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:22,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:22,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111037248] [2022-07-22 19:33:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:22,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:22,911 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) [2022-07-22 19:33:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:24,247 INFO L93 Difference]: Finished difference Result 21439 states and 33876 transitions. [2022-07-22 19:33:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:24,248 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 [2022-07-22 19:33:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:24,300 INFO L225 Difference]: With dead ends: 21439 [2022-07-22 19:33:24,300 INFO L226 Difference]: Without dead ends: 16251 [2022-07-22 19:33:24,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:24,337 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:24,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 21136 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:33:24,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2022-07-22 19:33:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 12290. [2022-07-22 19:33:24,940 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) [2022-07-22 19:33:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 19878 transitions. [2022-07-22 19:33:24,968 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 19878 transitions. Word has length 91 [2022-07-22 19:33:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:24,968 INFO L495 AbstractCegarLoop]: Abstraction has 12290 states and 19878 transitions. [2022-07-22 19:33:24,968 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) [2022-07-22 19:33:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 19878 transitions. [2022-07-22 19:33:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:24,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:24,984 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] [2022-07-22 19:33:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:33:24,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:24,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash 746908085, now seen corresponding path program 1 times [2022-07-22 19:33:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:24,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125004143] [2022-07-22 19:33:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:25,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:25,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125004143] [2022-07-22 19:33:25,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125004143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:25,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:25,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286693967] [2022-07-22 19:33:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:25,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:25,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:25,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:25,064 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) [2022-07-22 19:33:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:26,930 INFO L93 Difference]: Finished difference Result 39094 states and 62122 transitions. [2022-07-22 19:33:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:26,931 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 [2022-07-22 19:33:26,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:27,014 INFO L225 Difference]: With dead ends: 39094 [2022-07-22 19:33:27,014 INFO L226 Difference]: Without dead ends: 28937 [2022-07-22 19:33:27,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:27,046 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 [2022-07-22 19:33:27,047 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] [2022-07-22 19:33:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2022-07-22 19:33:27,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22195. [2022-07-22 19:33:27,932 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) [2022-07-22 19:33:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 36154 transitions. [2022-07-22 19:33:27,988 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 36154 transitions. Word has length 91 [2022-07-22 19:33:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:27,988 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 36154 transitions. [2022-07-22 19:33:27,988 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) [2022-07-22 19:33:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 36154 transitions. [2022-07-22 19:33:28,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:28,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:28,002 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] [2022-07-22 19:33:28,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:33:28,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:28,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1700848243, now seen corresponding path program 1 times [2022-07-22 19:33:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:28,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590235225] [2022-07-22 19:33:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590235225] [2022-07-22 19:33:28,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590235225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:28,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:28,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056735563] [2022-07-22 19:33:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:28,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:28,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:28,084 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) [2022-07-22 19:33:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:30,989 INFO L93 Difference]: Finished difference Result 73149 states and 118600 transitions. [2022-07-22 19:33:30,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:30,990 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 [2022-07-22 19:33:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:31,158 INFO L225 Difference]: With dead ends: 73149 [2022-07-22 19:33:31,158 INFO L226 Difference]: Without dead ends: 53087 [2022-07-22 19:33:31,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:31,214 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4591 mSDsluCounter, 16740 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-07-22 19:33:31,215 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] [2022-07-22 19:33:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53087 states. [2022-07-22 19:33:33,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53087 to 41916. [2022-07-22 19:33:33,131 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) [2022-07-22 19:33:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41916 states to 41916 states and 70074 transitions. [2022-07-22 19:33:33,493 INFO L78 Accepts]: Start accepts. Automaton has 41916 states and 70074 transitions. Word has length 91 [2022-07-22 19:33:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:33,494 INFO L495 AbstractCegarLoop]: Abstraction has 41916 states and 70074 transitions. [2022-07-22 19:33:33,494 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) [2022-07-22 19:33:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 41916 states and 70074 transitions. [2022-07-22 19:33:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 19:33:33,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:33,522 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] [2022-07-22 19:33:33,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:33:33,523 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash 484694517, now seen corresponding path program 1 times [2022-07-22 19:33:33,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:33,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172659480] [2022-07-22 19:33:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:33,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:33,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:33,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172659480] [2022-07-22 