./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/systemc/transmitter.10.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:17:16,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:17:16,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:17:16,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:17:16,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:17:16,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:17:16,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:17:16,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:17:16,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:17:16,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:17:16,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:17:16,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:17:16,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:17:16,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:17:16,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:17:16,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:17:16,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:17:16,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:17:16,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:17:16,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:17:16,171 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:17:16,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:17:16,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:17:16,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:17:16,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:17:16,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:17:16,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:17:16,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:17:16,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:17:16,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:17:16,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:17:16,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:17:16,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:17:16,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:17:16,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:17:16,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:17:16,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:17:16,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:17:16,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:17:16,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:17:16,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:17:16,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:17:16,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:17:16,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:17:16,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:17:16,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:17:16,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:17:16,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:17:16,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:17:16,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:17:16,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:17:16,201 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:17:16,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:17:16,201 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:17:16,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:17:16,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:17:16,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:17:16,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:17:16,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:17:16,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:17:16,203 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:17:16,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:17:16,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:17:16,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:17:16,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:17:16,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:17:16,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:17:16,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:17:16,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:17:16,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:17:16,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:17:16,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:17:16,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:17:16,205 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:17:16,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:17:16,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:17:16,206 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-07-13 18:17:16,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:17:16,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:17:16,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:17:16,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:17:16,438 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:17:16,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-13 18:17:16,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362795ac/644cadc9dddc47448668970b5ecbd3e8/FLAGac9051f5d [2022-07-13 18:17:16,860 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:17:16,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-13 18:17:16,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362795ac/644cadc9dddc47448668970b5ecbd3e8/FLAGac9051f5d [2022-07-13 18:17:17,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7362795ac/644cadc9dddc47448668970b5ecbd3e8 [2022-07-13 18:17:17,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:17:17,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:17:17,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:17:17,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:17:17,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:17:17,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338f6ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17, skipping insertion in model container [2022-07-13 18:17:17,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:17:17,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:17:17,440 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/systemc/transmitter.10.cil.c[706,719] [2022-07-13 18:17:17,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:17:17,516 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:17:17,524 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/systemc/transmitter.10.cil.c[706,719] [2022-07-13 18:17:17,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:17:17,569 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:17:17,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17 WrapperNode [2022-07-13 18:17:17,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:17:17,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:17:17,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:17:17,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:17:17,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,624 INFO L137 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-07-13 18:17:17,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:17:17,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:17:17,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:17:17,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:17:17,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,636 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:17:17,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:17:17,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:17:17,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:17:17,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (1/1) ... [2022-07-13 18:17:17,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:17:17,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:17:17,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:17:17,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:17:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:17:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 18:17:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 18:17:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 18:17:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 18:17:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 18:17:17,725 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 18:17:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 18:17:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 18:17:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 18:17:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 18:17:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:17:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 18:17:17,726 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 18:17:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:17:17,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:17:17,808 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:17:17,809 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:17:18,298 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:17:18,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:17:18,311 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-13 18:17:18,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:17:18 BoogieIcfgContainer [2022-07-13 