./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ba9401cadb8fecd59a1a331c94e3215cc972a92f03516bfd6c95164e3ec98a9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:16:08,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:16:08,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:16:08,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:16:08,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:16:08,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:16:08,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:16:08,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:16:08,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:16:08,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:16:08,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:16:08,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:16:08,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:16:08,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:16:08,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:16:08,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:16:08,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:16:08,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:16:08,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:16:08,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:16:08,359 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:16:08,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:16:08,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:16:08,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:16:08,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:16:08,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:16:08,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:16:08,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:16:08,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:16:08,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:16:08,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:16:08,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:16:08,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:16:08,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:16:08,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:16:08,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:16:08,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:16:08,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:16:08,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:16:08,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:16:08,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:16:08,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:16:08,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:16:08,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:16:08,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:16:08,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:16:08,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:16:08,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:16:08,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:16:08,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:16:08,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:16:08,414 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:16:08,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:16:08,415 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:16:08,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:16:08,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:16:08,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:16:08,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:16:08,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:16:08,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:16:08,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:16:08,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:16:08,417 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:16:08,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:16:08,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:16:08,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:16:08,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:16:08,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:16:08,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:16:08,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:16:08,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:16:08,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:16:08,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:16:08,419 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:16:08,419 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:16:08,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:16:08,419 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ba9401cadb8fecd59a1a331c94e3215cc972a92f03516bfd6c95164e3ec98a9 [2022-07-21 05:16:08,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:16:08,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:16:08,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:16:08,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:16:08,801 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:16:08,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-2.c [2022-07-21 05:16:08,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03533ca1/1ea20f358f924234b79f605cdc1c3c0f/FLAGc376aabe2 [2022-07-21 05:16:09,338 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:16:09,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-2.c [2022-07-21 05:16:09,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03533ca1/1ea20f358f924234b79f605cdc1c3c0f/FLAGc376aabe2 [2022-07-21 05:16:09,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03533ca1/1ea20f358f924234b79f605cdc1c3c0f [2022-07-21 05:16:09,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:16:09,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:16:09,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:16:09,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:16:09,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:16:09,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:16:09" (1/1) ... [2022-07-21 05:16:09,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328c02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:09, skipping insertion in model container [2022-07-21 05:16:09,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:16:09" (1/1) ... [2022-07-21 05:16:09,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:16:09,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:16:09,898 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/token_ring.10.cil-2.c[671,684] [2022-07-21 05:16:10,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:16:10,042 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:16:10,051 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/token_ring.10.cil-2.c[671,684] [2022-07-21 05:16:10,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:16:10,144 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:16:10,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10 WrapperNode [2022-07-21 05:16:10,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:16:10,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:16:10,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:16:10,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:16:10,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,208 INFO L137 Inliner]: procedures = 48, calls = 61, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 737 [2022-07-21 05:16:10,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:16:10,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:16:10,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:16:10,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:16:10,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:16:10,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:16:10,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:16:10,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:16:10,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (1/1) ... [2022-07-21 05:16:10,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:16:10,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:16:10,326 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) [2022-07-21 05:16:10,335 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 [2022-07-21 05:16:10,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:16:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:16:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:16:10,357 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:16:10,357 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:16:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:16:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:16:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:16:10,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:16:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:16:10,358 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:16:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:16:10,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:16:10,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:16:10,477 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:16:10,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:16:11,211 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:16:11,226 