./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_label45+token_ring.09.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 b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:44:27,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:44:27,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:44:27,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:44:27,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:44:27,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:44:27,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:44:27,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:44:27,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:44:27,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:44:27,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:44:27,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:44:27,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:44:27,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:44:27,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:44:27,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:44:27,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:44:27,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:44:27,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:44:27,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:44:27,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:44:27,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:44:27,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:44:27,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:44:27,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:44:27,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:44:27,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:44:27,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:44:27,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:44:27,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:44:27,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:44:27,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:44:27,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:44:27,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:44:27,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:44:27,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:44:27,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:44:27,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:44:27,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:44:27,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:44:27,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:44:27,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:44:27,252 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:44:27,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:44:27,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:44:27,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:44:27,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:44:27,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:44:27,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:44:27,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:44:27,254 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:44:27,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:44:27,255 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:44:27,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:44:27,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:44:27,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:44:27,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:44:27,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:44:27,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:44:27,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:44:27,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:44:27,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:44:27,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:44:27,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:44:27,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:44:27,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:44:27,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:44:27,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:44:27,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:44:27,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:44:27,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 [2021-12-14 15:44:27,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:44:27,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:44:27,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:44:27,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:44:27,448 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:44:27,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2021-12-14 15:44:27,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514d8f0f0/9ee9f01c7dc84e2eb4c3c941ede4a98d/FLAGf63f2fe3b [2021-12-14 15:44:28,106 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:44:28,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2021-12-14 15:44:28,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514d8f0f0/9ee9f01c7dc84e2eb4c3c941ede4a98d/FLAGf63f2fe3b [2021-12-14 15:44:28,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/514d8f0f0/9ee9f01c7dc84e2eb4c3c941ede4a98d [2021-12-14 15:44:28,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:44:28,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:44:28,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:44:28,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:44:28,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:44:28,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:44:28" (1/1) ... [2021-12-14 15:44:28,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fec0361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:28, skipping insertion in model container [2021-12-14 15:44:28,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:44:28" (1/1) ... [2021-12-14 15:44:28,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:44:28,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:44:29,625 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_label45+token_ring.09.cil-2.c[380323,380336] [2021-12-14 15:44:29,645 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_label45+token_ring.09.cil-2.c[383339,383352] [2021-12-14 15:44:29,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:44:29,840 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:44:30,498 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_label45+token_ring.09.cil-2.c[380323,380336] [2021-12-14 15:44:30,502 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_label45+token_ring.09.cil-2.c[383339,383352] [2021-12-14 15:44:30,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:44:30,583 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:44:30,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30 WrapperNode [2021-12-14 15:44:30,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:44:30,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:44:30,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:44:30,584 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:44:30,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:30,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:30,945 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-14 15:44:30,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:44:30,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:44:30,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:44:30,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:44:30,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:30,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:44:31,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:44:31,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:44:31,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:44:31,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (1/1) ... [2021-12-14 15:44:31,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:44:31,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:44:31,460 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) [2021-12-14 15:44:31,476 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 [2021-12-14 15:44:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:44:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:44:31,498 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:44:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:44:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:44:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:44:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:44:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:44:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:44:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:44:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:44:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:44:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:44:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:44:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:44:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:44:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:44:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:44:31,634 