18:17:18,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:17:18,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:17:18,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:17:18,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:17:18,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:17:17" (1/3) ... [2022-07-13 18:17:18,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:17:18, skipping insertion in model container [2022-07-13 18:17:18,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:17" (2/3) ... [2022-07-13 18:17:18,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:17:18, skipping insertion in model container [2022-07-13 18:17:18,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:17:18" (3/3) ... [2022-07-13 18:17:18,324 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-07-13 18:17:18,334 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:17:18,334 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:17:18,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:17:18,392 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53e7475e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ec0faa4 [2022-07-13 18:17:18,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:17:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 18:17:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:18,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:18,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:18,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1953724887, now seen corresponding path program 1 times [2022-07-13 18:17:18,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:18,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981943144] [2022-07-13 18:17:18,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:18,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:18,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981943144] [2022-07-13 18:17:18,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981943144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:18,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:18,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:17:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674087794] [2022-07-13 18:17:18,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:18,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:17:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:18,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:17:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:17:18,829 INFO L87 Difference]: Start difference. First operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:19,886 INFO L93 Difference]: Finished difference Result 765 states and 1265 transitions. [2022-07-13 18:17:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:17:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:19,899 INFO L225 Difference]: With dead ends: 765 [2022-07-13 18:17:19,899 INFO L226 Difference]: Without dead ends: 441 [2022-07-13 18:17:19,906 INFO L412 NwaCegarLoop]: 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 [2022-07-13 18:17:19,908 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 868 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:19,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 901 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 18:17:19,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-13 18:17:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-13 18:17:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5597269624573378) internal successors, (457), 294 states have internal predecessors, (457), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 18:17:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 503 transitions. [2022-07-13 18:17:19,991 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 503 transitions. Word has length 163 [2022-07-13 18:17:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:19,991 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 503 transitions. [2022-07-13 18:17:19,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 503 transitions. [2022-07-13 18:17:20,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:20,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:20,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:20,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:17:20,001 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1342455829, now seen corresponding path program 1 times [2022-07-13 18:17:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:20,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443820000] [2022-07-13 18:17:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:20,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443820000] [2022-07-13 18:17:20,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443820000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:20,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:20,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:17:20,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763297648] [2022-07-13 18:17:20,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:20,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:17:20,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:20,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:17:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:17:20,205 INFO L87 Difference]: Start difference. First operand 323 states and 503 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:21,101 INFO L93 Difference]: Finished difference Result 748 states and 1181 transitions. [2022-07-13 18:17:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:17:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:21,105 INFO L225 Difference]: With dead ends: 748 [2022-07-13 18:17:21,105 INFO L226 Difference]: Without dead ends: 441 [2022-07-13 18:17:21,106 INFO L412 NwaCegarLoop]: 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 [2022-07-13 18:17:21,107 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 855 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:21,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 887 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:17:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-13 18:17:21,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-13 18:17:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5563139931740615) internal successors, (456), 294 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 18:17:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 502 transitions. [2022-07-13 18:17:21,127 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 502 transitions. Word has length 163 [2022-07-13 18:17:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:21,127 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 502 transitions. [2022-07-13 18:17:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 502 transitions. [2022-07-13 18:17:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:21,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:21,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:21,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:17:21,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:21,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash -19276883, now seen corresponding path program 1 times [2022-07-13 18:17:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:21,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943873280] [2022-07-13 18:17:21,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:21,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943873280] [2022-07-13 18:17:21,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943873280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:21,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:21,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:17:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896628500] [2022-07-13 18:17:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:17:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:17:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:17:21,280 INFO L87 Difference]: Start difference. First operand 323 states and 502 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:22,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:22,990 INFO L93 Difference]: Finished difference Result 1182 states and 1892 transitions. [2022-07-13 18:17:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:17:22,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:22,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:22,995 INFO L225 Difference]: With dead ends: 1182 [2022-07-13 18:17:22,996 INFO L226 Difference]: Without dead ends: 877 [2022-07-13 18:17:22,997 INFO L412 NwaCegarLoop]: 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 [2022-07-13 18:17:22,998 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1296 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:22,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1402 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 18:17:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-13 18:17:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 641. [2022-07-13 18:17:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 586 states have (on average 1.568259385665529) internal successors, (919), 588 states have internal predecessors, (919), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-13 18:17:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1004 transitions. [2022-07-13 18:17:23,046 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1004 transitions. Word has length 163 [2022-07-13 18:17:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:23,047 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1004 transitions. [2022-07-13 18:17:23,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1004 transitions. [2022-07-13 18:17:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:23,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:23,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:17:23,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -951057460, now seen corresponding path program 1 times [2022-07-13 18:17:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113811363] [2022-07-13 18:17:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:23,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:23,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:23,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113811363] [2022-07-13 18:17:23,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113811363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:23,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:23,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:23,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49032346] [2022-07-13 18:17:23,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:23,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:23,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:23,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:23,189 INFO L87 Difference]: Start difference. First operand 641 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:25,899 INFO L93 Difference]: Finished difference Result 2101 states and 3335 transitions. [2022-07-13 18:17:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:25,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:25,909 INFO L225 Difference]: With dead ends: 2101 [2022-07-13 18:17:25,909 INFO L226 Difference]: Without dead ends: 1478 [2022-07-13 18:17:25,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:25,918 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:25,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2635 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:17:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-13 18:17:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 937. [2022-07-13 18:17:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 857 states have (on average 1.561260210035006) internal successors, (1338), 860 states have internal predecessors, (1338), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-13 18:17:25,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1461 transitions. [2022-07-13 18:17:25,988 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1461 transitions. Word has length 163 [2022-07-13 18:17:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:25,989 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1461 transitions. [2022-07-13 18:17:25,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1461 transitions. [2022-07-13 18:17:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:25,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:25,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:25,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:17:25,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1491486966, now seen corresponding path program 1 times [2022-07-13 18:17:25,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:25,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177152737] [2022-07-13 18:17:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:25,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:26,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177152737] [2022-07-13 18:17:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177152737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:26,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:26,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491965929] [2022-07-13 18:17:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:26,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:26,109 INFO L87 Difference]: Start difference. First operand 937 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:28,851 INFO L93 Difference]: Finished difference Result 3235 states and 5126 transitions. [2022-07-13 18:17:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:28,861 INFO L225 Difference]: With dead ends: 3235 [2022-07-13 18:17:28,862 INFO L226 Difference]: Without dead ends: 2316 [2022-07-13 18:17:28,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:28,864 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:28,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2625 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:17:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-13 18:17:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1530. [2022-07-13 18:17:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1400 states have (on average 1.555) internal successors, (2177), 1405 states have internal predecessors, (2177), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-13 18:17:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2380 transitions. [2022-07-13 18:17:28,971 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2380 transitions. Word has length 163 [2022-07-13 18:17:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:28,972 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2380 transitions. [2022-07-13 18:17:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2380 transitions. [2022-07-13 18:17:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:28,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:28,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:17:28,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:28,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1647467508, now seen corresponding path program 1 times [2022-07-13 18:17:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:28,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782049325] [2022-07-13 18:17:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:29,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782049325] [2022-07-13 18:17:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782049325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:29,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:29,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:29,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621919215] [2022-07-13 18:17:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:29,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:29,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:29,093 INFO L87 Difference]: Start difference. First operand 1530 states and 2380 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:31,919 INFO L93 Difference]: Finished difference Result 5415 states and 8549 transitions. [2022-07-13 18:17:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:31,939 INFO L225 Difference]: With dead ends: 5415 [2022-07-13 18:17:31,939 INFO L226 Difference]: Without dead ends: 3903 [2022-07-13 18:17:31,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:31,944 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 1414 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:31,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2617 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:17:31,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-07-13 18:17:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2722. [2022-07-13 18:17:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2492 states have (on average 1.5509630818619582) internal successors, (3865), 2501 states have internal predecessors, (3865), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 18:17:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4234 transitions. [2022-07-13 18:17:32,084 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4234 transitions. Word has length 163 [2022-07-13 18:17:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 2722 states and 4234 transitions. [2022-07-13 18:17:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4234 transitions. [2022-07-13 18:17:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:32,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:32,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:32,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:17:32,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 859629966, now seen corresponding path program 1 times [2022-07-13 18:17:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:32,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579419668] [2022-07-13 18:17:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:32,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579419668] [2022-07-13 18:17:32,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579419668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:32,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:32,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695024194] [2022-07-13 18:17:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:32,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:32,216 