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:16:11,227 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-21 05:16:11,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:16:11 BoogieIcfgContainer [2022-07-21 05:16:11,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:16:11,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:16:11,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:16:11,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:16:11,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:16:09" (1/3) ... [2022-07-21 05:16:11,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffbcecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:16:11, skipping insertion in model container [2022-07-21 05:16:11,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:10" (2/3) ... [2022-07-21 05:16:11,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ffbcecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:16:11, skipping insertion in model container [2022-07-21 05:16:11,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:16:11" (3/3) ... [2022-07-21 05:16:11,254 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-2.c [2022-07-21 05:16:11,269 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:16:11,269 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:16:11,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:16:11,345 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@7c1c791b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@330532c8 [2022-07-21 05:16:11,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:16:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 300 states have (on average 1.6566666666666667) internal successors, (497), 302 states have internal predecessors, (497), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:16:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:11,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:11,386 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] [2022-07-21 05:16:11,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1650120313, now seen corresponding path program 1 times [2022-07-21 05:16:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:11,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837220596] [2022-07-21 05:16:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:11,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:11,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:11,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837220596] [2022-07-21 05:16:11,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837220596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:11,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:11,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:16:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634249055] [2022-07-21 05:16:11,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:11,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:16:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:11,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:16:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:16:11,945 INFO L87 Difference]: Start difference. First operand has 332 states, 300 states have (on average 1.6566666666666667) internal successors, (497), 302 states have internal predecessors, (497), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-07-21 05:16:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:13,357 INFO L93 Difference]: Finished difference Result 777 states and 1288 transitions. [2022-07-21 05:16:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:16:13,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:13,373 INFO L225 Difference]: With dead ends: 777 [2022-07-21 05:16:13,374 INFO L226 Difference]: Without dead ends: 447 [2022-07-21 05:16:13,379 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 [2022-07-21 05:16:13,382 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 884 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:13,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 913 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:16:13,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-21 05:16:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 327. [2022-07-21 05:16:13,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 296 states have (on average 1.5675675675675675) internal successors, (464), 297 states have internal predecessors, (464), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:16:13,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 512 transitions. [2022-07-21 05:16:13,458 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 512 transitions. Word has length 155 [2022-07-21 05:16:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:13,459 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 512 transitions. [2022-07-21 05:16:13,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-07-21 05:16:13,459 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 512 transitions. [2022-07-21 05:16:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:13,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:13,463 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] [2022-07-21 05:16:13,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:16:13,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:13,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1914767803, now seen corresponding path program 1 times [2022-07-21 05:16:13,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:13,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524373311] [2022-07-21 05:16:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:13,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524373311] [2022-07-21 05:16:13,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524373311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:13,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:13,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:16:13,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433396084] [2022-07-21 05:16:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:16:13,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:13,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:16:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:16:13,664 INFO L87 Difference]: Start difference. First operand 327 states and 512 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-07-21 05:16:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:14,840 INFO L93 Difference]: Finished difference Result 760 states and 1208 transitions. [2022-07-21 05:16:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:16:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:14,844 INFO L225 Difference]: With dead ends: 760 [2022-07-21 05:16:14,844 INFO L226 Difference]: Without dead ends: 447 [2022-07-21 05:16:14,846 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 [2022-07-21 05:16:14,848 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 871 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:14,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 899 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:16:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-21 05:16:14,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 327. [2022-07-21 05:16:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 296 states have (on average 1.5641891891891893) internal successors, (463), 297 states have internal predecessors, (463), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:16:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 511 transitions. [2022-07-21 05:16:14,880 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 511 transitions. Word has length 155 [2022-07-21 05:16:14,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:14,880 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 511 transitions. [2022-07-21 05:16:14,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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) [2022-07-21 05:16:14,881 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 511 transitions. [2022-07-21 05:16:14,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:14,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:14,883 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] [2022-07-21 05:16:14,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:16:14,884 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:14,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1504157437, now seen corresponding path program 1 times [2022-07-21 05:16:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:14,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236445317] [2022-07-21 05:16:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:15,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:15,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236445317] [2022-07-21 05:16:15,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236445317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:16:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971221503] [2022-07-21 05:16:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:15,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:16:15,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:16:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:16:15,110 