./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.14.cil.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 42cb47d17200048b14811b4ea8d60759bded6ec8fe8815c3e841b46a3cafae19 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:56:26,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:56:26,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:56:26,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:56:26,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:56:26,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:56:26,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:56:26,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:56:26,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:56:26,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:56:26,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:56:26,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:56:26,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:56:26,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:56:26,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:56:26,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:56:26,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:56:26,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:56:26,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:56:26,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:56:26,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:56:26,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:56:26,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:56:26,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:56:27,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:56:27,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:56:27,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:56:27,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:56:27,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:56:27,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:56:27,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:56:27,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:56:27,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:56:27,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:56:27,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:56:27,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:56:27,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:56:27,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:56:27,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:56:27,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:56:27,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:56:27,016 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:56:27,046 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:56:27,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:56:27,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:56:27,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:56:27,048 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:56:27,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:56:27,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:56:27,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:56:27,049 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:56:27,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:56:27,050 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:56:27,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:56:27,051 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:56:27,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:56:27,052 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:56:27,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:56:27,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:56:27,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:56:27,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:56:27,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:56:27,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:56:27,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:56:27,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:56:27,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:56:27,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:56:27,055 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:56:27,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:56:27,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:56:27,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:56:27,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42cb47d17200048b14811b4ea8d60759bded6ec8fe8815c3e841b46a3cafae19 [2021-12-16 01:56:27,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:56:27,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:56:27,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:56:27,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:56:27,307 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:56:27,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c [2021-12-16 01:56:27,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370e6116a/c6cdeddb4968440b8bdf8558060f6abb/FLAG1b3a861a8 [2021-12-16 01:56:28,174 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:56:28,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.14.cil.c [2021-12-16 01:56:28,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370e6116a/c6cdeddb4968440b8bdf8558060f6abb/FLAG1b3a861a8 [2021-12-16 01:56:28,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370e6116a/c6cdeddb4968440b8bdf8558060f6abb [2021-12-16 01:56:28,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:56:28,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:56:28,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:56:28,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:56:28,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:56:28,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:28" (1/1) ... [2021-12-16 01:56:28,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5546408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:28, skipping insertion in model container [2021-12-16 01:56:28,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:28" (1/1) ... [2021-12-16 01:56:28,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:56:28,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:56:30,438 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.14.cil.c[381679,381692] [2021-12-16 01:56:30,463 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.14.cil.c[383339,383352] [2021-12-16 01:56:30,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:56:30,721 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:56:31,468 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.14.cil.c[381679,381692] [2021-12-16 01:56:31,476 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.14.cil.c[383339,383352] [2021-12-16 01:56:31,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:56:31,560 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:56:31,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31 WrapperNode [2021-12-16 01:56:31,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:56:31,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:56:31,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:56:31,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:56:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:31,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,028 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2021-12-16 01:56:32,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:56:32,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:56:32,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:56:32,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:56:32,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:56:32,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:56:32,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:56:32,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:56:32,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (1/1) ... [2021-12-16 01:56:32,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:56:32,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:56:32,537 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) [2021-12-16 01:56:32,587 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 [2021-12-16 01:56:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:56:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:56:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:56:32,625 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:56:32,625 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:56:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:56:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:56:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 01:56:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 01:56:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:56:32,626 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:56:32,626 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:56:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:56:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:56:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:56:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:56:32,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:56:32,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:56:32,759 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:56:32,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:56:38,873 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:56:38,896 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:56:38,896 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-16 01:56:38,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:38 BoogieIcfgContainer [2021-12-16 01:56:38,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:56:38,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:56:38,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:56:38,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:56:38,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:56:28" (1/3) ... [2021-12-16 01:56:38,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea01c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:38, skipping insertion in model container [2021-12-16 01:56:38,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:31" (2/3) ... [2021-12-16 01:56:38,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea01c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:38, skipping insertion in model container [2021-12-16 01:56:38,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:38" (3/3) ... [2021-12-16 01:56:38,910 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.14.cil.c [2021-12-16 01:56:38,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:56:38,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:56:38,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:56:38,981 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:56:38,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:56:39,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-16 01:56:39,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:39,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:39,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:39,060 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:39,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2021-12-16 01:56:39,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:39,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788307172] [2021-12-16 01:56:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:39,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:39,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:39,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788307172] [2021-12-16 01:56:39,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788307172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:39,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:39,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:56:39,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341268484] [2021-12-16 01:56:39,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:39,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:56:39,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:56:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:56:39,610 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 01:56:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:41,104 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2021-12-16 01:56:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:56:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:41,130 INFO L225 Difference]: With dead ends: 5277 [2021-12-16 01:56:41,131 INFO L226 Difference]: Without dead ends: 2645 [2021-12-16 01:56:41,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:56:41,142 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 1044 mSDsluCounter, 12495 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 17186 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:41,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 17186 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:56:41,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-16 01:56:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-16 01:56:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-16 01:56:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2021-12-16 01:56:41,341 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2021-12-16 01:56:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:41,342 