INFO L87 Difference]: Start difference. First operand 2722 states and 4234 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:35,004 INFO L93 Difference]: Finished difference Result 9785 states and 15429 transitions. [2022-07-13 18:17:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:35,029 INFO L225 Difference]: With dead ends: 9785 [2022-07-13 18:17:35,029 INFO L226 Difference]: Without dead ends: 7081 [2022-07-13 18:17:35,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:35,038 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1413 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:35,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 2612 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 18:17:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2022-07-13 18:17:35,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5111. [2022-07-13 18:17:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4681 states have (on average 1.5481734672078615) internal successors, (7247), 4698 states have internal predecessors, (7247), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 18:17:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 7966 transitions. [2022-07-13 18:17:35,334 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 7966 transitions. Word has length 163 [2022-07-13 18:17:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:35,335 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 7966 transitions. [2022-07-13 18:17:35,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 7966 transitions. [2022-07-13 18:17:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:35,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:35,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:17:35,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:35,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1276253236, now seen corresponding path program 1 times [2022-07-13 18:17:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:35,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657619192] [2022-07-13 18:17:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:35,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657619192] [2022-07-13 18:17:35,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657619192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:35,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:35,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636347955] [2022-07-13 18:17:35,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:35,447 INFO L87 Difference]: Start difference. First operand 5111 states and 7966 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:38,607 INFO L93 Difference]: Finished difference Result 18524 states and 29247 transitions. [2022-07-13 18:17:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:38,655 INFO L225 Difference]: With dead ends: 18524 [2022-07-13 18:17:38,656 INFO L226 Difference]: Without dead ends: 13431 [2022-07-13 18:17:38,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:38,671 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1412 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:38,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2607 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 18:17:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2022-07-13 18:17:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 9904. [2022-07-13 18:17:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5465065020938946) internal successors, (14033), 9107 states have internal predecessors, (14033), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 18:17:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15506 transitions. [2022-07-13 18:17:39,296 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15506 transitions. Word has length 163 [2022-07-13 18:17:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:39,296 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15506 transitions. [2022-07-13 18:17:39,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15506 transitions. [2022-07-13 18:17:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:39,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:39,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:39,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:17:39,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1206605362, now seen corresponding path program 1 times [2022-07-13 18:17:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:39,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965909191] [2022-07-13 18:17:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:39,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965909191] [2022-07-13 18:17:39,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965909191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:39,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:39,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:39,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377369739] [2022-07-13 18:17:39,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:39,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:39,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:39,441 INFO L87 Difference]: Start difference. First operand 9904 states and 15506 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:41,028 INFO L93 Difference]: Finished difference Result 23348 states and 37121 transitions. [2022-07-13 18:17:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:17:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:41,072 INFO L225 Difference]: With dead ends: 23348 [2022-07-13 18:17:41,072 INFO L226 Difference]: Without dead ends: 13462 [2022-07-13 18:17:41,095 INFO L412 NwaCegarLoop]: 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 [2022-07-13 18:17:41,096 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1082 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:41,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1149 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 18:17:41,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2022-07-13 18:17:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 9904. [2022-07-13 18:17:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5428697377121445) internal successors, (14000), 9107 states have internal predecessors, (14000), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 18:17:41,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15473 transitions. [2022-07-13 18:17:41,684 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15473 transitions. Word has length 163 [2022-07-13 18:17:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:41,684 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15473 transitions. [2022-07-13 18:17:41,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15473 transitions. [2022-07-13 18:17:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:41,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:41,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:41,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:17:41,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash -788716660, now seen corresponding path program 1 times [2022-07-13 18:17:41,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:41,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313213294] [2022-07-13 18:17:41,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:41,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:41,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:41,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:41,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313213294] [2022-07-13 18:17:41,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313213294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:41,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:41,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892247022] [2022-07-13 18:17:41,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:41,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:41,810 INFO L87 Difference]: Start difference. First operand 9904 states and 15473 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:45,840 INFO L93 Difference]: Finished difference Result 35969 states and 56845 transitions. [2022-07-13 18:17:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:45,923 INFO L225 Difference]: With dead ends: 35969 [2022-07-13 18:17:45,924 INFO L226 Difference]: Without dead ends: 26083 [2022-07-13 18:17:45,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:45,954 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1404 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:45,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2596 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 18:17:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26083 states. [2022-07-13 18:17:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26083 to 19554. [2022-07-13 18:17:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19554 states, 17924 states have (on average 1.5409506806516402) internal successors, (27620), 17989 states have internal predecessors, (27620), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-13 18:17:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19554 states to 19554 states and 30763 transitions. [2022-07-13 