./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa --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 bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:25:58,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:25:58,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:25:58,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:25:58,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:25:58,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:25:58,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:25:58,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:25:58,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:25:58,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:25:58,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:25:58,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:25:58,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:25:58,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:25:58,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:25:58,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:25:58,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:25:58,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:25:58,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:25:58,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:25:58,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:25:58,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:25:58,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:25:58,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:25:58,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:25:58,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:25:58,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:25:58,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:25:58,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:25:58,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:25:58,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:25:58,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:25:58,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:25:58,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:25:58,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:25:58,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:25:58,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:25:58,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:25:58,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:25:58,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:25:58,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:25:58,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:25:58,334 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:25:58,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:25:58,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:25:58,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:25:58,335 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:25:58,335 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:25:58,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:25:58,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:25:58,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:25:58,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:25:58,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:25:58,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:25:58,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:25:58,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:25:58,339 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:25:58,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:25:58,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:25:58,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:25:58,344 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc6dc2c99e05b6915f0a2e5b5d96221c996d96767aaa6be997dea59c4d6f5f0a [2021-12-07 00:25:58,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:25:58,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:25:58,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:25:58,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:25:58,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:25:58,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2021-12-07 00:25:58,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/data/40de9ec0d/e266cb5f8c8749bf86403917628975ac/FLAG1e9176561 [2021-12-07 00:25:58,978 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:25:58,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/sv-benchmarks/c/systemc/token_ring.12.cil-2.c [2021-12-07 00:25:58,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/data/40de9ec0d/e266cb5f8c8749bf86403917628975ac/FLAG1e9176561 [2021-12-07 00:25:58,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/data/40de9ec0d/e266cb5f8c8749bf86403917628975ac [2021-12-07 00:25:58,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:25:59,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:25:59,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:25:59,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:25:59,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:25:59,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:25:58" (1/1) ... [2021-12-07 00:25:59,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209df1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59, skipping insertion in model container [2021-12-07 00:25:59,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:25:58" (1/1) ... [2021-12-07 00:25:59,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:25:59,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:25:59,156 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2021-12-07 00:25:59,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:25:59,284 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:25:59,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/sv-benchmarks/c/systemc/token_ring.12.cil-2.c[671,684] [2021-12-07 00:25:59,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:25:59,373 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:25:59,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59 WrapperNode [2021-12-07 00:25:59,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:25:59,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:25:59,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:25:59,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:25:59,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,438 INFO L137 Inliner]: procedures = 52, calls = 67, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 853 [2021-12-07 00:25:59,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:25:59,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:25:59,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:25:59,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:25:59,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:25:59,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:25:59,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:25:59,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:25:59,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (1/1) ... [2021-12-07 00:25:59,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:25:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:25:59,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:25:59,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7da87c37-9d7d-4448-b9d0-8e8720eea55b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:25:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:25:59,555 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-07 00:25:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-07 00:25:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-07 00:25:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-07 00:25:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-07 00:25:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-07 00:25:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-07 00:25:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-07 00:25:59,556 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-07 00:25:59,556 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-07 00:25:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-07 00:25:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-07 00:25:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:25:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:25:59,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:25:59,651 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:25:59,653 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:26:00,121 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:26:00,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:26:00,133 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-07 00:26:00,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:00 BoogieIcfgContainer [2021-12-07 00:26:00,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:26:00,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:26:00,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:26:00,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:26:00,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:25:58" (1/3) ... [2021-12-07 00:26:00,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798710cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:26:00, skipping insertion in model container [2021-12-07 00:26:00,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:25:59" (2/3) ... [2021-12-07 00:26:00,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798710cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:26:00, skipping insertion in model container [2021-12-07 00:26:00,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:00" (3/3) ... [2021-12-07 00:26:00,144 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-2.c [2021-12-07 00:26:00,149 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:26:00,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:26:00,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:26:00,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:26:00,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:26:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-07 00:26:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:00,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:00,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:00,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash -527385359, now seen corresponding path program 1 times [2021-12-07 00:26:00,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:00,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616104852] [2021-12-07 00:26:00,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:00,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:00,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:00,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616104852] [2021-12-07 00:26:00,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616104852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:00,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:00,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:26:00,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238905145] [2021-12-07 00:26:00,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:26:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:00,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:26:00,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:26:00,714 INFO L87 Difference]: Start difference. First operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-12-07 00:26:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:01,973 INFO L93 Difference]: Finished difference Result 895 states and 1490 transitions. [2021-12-07 00:26:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:26:01,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:01,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:01,988 INFO L225 Difference]: With dead ends: 895 [2021-12-07 00:26:01,988 INFO L226 Difference]: Without dead ends: 519 [2021-12-07 00:26:01,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:26:01,996 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1030 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:01,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 1077 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:26:02,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-07 00:26:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2021-12-07 00:26:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.5755813953488371) internal successors, (542), 345 states have internal predecessors, (542), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-07 00:26:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 594 transitions. [2021-12-07 00:26:02,068 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 594 transitions. Word has length 177 [2021-12-07 00:26:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:02,068 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 594 transitions. [2021-12-07 00:26:02,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-12-07 00:26:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 594 transitions. [2021-12-07 00:26:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:02,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:02,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:02,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:26:02,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:02,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1036164173, now seen corresponding path program 1 times [2021-12-07 00:26:02,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:02,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127289763] [2021-12-07 00:26:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:02,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:02,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:02,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127289763] [2021-12-07 00:26:02,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127289763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:02,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:02,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:26:02,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718323144] [2021-12-07 00:26:02,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:02,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:26:02,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:26:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:26:02,239 INFO L87 Difference]: Start difference. First operand 377 states and 594 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-12-07 00:26:03,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:03,349 INFO L93 Difference]: Finished difference Result 878 states and 1402 transitions. [2021-12-07 00:26:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:26:03,350 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:03,355 INFO L225 Difference]: With dead ends: 878 [2021-12-07 00:26:03,355 INFO L226 Difference]: Without dead ends: 519 [2021-12-07 00:26:03,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:26:03,358 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1017 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:03,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1063 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:26:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-07 00:26:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 377. [2021-12-07 00:26:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.572674418604651) internal successors, (541), 345 states have internal predecessors, (541), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-07 00:26:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 593 transitions. [2021-12-07 00:26:03,399 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 593 transitions. