./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 343a266e04a35949615e598ecd53205cd1ef95f44fcd29af6bf4976fff243198 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:13:26,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:13:26,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:13:26,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:13:26,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:13:26,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:13:26,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:13:26,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:13:26,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:13:26,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:13:26,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:13:26,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:13:26,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:13:26,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:13:26,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:13:26,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:13:26,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:13:26,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:13:27,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:13:27,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:13:27,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:13:27,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:13:27,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:13:27,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:13:27,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:13:27,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:13:27,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:13:27,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:13:27,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:13:27,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:13:27,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:13:27,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:13:27,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:13:27,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:13:27,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:13:27,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:13:27,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:13:27,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:13:27,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:13:27,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:13:27,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:13:27,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:13:27,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:13:27,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:13:27,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:13:27,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:13:27,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:13:27,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:13:27,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:13:27,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:13:27,051 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:13:27,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:13:27,052 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:13:27,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:13:27,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:13:27,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:13:27,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:13:27,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:13:27,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:13:27,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:13:27,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:13:27,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:13:27,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:13:27,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:13:27,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:13:27,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:13:27,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:13:27,056 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:13:27,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:13:27,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:13:27,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:13:27,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 343a266e04a35949615e598ecd53205cd1ef95f44fcd29af6bf4976fff243198 [2021-12-21 14:13:27,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:13:27,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:13:27,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:13:27,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:13:27,277 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:13:27,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c [2021-12-21 14:13:27,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ed81518/95aa0b78afae4e43a23ed464a0dd6589/FLAGa047dd584 [2021-12-21 14:13:28,064 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:13:28,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-2.c [2021-12-21 14:13:28,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ed81518/95aa0b78afae4e43a23ed464a0dd6589/FLAGa047dd584 [2021-12-21 14:13:28,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5ed81518/95aa0b78afae4e43a23ed464a0dd6589 [2021-12-21 14:13:28,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:13:28,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:13:28,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:13:28,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:13:28,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:13:28,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:13:28" (1/1) ... [2021-12-21 14:13:28,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cef342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:28, skipping insertion in model container [2021-12-21 14:13:28,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:13:28" (1/1) ... [2021-12-21 14:13:28,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:13:28,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:13:29,729 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.08.cil-2.c[381679,381692] [2021-12-21 14:13:29,749 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.08.cil-2.c[383339,383352] [2021-12-21 14:13:29,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:13:29,938 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:13:30,545 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.08.cil-2.c[381679,381692] [2021-12-21 14:13:30,552 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.08.cil-2.c[383339,383352] [2021-12-21 14:13:30,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:13:30,601 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:13:30,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30 WrapperNode [2021-12-21 14:13:30,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:13:30,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:13:30,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:13:30,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:13:30,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:30,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:30,951 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2021-12-21 14:13:30,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:13:30,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:13:30,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:13:30,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:13:30,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:30,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:13:31,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:13:31,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:13:31,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:13:31,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (1/1) ... [2021-12-21 14:13:31,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:13:31,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:13:31,442 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) [2021-12-21 14:13:31,481 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 [2021-12-21 14:13:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:13:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:13:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:13:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:13:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:13:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:13:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:13:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 14:13:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 14:13:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:13:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:13:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:13:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:13:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:13:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:13:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:13:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:13:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:13:31,613 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:13:31,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:13:36,185 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:13:36,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:13:36,201 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-21 14:13:36,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:13:36 BoogieIcfgContainer [2021-12-21 14:13:36,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:13:36,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:13:36,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:13:36,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:13:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:13:28" (1/3) ... [2021-12-21 14:13:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3421c78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:13:36, skipping insertion in model container [2021-12-21 14:13:36,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:30" (2/3) ... [2021-12-21 14:13:36,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3421c78c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:13:36, skipping insertion in model container [2021-12-21 14:13:36,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:13:36" (3/3) ... [2021-12-21 14:13:36,222 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.08.cil-2.c [2021-12-21 14:13:36,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:13:36,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:13:36,261 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:13:36,265 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 [2021-12-21 14:13:36,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:13:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 14:13:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:36,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:36,315 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] [2021-12-21 14:13:36,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2021-12-21 14:13:36,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:36,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883487122] [2021-12-21 14:13:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:36,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:36,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:36,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883487122] [2021-12-21 14:13:36,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883487122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:36,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:36,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:13:36,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554171512] [2021-12-21 14:13:36,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:36,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:13:36,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:13:36,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:13:36,727 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-21 14:13:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:37,601 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2021-12-21 14:13:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:13:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:37,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:37,635 INFO L225 Difference]: With dead ends: 5037 [2021-12-21 14:13:37,636 INFO L226 Difference]: Without dead ends: 2503 [2021-12-21 14:13:37,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:13:37,645 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16906 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:37,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16906 Invalid, 551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 14:13:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-21 14:13:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2021-12-21 14:13:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-21 14:13:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2021-12-21 14:13:37,755 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2021-12-21 14:13:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:37,756 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2021-12-21 14:13:37,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-12-21 14:13:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2021-12-21 14:13:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:37,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:37,764 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] [2021-12-21 14:13:37,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:13:37,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:37,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:37,766 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2021-12-21 14:13:37,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:37,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626801918] [2021-12-21 14:13:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:37,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:37,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:38,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:38,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626801918] [2021-12-21 14:13:38,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626801918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:38,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:38,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:13:38,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173049105] [2021-12-21 14:13:38,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:38,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:13:38,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:13:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:13:38,013 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-21 14:13:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:39,613 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2021-12-21 14:13:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:13:39,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:39,624 INFO L225 Difference]: With dead ends: 3147 [2021-12-21 14:13:39,625 INFO L226 Difference]: Without dead ends: 2879 [2021-12-21 14:13:39,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:13:39,628 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12654 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17132 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:39,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17132 Invalid, 1493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:13:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-21 14:13:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2021-12-21 14:13:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-21 14:13:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2021-12-21 14:13:39,686 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2021-12-21 14:13:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:39,687 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2021-12-21 14:13:39,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2021-12-21 14:13:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2021-12-21 14:13:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:39,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:39,689 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] [2021-12-21 14:13:39,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:13:39,689 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:39,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2021-12-21 14:13:39,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:39,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488947109] [2021-12-21 14:13:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:39,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:39,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:39,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488947109] [2021-12-21 14:13:39,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488947109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:39,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:39,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:39,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826611770] [2021-12-21 14:13:39,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:39,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:39,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:39,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:39,795 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:41,777 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2021-12-21 14:13:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:41,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:41,790 INFO L225 Difference]: With dead ends: 3810 [2021-12-21 14:13:41,790 INFO L226 Difference]: Without dead ends: 3265 [2021-12-21 14:13:41,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:41,799 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17330 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:41,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 22031 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:13:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-21 14:13:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2021-12-21 14:13:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-21 14:13:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2021-12-21 14:13:41,992 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2021-12-21 14:13:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:41,992 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2021-12-21 14:13:41,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2021-12-21 14:13:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:41,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:41,995 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] [2021-12-21 14:13:41,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:13:41,995 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2021-12-21 14:13:41,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:41,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695686855] [2021-12-21 14:13:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:41,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:42,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695686855] [2021-12-21 14:13:42,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695686855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:42,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:42,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:42,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634075929] [2021-12-21 14:13:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:42,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:42,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:42,108 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:44,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:44,049 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2021-12-21 14:13:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:44,065 INFO L225 Difference]: With dead ends: 4787 [2021-12-21 14:13:44,066 INFO L226 Difference]: Without dead ends: 3984 [2021-12-21 14:13:44,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:44,071 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16833 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:44,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21339 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:13:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-12-21 14:13:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2021-12-21 14:13:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-21 