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:44:31,639 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:44:36,381 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:44:36,405 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:44:36,405 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 15:44:36,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:44:36 BoogieIcfgContainer [2021-12-14 15:44:36,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:44:36,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:44:36,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:44:36,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:44:36,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:44:28" (1/3) ... [2021-12-14 15:44:36,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e20fd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:44:36, skipping insertion in model container [2021-12-14 15:44:36,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:44:30" (2/3) ... [2021-12-14 15:44:36,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e20fd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:44:36, skipping insertion in model container [2021-12-14 15:44:36,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:44:36" (3/3) ... [2021-12-14 15:44:36,413 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2021-12-14 15:44:36,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:44:36,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:44:36,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:44:36,465 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 [2021-12-14 15:44:36,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:44:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:44:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:36,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:36,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:36,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:36,522 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-14 15:44:36,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:36,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70970492] [2021-12-14 15:44:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:36,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:36,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:36,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:36,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70970492] [2021-12-14 15:44:36,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70970492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:36,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:36,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:44:36,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480697213] [2021-12-14 15:44:36,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:36,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:44:36,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:36,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:44:36,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:44:36,909 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:44:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:37,983 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-14 15:44:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:44:37,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:38,003 INFO L225 Difference]: With dead ends: 5096 [2021-12-14 15:44:38,003 INFO L226 Difference]: Without dead ends: 2539 [2021-12-14 15:44:38,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:44:38,012 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:38,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:44:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-14 15:44:38,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-14 15:44:38,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:44:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-14 15:44:38,133 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-14 15:44:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:38,134 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-14 15:44:38,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:44:38,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-14 15:44:38,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:38,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:38,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:38,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:44:38,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-14 15:44:38,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:38,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630841467] [2021-12-14 15:44:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:38,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:38,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:38,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630841467] [2021-12-14 15:44:38,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630841467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:38,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:38,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:44:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312452140] [2021-12-14 15:44:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:38,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:44:38,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:44:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:44:38,389 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:44:40,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:40,183 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-14 15:44:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:44:40,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:40,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:40,194 INFO L225 Difference]: With dead ends: 3244 [2021-12-14 15:44:40,194 INFO L226 Difference]: Without dead ends: 2952 [2021-12-14 15:44:40,197 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 [2021-12-14 15:44:40,199 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:40,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:44:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-14 15:44:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-14 15:44:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:44:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-14 15:44:40,278 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-14 15:44:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:40,279 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-14 15:44:40,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:44:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-14 15:44:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:40,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:40,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:40,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:44:40,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:40,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-14 15:44:40,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:40,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294595400] [2021-12-14 15:44:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:40,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:40,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:40,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294595400] [2021-12-14 15:44:40,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294595400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:40,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:40,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:40,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680876019] [2021-12-14 15:44:40,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:40,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:40,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:40,432 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:41,470 INFO L93 Difference]: Finished difference Result 3561 states and 6264 transitions. [2021-12-14 15:44:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:41,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:41,480 INFO L225 Difference]: With dead ends: 3561 [2021-12-14 15:44:41,480 INFO L226 Difference]: Without dead ends: 2966 [2021-12-14 15:44:41,482 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 [2021-12-14 15:44:41,482 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4977 mSDsluCounter, 12487 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 16964 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:41,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 16964 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-12-14 15:44:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2733. [2021-12-14 15:44:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8071028037383177) internal successors, (4834), 2679 states have internal predecessors, (4834), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:44:41,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4921 transitions. [2021-12-14 15:44:41,552 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4921 transitions. Word has length 146 [2021-12-14 15:44:41,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:41,553 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4921 transitions. [2021-12-14 15:44:41,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:41,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4921 transitions. [2021-12-14 15:44:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:41,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:41,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:41,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:44:41,555 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-14 15:44:41,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:41,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122257182] [2021-12-14 15:44:41,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:41,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:41,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:41,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122257182] [2021-12-14 15:44:41,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122257182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:41,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:41,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:41,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098479734] [2021-12-14 15:44:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:41,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:41,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:41,699 INFO L87 Difference]: Start difference. First operand 2733 states and 4921 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:43,913 INFO L93 Difference]: Finished difference Result 3969 states and 6909 transitions. [2021-12-14 15:44:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:43,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:43,924 INFO L225 Difference]: With dead ends: 3969 [2021-12-14 15:44:43,924 INFO L226 Difference]: Without dead ends: 3374 [2021-12-14 15:44:43,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:44:43,927 INFO L933 BasicCegarLoop]: 4763 mSDtfsCounter, 5194 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22224 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:43,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22224 Invalid, 2465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:44:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2021-12-14 15:44:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3016. [2021-12-14 15:44:43,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2933 states have (on average 1.7852028639618138) internal successors, (5236), 2938 states have internal predecessors, (5236), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-14 15:44:44,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5361 transitions. [2021-12-14 15:44:44,002 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5361 transitions. Word has length 146 [2021-12-14 15:44:44,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:44,002 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5361 transitions. [2021-12-14 15:44:44,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:44,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5361 transitions. [2021-12-14 15:44:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:44,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:44,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:44,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:44:44,006 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:44,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:44,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-14 15:44:44,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540271544] [2021-12-14 15:44:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:44,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:44,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540271544] [2021-12-14 15:44:44,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540271544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:44,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:44,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:44,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478052553] [2021-12-14 15:44:44,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:44,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:44,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:44,141 INFO L87 Difference]: Start difference. First operand 3016 states and 5361 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:46,400 INFO L93 Difference]: Finished difference Result 5038 states and 8605 transitions. [2021-12-14 15:44:46,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:46,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:46,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:46,416 INFO L225 Difference]: With dead ends: 5038 [2021-12-14 15:44:46,416 INFO L226 Difference]: Without dead ends: 4160 [2021-12-14 15:44:46,420 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 [2021-12-14 15:44:46,421 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5190 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5206 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:46,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5206 Valid, 22213 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:44:46,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-12-14 15:44:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3585. [2021-12-14 15:44:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7511587485515643) internal successors, (6045), 3459 states have internal predecessors, (6045), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:44:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6250 transitions. [2021-12-14 15:44:46,534 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6250 transitions. Word has length 146 [2021-12-14 15:44:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:46,534 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6250 transitions. [2021-12-14 15:44:46,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6250 transitions. [2021-12-14 15:44:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:46,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:46,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:46,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:44:46,538 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:46,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:46,538 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-14 15:44:46,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:46,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490280359] [2021-12-14 15:44:46,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:46,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:46,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490280359] [2021-12-14 15:44:46,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490280359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:46,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:46,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:46,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371705191] [2021-12-14 15:44:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:46,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:46,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:46,636 INFO L87 Difference]: Start difference. First operand 3585 states and 6250 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:47,633 INFO L93 Difference]: Finished difference Result 5595 states and 9483 transitions. [2021-12-14 15:44:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:47,648 INFO L225 Difference]: With dead ends: 5595 [2021-12-14 15:44:47,648 INFO L226 Difference]: Without dead ends: 4148 [2021-12-14 15:44:47,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:47,655 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 4974 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 16950 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:47,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 16950 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-12-14 15:44:47,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3585. [2021-12-14 15:44:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.749710312862109) internal successors, (6040), 3459 states have internal predecessors, (6040), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:44:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6245 transitions. [2021-12-14 15:44:47,763 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6245 transitions. Word has length 146 [2021-12-14 15:44:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6245 transitions. [2021-12-14 15:44:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6245 transitions. [2021-12-14 15:44:47,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:47,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:47,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:47,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:44:47,767 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:47,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-14 15:44:47,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:47,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669444595] [2021-12-14 15:44:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:47,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:47,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:47,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669444595] [2021-12-14 15:44:47,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669444595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:47,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:47,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:47,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030498794] [2021-12-14 15:44:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:47,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:47,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:47,888 INFO L87 Difference]: Start difference. First operand 3585 states and 6245 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:48,949 INFO L93 Difference]: Finished difference Result 5589 states and 9456 transitions. [2021-12-14 15:44:48,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:48,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:48,962 INFO L225 Difference]: With dead ends: 5589 [2021-12-14 15:44:48,962 INFO L226 Difference]: Without dead ends: 4142 [2021-12-14 15:44:48,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:48,973 INFO L933 BasicCegarLoop]: 4432 mSDtfsCounter, 4895 mSDsluCounter, 16607 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:48,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 21039 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-12-14 15:44:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3585. [2021-12-14 15:44:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7482618771726535) internal successors, (6035), 3459 states have internal predecessors, (6035), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:44:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6240 transitions. [2021-12-14 15:44:49,059 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6240 transitions. Word has length 146 [2021-12-14 15:44:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:49,059 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6240 transitions. [2021-12-14 15:44:49,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6240 transitions. [2021-12-14 15:44:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:49,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:49,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:49,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:44:49,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:49,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:49,062 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-14 15:44:49,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:49,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140093594] [2021-12-14 15:44:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:49,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:49,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140093594] [2021-12-14 15:44:49,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140093594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:49,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:49,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:49,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550758981] [2021-12-14 15:44:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:49,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:49,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:49,162 INFO L87 Difference]: Start difference. First operand 3585 states and 6240 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:50,268 INFO L93 Difference]: Finished difference Result 5583 states and 9429 transitions. [2021-12-14 15:44:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:44:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:50,289 INFO L225 Difference]: With dead ends: 5583 [2021-12-14 15:44:50,292 INFO L226 Difference]: Without dead ends: 4136 [2021-12-14 15:44:50,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:44:50,298 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 4839 mSDsluCounter, 16608 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:50,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 21064 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:44:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-12-14 15:44:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3585. [2021-12-14 15:44:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7468134414831982) internal successors, (6030), 3459 states have internal predecessors, (6030), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:44:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6235 transitions. [2021-12-14 15:44:50,387 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6235 transitions. Word has length 146 [2021-12-14 15:44:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:50,388 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6235 transitions. [2021-12-14 15:44:50,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6235 transitions. [2021-12-14 15:44:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:50,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:50,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:50,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:44:50,391 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-14 15:44:50,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:50,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951781656] [2021-12-14 15:44:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:50,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:50,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:50,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951781656] [2021-12-14 15:44:50,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951781656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:50,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:50,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:50,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227076826] [2021-12-14 15:44:50,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:50,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:50,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:50,501 INFO L87 Difference]: Start difference. First operand 3585 states and 6235 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:52,594 INFO L93 Difference]: Finished difference Result 7089 states and 11766 transitions. [2021-12-14 15:44:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:52,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:52,616 INFO L225 Difference]: With dead ends: 7089 [2021-12-14 15:44:52,616 INFO L226 Difference]: Without dead ends: 5642 [2021-12-14 15:44:52,620 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 [2021-12-14 15:44:52,622 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 5168 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:52,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 22190 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:44:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-12-14 15:44:52,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 4741. [2021-12-14 15:44:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4741 states, 4508 states have (on average 1.6987577639751552) internal successors, (7658), 4519 states have internal predecessors, (7658), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-14 15:44:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8029 transitions. [2021-12-14 15:44:52,758 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8029 transitions. Word has length 146 [2021-12-14 15:44:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 4741 states and 8029 transitions. [2021-12-14 15:44:52,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8029 transitions. [2021-12-14 15:44:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:52,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:52,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:44:52,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-14 15:44:52,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:52,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660280457] [2021-12-14 15:44:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:52,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:52,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660280457] [2021-12-14 15:44:52,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660280457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:52,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:52,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:52,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260317338] [2021-12-14 15:44:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:52,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:52,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:52,872 INFO L87 Difference]: Start difference. First operand 4741 states and 8029 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:55,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:55,039 INFO L93 Difference]: Finished difference Result 11231 states and 18258 transitions. [2021-12-14 15:44:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:44:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:55,058 INFO L225 Difference]: With dead ends: 11231 [2021-12-14 15:44:55,058 INFO L226 Difference]: Without dead ends: 8628 [2021-12-14 15:44:55,066 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 [2021-12-14 15:44:55,066 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 5170 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22183 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:55,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 22183 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:44:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2021-12-14 15:44:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 7054. [2021-12-14 15:44:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 6621 states have (on average 1.6480894124754568) internal successors, (10912), 6640 states have internal predecessors, (10912), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-14 15:44:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 11633 transitions. [2021-12-14 15:44:55,313 INFO L78 Accepts]: Start accepts. Automaton has 7054 states and 11633 transitions. Word has length 146 [2021-12-14 15:44:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:55,314 INFO L470 AbstractCegarLoop]: Abstraction has 7054 states and 11633 transitions. [2021-12-14 15:44:55,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7054 states and 11633 transitions. [2021-12-14 15:44:55,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:55,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:55,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:55,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:44:55,318 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:55,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:55,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-14 15:44:55,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:55,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361765148] [2021-12-14 15:44:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:55,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:55,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:55,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361765148] [2021-12-14 15:44:55,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361765148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:55,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:55,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:55,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367648746] [2021-12-14 15:44:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:55,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:55,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:55,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:55,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:55,408 INFO L87 Difference]: Start difference. First operand 7054 states and 11633 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:58,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:44:58,409 INFO L93 Difference]: Finished difference Result 21460 states and 34282 transitions. [2021-12-14 15:44:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:44:58,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:44:58,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:44:58,451 INFO L225 Difference]: With dead ends: 21460 [2021-12-14 15:44:58,451 INFO L226 Difference]: Without dead ends: 16544 [2021-12-14 15:44:58,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:44:58,469 INFO L933 BasicCegarLoop]: 4854 mSDtfsCounter, 5247 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 22300 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:44:58,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5262 Valid, 22300 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:44:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2021-12-14 15:44:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11504. [2021-12-14 15:44:58,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11504 states, 10687 states have (on average 1.6053148685318612) internal successors, (17156), 10722 states have internal predecessors, (17156), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-14 15:44:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 18599 transitions. [2021-12-14 15:44:59,003 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 18599 transitions. Word has length 146 [2021-12-14 15:44:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:44:59,004 INFO L470 AbstractCegarLoop]: Abstraction has 11504 states and 18599 transitions. [2021-12-14 15:44:59,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:44:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 18599 transitions. [2021-12-14 15:44:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:44:59,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:44:59,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:44:59,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:44:59,010 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:44:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:44:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-14 15:44:59,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:44:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130088130] [2021-12-14 15:44:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:44:59,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:44:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:44:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:44:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:44:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:44:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:44:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:44:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:44:59,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:44:59,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130088130] [2021-12-14 15:44:59,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130088130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:44:59,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:44:59,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:44:59,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123368974] [2021-12-14 15:44:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:44:59,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:44:59,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:44:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:44:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:44:59,107 INFO L87 Difference]: Start difference. First operand 11504 states and 18599 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:45:02,599 INFO L93 Difference]: Finished difference Result 38948 states and 61842 transitions. [2021-12-14 15:45:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:45:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:45:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:45:02,697 INFO L225 Difference]: With dead ends: 38948 [2021-12-14 15:45:02,697 INFO L226 Difference]: Without dead ends: 29582 [2021-12-14 15:45:02,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:45:02,733 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 5455 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:45:02,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 22159 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:45:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29582 states. [2021-12-14 15:45:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29582 to 20545. [2021-12-14 15:45:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20545 states, 18976 states have (on average 1.577887858347386) internal successors, (29942), 19043 states have internal predecessors, (29942), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-14 15:45:03,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20545 states to 20545 states and 32959 transitions. [2021-12-14 15:45:03,746 INFO L78 Accepts]: Start accepts. Automaton has 20545 states and 32959 transitions. Word has length 146 [2021-12-14 15:45:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:45:03,746 INFO L470 AbstractCegarLoop]: Abstraction has 20545 states and 32959 transitions. [2021-12-14 15:45:03,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:03,746 INFO L276 IsEmpty]: Start isEmpty. Operand 20545 states and 32959 transitions. [2021-12-14 15:45:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:45:03,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:45:03,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:45:03,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:45:03,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:45:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:45:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2021-12-14 