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2021-12-16 01:56:41,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 01:56:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2021-12-16 01:56:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:41,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:41,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:41,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:56:41,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2021-12-16 01:56:41,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:41,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827347304] [2021-12-16 01:56:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:41,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:41,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:41,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827347304] [2021-12-16 01:56:41,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827347304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:41,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:41,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:56:41,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456695582] [2021-12-16 01:56:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:41,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:56:41,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:56:41,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:56:41,546 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 01:56:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:43,001 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2021-12-16 01:56:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:56:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:43,017 INFO L225 Difference]: With dead ends: 3012 [2021-12-16 01:56:43,018 INFO L226 Difference]: Without dead ends: 2645 [2021-12-16 01:56:43,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:56:43,025 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 1030 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 16913 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:43,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 16913 Invalid, 766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:56:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-16 01:56:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-16 01:56:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-16 01:56:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2021-12-16 01:56:43,106 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2021-12-16 01:56:43,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:43,107 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2021-12-16 01:56:43,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-16 01:56:43,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2021-12-16 01:56:43,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:43,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:43,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:43,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:56:43,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2021-12-16 01:56:43,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:43,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691482478] [2021-12-16 01:56:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:43,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:43,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691482478] [2021-12-16 01:56:43,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691482478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:43,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:43,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:56:43,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012245070] [2021-12-16 01:56:43,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:43,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:56:43,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:56:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:56:43,335 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-16 01:56:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:46,321 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2021-12-16 01:56:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:56:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:46,336 INFO L225 Difference]: With dead ends: 3529 [2021-12-16 01:56:46,337 INFO L226 Difference]: Without dead ends: 3167 [2021-12-16 01:56:46,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:46,340 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 5521 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 17573 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:46,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5540 Valid, 17573 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 01:56:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-12-16 01:56:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2021-12-16 01:56:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-16 01:56:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2021-12-16 01:56:46,448 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2021-12-16 01:56:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:46,448 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2021-12-16 01:56:46,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-16 01:56:46,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2021-12-16 01:56:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:46,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:46,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:46,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:56:46,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2021-12-16 01:56:46,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951960098] [2021-12-16 01:56:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:46,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:46,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:46,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951960098] [2021-12-16 01:56:46,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951960098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:46,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:46,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:46,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066805890] [2021-12-16 01:56:46,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:46,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:46,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:46,628 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:50,189 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2021-12-16 01:56:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:50,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:50,205 INFO L225 Difference]: With dead ends: 4448 [2021-12-16 01:56:50,206 INFO L226 Difference]: Without dead ends: 3707 [2021-12-16 01:56:50,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:50,210 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5549 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 22795 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:50,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 22795 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-16 01:56:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-12-16 01:56:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2021-12-16 01:56:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-16 01:56:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2021-12-16 01:56:50,341 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2021-12-16 01:56:50,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:50,341 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2021-12-16 01:56:50,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:50,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2021-12-16 01:56:50,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:50,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:50,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:50,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:56:50,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:50,346 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2021-12-16 01:56:50,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:50,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016729162] [2021-12-16 01:56:50,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:50,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:50,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:50,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016729162] [2021-12-16 01:56:50,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016729162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:50,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:50,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532585276] [2021-12-16 01:56:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:50,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:50,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:50,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:50,522 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:53,788 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2021-12-16 01:56:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:53,807 INFO L225 Difference]: With dead ends: 5803 [2021-12-16 01:56:53,808 INFO L226 Difference]: Without dead ends: 4710 [2021-12-16 01:56:53,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:53,812 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5660 mSDsluCounter, 17150 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 21867 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:53,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 21867 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-16 01:56:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-12-16 01:56:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2021-12-16 01:56:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-16 01:56:53,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2021-12-16 01:56:53,978 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2021-12-16 01:56:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:53,979 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2021-12-16 01:56:53,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2021-12-16 01:56:53,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:53,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:53,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:53,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:56:53,983 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2021-12-16 01:56:53,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:53,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775380525] [2021-12-16 01:56:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:53,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:54,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:54,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:54,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775380525] [2021-12-16 01:56:54,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775380525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:54,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:54,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:54,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714842745] [2021-12-16 01:56:54,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:54,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:54,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:54,158 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:57,519 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2021-12-16 01:56:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:57,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:56:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:57,544 INFO L225 Difference]: With dead ends: 8408 [2021-12-16 01:56:57,544 INFO L226 Difference]: Without dead ends: 6610 [2021-12-16 01:56:57,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:57,550 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5544 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5563 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:57,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5563 Valid, 22779 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-16 01:56:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-12-16 01:56:57,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2021-12-16 01:56:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-16 01:56:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2021-12-16 01:56:57,758 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2021-12-16 01:56:57,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:57,759 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2021-12-16 01:56:57,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:56:57,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2021-12-16 01:56:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:56:57,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:57,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:57,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:56:57,763 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:57,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2021-12-16 