14:13:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2021-12-21 14:13:44,192 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2021-12-21 14:13:44,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:44,197 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2021-12-21 14:13:44,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:44,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2021-12-21 14:13:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:44,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:44,204 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] [2021-12-21 14:13:44,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:13:44,204 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:44,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2021-12-21 14:13:44,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:44,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228487600] [2021-12-21 14:13:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:44,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:44,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228487600] [2021-12-21 14:13:44,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228487600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:44,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:44,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:44,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976195072] [2021-12-21 14:13:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:44,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:44,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:44,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:44,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:44,317 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:46,217 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2021-12-21 14:13:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:46,235 INFO L225 Difference]: With dead ends: 6668 [2021-12-21 14:13:46,236 INFO L226 Difference]: Without dead ends: 5348 [2021-12-21 14:13:46,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:46,242 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:46,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 22015 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-21 14:13:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2021-12-21 14:13:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-21 14:13:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2021-12-21 14:13:46,369 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2021-12-21 14:13:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:46,370 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2021-12-21 14:13:46,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2021-12-21 14:13:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:46,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:46,372 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] [2021-12-21 14:13:46,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:13:46,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2021-12-21 14:13:46,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:46,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635104178] [2021-12-21 14:13:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:46,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:46,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:46,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635104178] [2021-12-21 14:13:46,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635104178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:46,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:46,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:46,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392106580] [2021-12-21 14:13:46,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:46,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:46,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:46,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:46,485 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:48,572 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2021-12-21 14:13:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:48,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:48,603 INFO L225 Difference]: With dead ends: 10422 [2021-12-21 14:13:48,603 INFO L226 Difference]: Without dead ends: 8067 [2021-12-21 14:13:48,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:48,615 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 22007 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:48,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 22007 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:13:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-12-21 14:13:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2021-12-21 14:13:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-21 14:13:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2021-12-21 14:13:48,870 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2021-12-21 14:13:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:48,870 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2021-12-21 14:13:48,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2021-12-21 14:13:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:48,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:48,875 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] [2021-12-21 14:13:48,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:13:48,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2021-12-21 14:13:48,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:48,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275256091] [2021-12-21 14:13:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:48,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:49,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:49,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275256091] [2021-12-21 14:13:49,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275256091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:49,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:49,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:49,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36455313] [2021-12-21 14:13:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:49,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:49,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:49,010 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:51,126 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2021-12-21 14:13:51,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:51,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:51,165 INFO L225 Difference]: With dead ends: 17948 [2021-12-21 14:13:51,165 INFO L226 Difference]: Without dead ends: 13509 [2021-12-21 14:13:51,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:51,183 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 22002 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:51,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 22002 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:51,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2021-12-21 14:13:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2021-12-21 14:13:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-21 14:13:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2021-12-21 14:13:51,593 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2021-12-21 14:13:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:51,593 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2021-12-21 14:13:51,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:51,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2021-12-21 14:13:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:51,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:51,599 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] [2021-12-21 14:13:51,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:13:51,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2021-12-21 14:13:51,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:51,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627612657] [2021-12-21 14:13:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:51,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:51,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:51,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627612657] [2021-12-21 14:13:51,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627612657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:51,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:51,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:51,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806735570] [2021-12-21 14:13:51,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:51,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:51,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:51,690 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:53,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:53,020 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2021-12-21 14:13:53,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:13:53,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:53,059 INFO L225 Difference]: With dead ends: 22268 [2021-12-21 14:13:53,060 INFO L226 Difference]: Without dead ends: 13648 [2021-12-21 14:13:53,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:13:53,087 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12435 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:53,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16845 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:13:53,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2021-12-21 14:13:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2021-12-21 14:13:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-21 14:13:53,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2021-12-21 14:13:53,515 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2021-12-21 14:13:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2021-12-21 14:13:53,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:53,516 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2021-12-21 14:13:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:53,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:53,522 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] [2021-12-21 14:13:53,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:13:53,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2021-12-21 14:13:53,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316161507] [2021-12-21 14:13:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:53,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:53,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:53,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316161507] [2021-12-21 14:13:53,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316161507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:53,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:53,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:53,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907916390] [2021-12-21 14:13:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:53,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:53,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:53,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:53,628 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:56,475 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2021-12-21 14:13:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:13:56,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:56,544 INFO L225 Difference]: With dead ends: 32965 [2021-12-21 14:13:56,544 INFO L226 Difference]: Without dead ends: 24345 [2021-12-21 14:13:56,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:56,577 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21991 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:56,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21991 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2125 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:56,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2021-12-21 14:13:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2021-12-21 14:13:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2021-12-21 14:13:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2021-12-21 14:13:57,563 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2021-12-21 14:13:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:57,563 INFO L470 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2021-12-21 14:13:57,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:13:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2021-12-21 14:13:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:13:57,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:57,573 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] [2021-12-21 14:13:57,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:13:57,573 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:57,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2021-12-21 14:13:57,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:57,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322931255] [2021-12-21 14:13:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:57,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:13:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:13:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:13:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:13:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:57,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:57,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322931255] [2021-12-21 14:13:57,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322931255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:57,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:57,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:57,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937161310] [2021-12-21 14:13:57,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:57,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:57,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:57,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:57,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:57,665 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:14:02,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:14:02,454 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2021-12-21 14:14:02,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:14:02,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:14:02,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:14:02,616 INFO L225 Difference]: With dead ends: 70813 [2021-12-21 14:14:02,616 INFO L226 Difference]: Without dead ends: 53767 [2021-12-21 14:14:02,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:14:02,665 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17318 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:14:02,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5412 Valid, 21976 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:14:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2021-12-21 14:14:04,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2021-12-21 14:14:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2021-12-21 14:14:04,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2021-12-21 14:14:04,928 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2021-12-21 14:14:04,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:14:04,928 INFO L470 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2021-12-21 14:14:04,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:14:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2021-12-21 14:14:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:14:04,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:14:04,945 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] [2021-12-21 14:14:04,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:14:04,946 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:14:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:14:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2021-12-21 14:14:04,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:14:04,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231214412] [2021-12-21 14:14:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:14:04,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:14:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:14:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:14:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:14:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:14:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:14:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:14:05,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:14:05,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231214412] [2021-12-21 14:14:05,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231214412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:14:05,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:14:05,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:14:05,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113466393] [2021-12-21 14:14:05,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:14:05,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:14:05,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:14:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:14:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:14:05,031 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:14:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:14:13,909 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2021-12-21 14:14:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:14:13,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2021-12-21 14:14:13,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:14:14,299 INFO L225 Difference]: With dead ends: 136652 [2021-12-21 14:14:14,300 INFO L226 Difference]: Without dead ends: 102885 [2021-12-21 14:14:14,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:14:14,395 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16853 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21468 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:14:14,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 21468 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:14:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2021-12-21 14:14:18,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2021-12-21 14:14:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2021-12-21 14:14:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2021-12-21 14:14:19,111 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2021-12-21 14:14:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:14:19,112 INFO L470 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2021-12-21 14:14:19,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2021-12-21 14:14:19,112 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2021-12-21 14:14:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 14:14:19,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:14:19,140 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] [2021-12-21 14:14:19,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:14:19,140 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:14:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:14:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2021-12-21 14:14:19,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:14:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666476946] [2021-12-21 14:14:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:14:19,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:14:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:14:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 14:14:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:14:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 14:14:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 14:14:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:14:19,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:14:19,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666476946] [2021-12-21 14:14:19,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666476946] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:14:19,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:14:19,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:14:19,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806071556] [2021-12-21 14:14:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:14:19,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:14:19,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:14:19,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:14:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:14:19,219 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)