19:33:33,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172659480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:33,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:33,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:33:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563665364] [2022-07-22 19:33:33,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:33:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:33:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:33:33,595 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) [2022-07-22 19:33:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:37,609 INFO L93 Difference]: Finished difference Result 114784 states and 187983 transitions. [2022-07-22 19:33:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:33:37,610 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 [2022-07-22 19:33:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:37,993 INFO L225 Difference]: With dead ends: 114784 [2022-07-22 19:33:37,993 INFO L226 Difference]: Without dead ends: 75002 [2022-07-22 19:33:38,077 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 [2022-07-22 19:33:38,078 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 [2022-07-22 19:33:38,078 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] [2022-07-22 19:33:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75002 states. [2022-07-22 19:33:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75002 to 61307. [2022-07-22 19:33:40,779 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) [2022-07-22 19:33:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61307 states to 61307 states and 100403 transitions. [2022-07-22 19:33:40,935 INFO L78 Accepts]: Start accepts. Automaton has 61307 states and 100403 transitions. Word has length 91 [2022-07-22 19:33:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:40,935 INFO L495 AbstractCegarLoop]: Abstraction has 61307 states and 100403 transitions. [2022-07-22 19:33:40,935 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) [2022-07-22 19:33:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 61307 states and 100403 transitions. [2022-07-22 19:33:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 19:33:41,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:41,046 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] [2022-07-22 19:33:41,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:33:41,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:41,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:41,046 INFO L85 PathProgramCache]: Analyzing trace with hash -908289339, now seen corresponding path program 1 times [2022-07-22 19:33:41,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:41,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765137127] [2022-07-22 19:33:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:41,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:33:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:33:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:33:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:41,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765137127] [2022-07-22 19:33:41,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765137127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:41,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741741947] [2022-07-22 19:33:41,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:41,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:41,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:41,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:33:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:41,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:41,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 19:33:41,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:41,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741741947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:41,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:41,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:33:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198313089] [2022-07-22 19:33:41,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:41,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:41,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:41,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:41,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:41,551 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) [2022-07-22 19:33:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:46,217 INFO L93 Difference]: Finished difference Result 178274 states and 292637 transitions. [2022-07-22 19:33:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:33:46,218 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 [2022-07-22 19:33:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:46,650 INFO L225 Difference]: With dead ends: 178274 [2022-07-22 19:33:46,650 INFO L226 Difference]: Without dead ends: 119101 [2022-07-22 19:33:46,778 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 [2022-07-22 19:33:46,779 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 [2022-07-22 19:33:46,779 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] [2022-07-22 19:33:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119101 states. [2022-07-22 19:33:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119101 to 118325. [2022-07-22 19:33:52,159 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) [2022-07-22 19:33:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118325 states to 118325 states and 193066 transitions. [2022-07-22 19:33:52,723 INFO L78 Accepts]: Start accepts. Automaton has 118325 states and 193066 transitions. Word has length 147 [2022-07-22 19:33:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:52,724 INFO L495 AbstractCegarLoop]: Abstraction has 118325 states and 193066 transitions. [2022-07-22 19:33:52,724 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) [2022-07-22 19:33:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 118325 states and 193066 transitions. [2022-07-22 19:33:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 19:33:52,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:52,955 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] [2022-07-22 19:33:52,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 19:33:53,184 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 [2022-07-22 19:33:53,185 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:53,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1311563429, now seen corresponding path program 1 times [2022-07-22 19:33:53,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:53,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283982573] [2022-07-22 19:33:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:53,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 19:33:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 19:33:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 19:33:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 19:33:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 19:33:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 19:33:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:33:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283982573] [2022-07-22 19:33:53,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283982573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973488285] [2022-07-22 19:33:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:53,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:53,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:53,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:33:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:53,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:53,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 19:33:53,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:53,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973488285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:53,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:53,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:33:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471028085] [2022-07-22 19:33:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:53,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:53,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:53,508 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)