INFO L87 Difference]: Start difference. First operand 327 states and 511 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-07-21 05:16:17,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:17,519 INFO L93 Difference]: Finished difference Result 1199 states and 1918 transitions. [2022-07-21 05:16:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:16:17,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:17,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:17,526 INFO L225 Difference]: With dead ends: 1199 [2022-07-21 05:16:17,527 INFO L226 Difference]: Without dead ends: 890 [2022-07-21 05:16:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:16:17,529 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 1322 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:17,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 1553 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:16:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-07-21 05:16:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 651. [2022-07-21 05:16:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 594 states have (on average 1.5774410774410774) internal successors, (937), 596 states have internal predecessors, (937), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-21 05:16:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1026 transitions. [2022-07-21 05:16:17,577 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1026 transitions. Word has length 155 [2022-07-21 05:16:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:17,578 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1026 transitions. [2022-07-21 05:16:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 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) [2022-07-21 05:16:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1026 transitions. [2022-07-21 05:16:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:17,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:17,580 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] [2022-07-21 05:16:17,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:16:17,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -968209535, now seen corresponding path program 1 times [2022-07-21 05:16:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:17,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627147706] [2022-07-21 05:16:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:17,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:17,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627147706] [2022-07-21 05:16:17,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627147706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:17,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:17,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407260208] [2022-07-21 05:16:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:17,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:17,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:17,810 INFO L87 Difference]: Start difference. First operand 651 states and 1026 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:20,619 INFO L93 Difference]: Finished difference Result 1982 states and 3174 transitions. [2022-07-21 05:16:20,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:20,629 INFO L225 Difference]: With dead ends: 1982 [2022-07-21 05:16:20,629 INFO L226 Difference]: Without dead ends: 1349 [2022-07-21 05:16:20,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:20,639 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1344 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:20,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 2475 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 05:16:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-21 05:16:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 952. [2022-07-21 05:16:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 869 states have (on average 1.570771001150748) internal successors, (1365), 872 states have internal predecessors, (1365), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2022-07-21 05:16:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1494 transitions. [2022-07-21 05:16:20,729 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1494 transitions. Word has length 155 [2022-07-21 05:16:20,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:20,730 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1494 transitions. [2022-07-21 05:16:20,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1494 transitions. [2022-07-21 05:16:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:20,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:20,738 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] [2022-07-21 05:16:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:16:20,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1709317311, now seen corresponding path program 1 times [2022-07-21 05:16:20,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:20,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199074153] [2022-07-21 05:16:20,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199074153] [2022-07-21 05:16:20,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199074153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:20,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:20,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803146528] [2022-07-21 05:16:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:20,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:20,889 INFO L87 Difference]: Start difference. First operand 952 states and 1494 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:23,578 INFO L93 Difference]: Finished difference Result 3136 states and 5010 transitions. [2022-07-21 05:16:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:23,592 INFO L225 Difference]: With dead ends: 3136 [2022-07-21 05:16:23,592 INFO L226 Difference]: Without dead ends: 2202 [2022-07-21 05:16:23,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:23,596 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1440 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:23,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 1708 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:16:23,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-07-21 05:16:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1555. [2022-07-21 05:16:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1420 states have (on average 1.564788732394366) internal successors, (2222), 1425 states have internal predecessors, (2222), 100 states have call successors, (100), 30 states have call predecessors, (100), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2022-07-21 05:16:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2435 transitions. [2022-07-21 05:16:23,719 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2435 transitions. Word has length 155 [2022-07-21 05:16:23,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:23,720 INFO L495 AbstractCegarLoop]: Abstraction has 1555 states and 2435 transitions. [2022-07-21 05:16:23,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:23,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2435 transitions. [2022-07-21 05:16:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:23,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:23,722 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] [2022-07-21 05:16:23,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:16:23,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash 2072783809, now seen corresponding path program 1 times [2022-07-21 05:16:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101065738] [2022-07-21 05:16:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:23,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:23,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101065738] [2022-07-21 05:16:23,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101065738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:23,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:23,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:23,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498456924] [2022-07-21 05:16:23,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:23,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:23,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:23,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:23,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:23,895 INFO L87 Difference]: Start difference. First operand 1555 states and 2435 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:26,680 INFO L93 Difference]: Finished difference Result 5352 states and 8515 transitions. [2022-07-21 05:16:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:26,700 INFO L225 Difference]: With dead ends: 5352 [2022-07-21 05:16:26,701 INFO L226 Difference]: Without dead ends: 3815 [2022-07-21 05:16:26,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:26,707 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1338 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:26,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 2459 Invalid, 2734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 05:16:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2022-07-21 05:16:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 2767. [2022-07-21 05:16:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2767 states, 2528 states have (on average 1.5609177215189873) internal successors, (3946), 2537 states have internal predecessors, (3946), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 05:16:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 4333 transitions. [2022-07-21 05:16:26,907 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 4333 transitions. Word has length 155 [2022-07-21 05:16:26,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:26,908 INFO L495 AbstractCegarLoop]: Abstraction has 2767 states and 4333 transitions. [2022-07-21 05:16:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:26,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 4333 transitions. [2022-07-21 05:16:26,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:26,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:26,911 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] [2022-07-21 05:16:26,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:16:26,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:26,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1527911235, now seen corresponding path program 1 times [2022-07-21 05:16:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:26,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800998877] [2022-07-21 05:16:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:27,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:27,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:27,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800998877] [2022-07-21 05:16:27,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800998877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:27,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:27,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048409248] [2022-07-21 05:16:27,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:27,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:27,061 INFO L87 Difference]: Start difference. First operand 2767 states and 4333 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:29,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:29,892 INFO L93 Difference]: Finished difference Result 9794 states and 15559 transitions. [2022-07-21 05:16:29,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:29,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:29,924 INFO L225 Difference]: With dead ends: 9794 [2022-07-21 05:16:29,925 INFO L226 Difference]: Without dead ends: 7045 [2022-07-21 05:16:29,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:29,935 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 1337 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:29,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 2454 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 05:16:29,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7045 states. [2022-07-21 05:16:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7045 to 5196. [2022-07-21 05:16:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 4749 states have (on average 1.5582227837439462) internal successors, (7400), 4766 states have internal predecessors, (7400), 328 states have call successors, (328), 102 states have call predecessors, (328), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-07-21 05:16:30,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 8153 transitions. [2022-07-21 05:16:30,316 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 8153 transitions. Word has length 155 [2022-07-21 05:16:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:30,317 INFO L495 AbstractCegarLoop]: Abstraction has 5196 states and 8153 transitions. [2022-07-21 05:16:30,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 8153 transitions. [2022-07-21 05:16:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:30,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:30,322 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] [2022-07-21 05:16:30,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:16:30,322 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2091895935, now seen corresponding path program 1 times [2022-07-21 05:16:30,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:30,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270424975] [2022-07-21 05:16:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:30,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:30,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270424975] [2022-07-21 05:16:30,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270424975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:30,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:30,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:30,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882753246] [2022-07-21 05:16:30,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:30,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:30,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:30,480 INFO L87 Difference]: Start difference. First operand 5196 states and 8153 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:33,557 INFO L93 Difference]: Finished difference Result 18677 states and 29705 transitions. [2022-07-21 05:16:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:33,626 INFO L225 Difference]: With dead ends: 18677 [2022-07-21 05:16:33,627 INFO L226 Difference]: Without dead ends: 13499 [2022-07-21 05:16:33,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:33,651 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1336 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:33,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 2449 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:16:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13499 states. [2022-07-21 05:16:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13499 to 10069. [2022-07-21 05:16:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10069 states, 9206 states have (on average 1.5565935259613295) internal successors, (14330), 9239 states have internal predecessors, (14330), 632 states have call successors, (632), 198 states have call predecessors, (632), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2022-07-21 05:16:34,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 15869 transitions. [2022-07-21 05:16:34,459 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 15869 transitions. Word has length 155 [2022-07-21 05:16:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:34,460 INFO L495 AbstractCegarLoop]: Abstraction has 10069 states and 15869 transitions. [2022-07-21 05:16:34,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:34,461 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 15869 transitions. [2022-07-21 05:16:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:34,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:34,468 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] [2022-07-21 05:16:34,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:16:34,469 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:34,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1255019395, now seen corresponding path program 1 times [2022-07-21 05:16:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:34,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806781143] [2022-07-21 05:16:34,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:34,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:34,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:34,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806781143] [2022-07-21 05:16:34,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806781143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:34,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:34,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:34,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038403904] [2022-07-21 05:16:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:34,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:34,614 INFO L87 Difference]: Start difference. First operand 10069 states and 15869 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:38,572 INFO L93 Difference]: Finished difference Result 36444 states and 58191 transitions. [2022-07-21 05:16:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:38,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:38,736 INFO L225 Difference]: With dead ends: 36444 [2022-07-21 05:16:38,736 INFO L226 Difference]: Without dead ends: 26393 [2022-07-21 05:16:38,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:38,777 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1335 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:38,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2444 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:16:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26393 states. [2022-07-21 05:16:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26393 to 19846. [2022-07-21 05:16:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19846 states, 18151 states have (on average 1.5556167704258719) internal successors, (28236), 18216 states have internal predecessors, (28236), 1240 states have call successors, (1240), 