15:45:03,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:45:03,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685410611] [2021-12-14 15:45:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:45:03,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:45:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:45:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:45:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:45:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:45:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:45:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:45:03,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:45:03,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685410611] [2021-12-14 15:45:03,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685410611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:45:03,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:45:03,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:45:03,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367206692] [2021-12-14 15:45:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:45:03,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:45:03,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:45:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:45:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:45:03,850 INFO L87 Difference]: Start difference. First operand 20545 states and 32959 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:45:08,816 INFO L93 Difference]: Finished difference Result 73779 states and 117496 transitions. [2021-12-14 15:45:08,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:45:08,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:45:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:45:08,976 INFO L225 Difference]: With dead ends: 73779 [2021-12-14 15:45:08,976 INFO L226 Difference]: Without dead ends: 55372 [2021-12-14 15:45:09,026 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 [2021-12-14 15:45:09,029 INFO L933 BasicCegarLoop]: 4705 mSDtfsCounter, 5415 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:45:09,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5441 Valid, 22154 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:45:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55372 states. [2021-12-14 15:45:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55372 to 38594. [2021-12-14 15:45:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38594 states, 35553 states have (on average 1.5622872893989255) internal successors, (55544), 35684 states have internal predecessors, (55544), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-14 15:45:11,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38594 states to 38594 states and 62131 transitions. [2021-12-14 15:45:11,133 INFO L78 Accepts]: Start accepts. Automaton has 38594 states and 62131 transitions. Word has length 146 [2021-12-14 15:45:11,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:45:11,134 INFO L470 AbstractCegarLoop]: Abstraction has 38594 states and 62131 transitions. [2021-12-14 15:45:11,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 38594 states and 62131 transitions. [2021-12-14 15:45:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:45:11,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:45:11,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:45:11,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:45:11,150 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:45:11,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:45:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2021-12-14 15:45:11,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:45:11,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483324812] [2021-12-14 15:45:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:45:11,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:45:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:45:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:45:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:45:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:45:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:45:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:45:11,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:45:11,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483324812] [2021-12-14 15:45:11,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483324812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:45:11,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:45:11,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:45:11,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195697628] [2021-12-14 15:45:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:45:11,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:45:11,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:45:11,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:45:11,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:45:11,228 INFO L87 Difference]: Start difference. First operand 38594 states and 62131 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:19,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:45:19,568 INFO L93 Difference]: Finished difference Result 142258 states and 228862 transitions. [2021-12-14 15:45:19,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:45:19,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-14 15:45:19,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:45:19,935 INFO L225 Difference]: With dead ends: 142258 [2021-12-14 15:45:19,935 INFO L226 Difference]: Without dead ends: 105802 [2021-12-14 15:45:20,058 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 [2021-12-14 15:45:20,058 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5276 mSDsluCounter, 16899 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21502 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:45:20,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 21502 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:45:20,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105802 states. [2021-12-14 15:45:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105802 to 74627. [2021-12-14 15:45:24,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74627 states, 68706 states have (on average 1.5545949407620878) internal successors, (106810), 68965 states have internal predecessors, (106810), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-12-14 15:45:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74627 states to 74627 states and 121867 transitions. [2021-12-14 15:45:24,494 INFO L78 Accepts]: Start accepts. Automaton has 74627 states and 121867 transitions. Word has length 146 [2021-12-14 15:45:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:45:24,494 INFO L470 AbstractCegarLoop]: Abstraction has 74627 states and 121867 transitions. [2021-12-14 15:45:24,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:45:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 74627 states and 121867 transitions. [2021-12-14 15:45:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:45:24,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:45:24,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:45:24,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:45:24,523 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:45:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:45:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 294053690, now seen corresponding path program 1 times [2021-12-14 15:45:24,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:45:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893432665] [2021-12-14 15:45:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:45:24,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:45:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:45:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:45:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:45:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:45:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:45:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:45:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:45:24,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:45:24,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893432665] [2021-12-14 15:45:24,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893432665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:45:24,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:45:24,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:45:24,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733604895] [2021-12-14 15:45:24,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:45:24,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:45:24,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:45:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:45:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:45:24,615 INFO L87 Difference]: Start difference. First operand 74627 states and 121867 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)