18:17:47,328 INFO L78 Accepts]: Start accepts. Automaton has 19554 states and 30763 transitions. Word has length 163 [2022-07-13 18:17:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:47,329 INFO L495 AbstractCegarLoop]: Abstraction has 19554 states and 30763 transitions. [2022-07-13 18:17:47,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19554 states and 30763 transitions. [2022-07-13 18:17:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:47,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:47,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:17:47,355 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:47,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 610236942, now seen corresponding path program 1 times [2022-07-13 18:17:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:47,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633197900] [2022-07-13 18:17:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:47,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:47,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633197900] [2022-07-13 18:17:47,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633197900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:47,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:47,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:47,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126557811] [2022-07-13 18:17:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:47,454 INFO L87 Difference]: Start difference. First operand 19554 states and 30763 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:53,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:53,013 INFO L93 Difference]: Finished difference Result 70929 states and 112917 transitions. [2022-07-13 18:17:53,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:53,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:17:53,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:53,204 INFO L225 Difference]: With dead ends: 70929 [2022-07-13 18:17:53,204 INFO L226 Difference]: Without dead ends: 51393 [2022-07-13 18:17:53,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:53,274 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1403 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:53,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2591 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 18:17:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51393 states. [2022-07-13 18:17:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51393 to 38915. [2022-07-13 18:17:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38915 states, 35685 states have (on average 1.539862687403671) internal successors, (54950), 35814 states have internal predecessors, (54950), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-13 18:17:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38915 states to 38915 states and 61919 transitions. [2022-07-13 18:17:55,903 INFO L78 Accepts]: Start accepts. Automaton has 38915 states and 61919 transitions. Word has length 163 [2022-07-13 18:17:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:55,904 INFO L495 AbstractCegarLoop]: Abstraction has 38915 states and 61919 transitions. [2022-07-13 18:17:55,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:17:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 38915 states and 61919 transitions. [2022-07-13 18:17:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:17:55,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:55,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:55,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:17:55,953 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:55,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:55,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1007203508, now seen corresponding path program 1 times [2022-07-13 18:17:55,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:55,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871395339] [2022-07-13 18:17:55,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:55,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:17:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:17:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:17:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:17:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:56,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871395339] [2022-07-13 18:17:56,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871395339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:56,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:56,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:56,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209423209] [2022-07-13 18:17:56,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:56,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:56,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:56,070 INFO L87 Difference]: Start difference. First operand 38915 states and 61919 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:18:05,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:05,424 INFO L93 Difference]: Finished difference Result 140848 states and 226907 transitions. [2022-07-13 18:18:05,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:18:05,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:18:05,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:05,935 INFO L225 Difference]: With dead ends: 140848 [2022-07-13 18:18:05,935 INFO L226 Difference]: Without dead ends: 101951 [2022-07-13 18:18:06,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:18:06,021 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1405 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:06,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2584 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 18:18:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101951 states. [2022-07-13 18:18:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101951 to 77764. [2022-07-13 18:18:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77764 states, 71334 states have (on average 1.5392379510471865) internal successors, (109800), 71591 states have internal predecessors, (109800), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-07-13 18:18:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77764 states to 77764 states and 125879 transitions. [2022-07-13 18:18:11,297 INFO L78 Accepts]: Start accepts. Automaton has 77764 states and 125879 transitions. Word has length 163 [2022-07-13 18:18:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:11,298 INFO L495 AbstractCegarLoop]: Abstraction has 77764 states and 125879 transitions. [2022-07-13 18:18:11,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:18:11,298 INFO L276 IsEmpty]: Start isEmpty. Operand 77764 states and 125879 transitions. [2022-07-13 18:18:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 18:18:11,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:11,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:11,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:18:11,406 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:11,406 INFO L85 PathProgramCache]: Analyzing trace with hash -643737010, now seen corresponding path program 1 times [2022-07-13 18:18:11,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:11,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348632466] [2022-07-13 18:18:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:18:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 18:18:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 18:18:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 18:18:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 18:18:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:18:11,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:11,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348632466] [2022-07-13 18:18:11,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348632466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:11,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:11,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180564233] [2022-07-13 18:18:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:11,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:11,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:11,529 INFO L87 Difference]: Start difference. First operand 77764 states and 125879 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:18:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:34,055 INFO L93 Difference]: Finished difference Result 312173 states and 508655 transitions. [2022-07-13 18:18:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:18:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-13 18:18:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:35,146 INFO L225 Difference]: With dead ends: 312173 [2022-07-13 18:18:35,146 INFO L226 Difference]: Without dead ends: 234427 [2022-07-13 18:18:35,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:18:35,426 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 1730 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:35,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 2425 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 18:18:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234427 states.