390 states have call predecessors, (1240), 454 states have return successors, (2033), 1303 states have call predecessors, (2033), 1240 states have call successors, (2033) [2022-07-21 05:16:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19846 states to 19846 states and 31509 transitions. [2022-07-21 05:16:40,207 INFO L78 Accepts]: Start accepts. Automaton has 19846 states and 31509 transitions. Word has length 155 [2022-07-21 05:16:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:40,208 INFO L495 AbstractCegarLoop]: Abstraction has 19846 states and 31509 transitions. [2022-07-21 05:16:40,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 19846 states and 31509 transitions. [2022-07-21 05:16:40,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:40,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:40,223 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] [2022-07-21 05:16:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:16:40,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:40,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash 670247745, now seen corresponding path program 1 times [2022-07-21 05:16:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:40,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258664749] [2022-07-21 05:16:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258664749] [2022-07-21 05:16:40,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258664749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:40,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:40,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590624187] [2022-07-21 05:16:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:40,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:40,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:40,439 INFO L87 Difference]: Start difference. First operand 19846 states and 31509 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:45,857 INFO L93 Difference]: Finished difference Result 71979 states and 115765 transitions. [2022-07-21 05:16:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:45,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:46,062 INFO L225 Difference]: With dead ends: 71979 [2022-07-21 05:16:46,062 INFO L226 Difference]: Without dead ends: 52151 [2022-07-21 05:16:46,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:46,131 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1334 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:46,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 2439 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:16:46,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52151 states. [2022-07-21 05:16:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52151 to 39463. [2022-07-21 05:16:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39463 states, 36104 states have (on average 1.5550077553733659) internal successors, (56142), 36233 states have internal predecessors, (56142), 2456 states have call successors, (2456), 774 states have call predecessors, (2456), 902 states have return successors, (4771), 2583 states have call predecessors, (4771), 2456 states have call successors, (4771) [2022-07-21 05:16:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39463 states to 39463 states and 63369 transitions. [2022-07-21 05:16:48,707 INFO L78 Accepts]: Start accepts. Automaton has 39463 states and 63369 transitions. Word has length 155 [2022-07-21 05:16:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:48,707 INFO L495 AbstractCegarLoop]: Abstraction has 39463 states and 63369 transitions. [2022-07-21 05:16:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 39463 states and 63369 transitions. [2022-07-21 05:16:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:16:48,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:48,732 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] [2022-07-21 05:16:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:16:48,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash 235742147, now seen corresponding path program 1 times [2022-07-21 05:16:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:48,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312822045] [2022-07-21 05:16:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312822045] [2022-07-21 05:16:48,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312822045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:48,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:48,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994497129] [2022-07-21 05:16:48,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:48,858 INFO L87 Difference]: Start difference. First operand 39463 states and 63369 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:16:57,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:57,768 INFO L93 Difference]: Finished difference Result 143050 states and 232763 transitions. [2022-07-21 05:16:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:16:57,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:58,242 INFO L225 Difference]: With dead ends: 143050 [2022-07-21 05:16:58,242 INFO L226 Difference]: Without dead ends: 103605 [2022-07-21 05:16:58,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:58,500 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1333 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:58,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2434 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2616 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:16:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103605 states. [2022-07-21 05:17:03,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103605 to 78824. [2022-07-21 05:17:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78824 states, 72137 states have (on average 1.554597501975408) internal successors, (112144), 72394 states have internal predecessors, (112144), 4888 states have call successors, (4888), 1542 states have call predecessors, (4888), 1798 states have return successors, (11705), 5143 states have call predecessors, (11705), 4888 states have call successors, (11705) [2022-07-21 05:17:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78824 states to 78824 states and 128737 transitions. [2022-07-21 05:17:04,392 INFO L78 Accepts]: Start accepts. Automaton has 78824 states and 128737 transitions. Word has length 155 [2022-07-21 05:17:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:04,392 INFO L495 AbstractCegarLoop]: Abstraction has 78824 states and 128737 transitions. [2022-07-21 05:17:04,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:17:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 78824 states and 128737 transitions. [2022-07-21 05:17:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 05:17:04,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:04,444 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] [2022-07-21 05:17:04,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:17:04,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:04,445 INFO L85 PathProgramCache]: Analyzing trace with hash -193916159, now seen corresponding path program 1 times [2022-07-21 05:17:04,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:04,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826521044] [2022-07-21 05:17:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:17:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:17:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:17:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:17:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:04,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:04,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826521044] [2022-07-21 05:17:04,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826521044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:04,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:04,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:04,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683024697] [2022-07-21 05:17:04,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:04,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:04,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:04,595 INFO L87 Difference]: Start difference. First operand 78824 states and 128737 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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) [2022-07-21 05:17:20,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:20,674 INFO L93 Difference]: Finished difference Result 285193 states and 472401 transitions. [2022-07-21 05:17:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:17:20,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 155 [2022-07-21 05:17:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:21,816 INFO L225 Difference]: With dead ends: 285193 [2022-07-21 05:17:21,817 INFO L226 Difference]: Without dead ends: 206387 [2022-07-21 05:17:22,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:17:22,038 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1416 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:22,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1683 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:17:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206387 states.