01:56:57,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:57,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071329921] [2021-12-16 01:56:57,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:57,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:56:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:56:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:56:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:56:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:57,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:57,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071329921] [2021-12-16 01:56:57,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071329921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:57,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:57,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:57,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827718161] [2021-12-16 01:56:57,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:57,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:57,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:57,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:57,936 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:01,256 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2021-12-16 01:57:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:01,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:57:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:01,298 INFO L225 Difference]: With dead ends: 13610 [2021-12-16 01:57:01,299 INFO L226 Difference]: Without dead ends: 10401 [2021-12-16 01:57:01,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:01,317 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 5539 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:01,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22771 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 01:57:01,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-12-16 01:57:01,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2021-12-16 01:57:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-16 01:57:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2021-12-16 01:57:01,810 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2021-12-16 01:57:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:01,810 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2021-12-16 01:57:01,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2021-12-16 01:57:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:57:01,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:01,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:01,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:57:01,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2021-12-16 01:57:01,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:01,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022024486] [2021-12-16 01:57:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:01,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:57:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:57:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:57:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:57:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:01,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022024486] [2021-12-16 01:57:01,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022024486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:01,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:01,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:01,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503397350] [2021-12-16 01:57:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:01,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:01,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:01,974 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:05,438 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2021-12-16 01:57:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:05,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:57:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:05,505 INFO L225 Difference]: With dead ends: 24032 [2021-12-16 01:57:05,505 INFO L226 Difference]: Without dead ends: 17987 [2021-12-16 01:57:05,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:05,533 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 5538 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:05,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5557 Valid, 22766 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 01:57:05,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-12-16 01:57:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2021-12-16 01:57:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 01:57:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2021-12-16 01:57:06,245 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2021-12-16 01:57:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:06,245 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2021-12-16 01:57:06,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2021-12-16 01:57:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:57:06,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:06,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:06,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:57:06,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:06,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:06,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2021-12-16 01:57:06,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:06,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230369748] [2021-12-16 01:57:06,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:06,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:57:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:57:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:57:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:57:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:06,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:06,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230369748] [2021-12-16 01:57:06,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230369748] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:06,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:06,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:06,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140689044] [2021-12-16 01:57:06,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:06,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:06,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:06,411 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:09,065 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2021-12-16 01:57:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:09,065 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:57:09,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:09,130 INFO L225 Difference]: With dead ends: 29968 [2021-12-16 01:57:09,130 INFO L226 Difference]: Without dead ends: 18238 [2021-12-16 01:57:09,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:09,173 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5089 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21378 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5109 Valid, 21378 Invalid, 1566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:57:09,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-12-16 01:57:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2021-12-16 01:57:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 01:57:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2021-12-16 01:57:09,768 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2021-12-16 01:57:09,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2021-12-16 01:57:09,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:09,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2021-12-16 01:57:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:57:09,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:09,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:09,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:57:09,778 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2021-12-16 01:57:09,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:09,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170575018] [2021-12-16 01:57:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:09,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:57:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:57:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:57:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:57:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:09,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:09,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170575018] [2021-12-16 01:57:09,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170575018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:09,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:09,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:09,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699305159] [2021-12-16 01:57:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:09,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:09,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:09,918 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:12,205 INFO L93 Difference]: Finished difference Result 29934 states and 48619 transitions. [2021-12-16 01:57:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:57:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:12,270 INFO L225 Difference]: With dead ends: 29934 [2021-12-16 01:57:12,270 INFO L226 Difference]: Without dead ends: 18204 [2021-12-16 01:57:12,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:12,305 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5087 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5107 SdHoareTripleChecker+Valid, 21374 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:12,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5107 Valid, 21374 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:57:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-12-16 01:57:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 13871. [2021-12-16 01:57:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6117165159595024) internal successors, (20854), 12974 states have internal predecessors, (20854), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-16 01:57:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22527 transitions. [2021-12-16 01:57:13,094 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22527 transitions. Word has length 179 [2021-12-16 01:57:13,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:13,094 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22527 transitions. [2021-12-16 01:57:13,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22527 transitions. [2021-12-16 01:57:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 01:57:13,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:13,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:13,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:57:13,103 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2021-12-16 01:57:13,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:13,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860152529] [2021-12-16 01:57:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:13,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 01:57:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 01:57:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-16 01:57:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-16 01:57:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:13,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:13,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860152529] [2021-12-16 01:57:13,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860152529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:13,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:13,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:13,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497573974] [2021-12-16 01:57:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:13,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:13,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:13,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:13,248 INFO L87 Difference]: Start difference. First operand 13871 states and 22527 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-16 01:57:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:17,440 INFO L93 Difference]: Finished difference Result 44807 states and 72145 transitions. [2021-12-16 01:57:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:17,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2021-12-16 01:57:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:17,564 INFO L225 Difference]: With dead ends: 44807 [2021-12-16 01:57:17,565 INFO L226 Difference]: Without dead ends: 33077 [2021-12-16 01:57:17,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:17,602 INFO L933 BasicCegarLoop]: 4938 mSDtfsCounter, 5523 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5542 SdHoareTripleChecker+Valid, 22749 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:17,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5542 Valid, 22749 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-16 01:57:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33077 states.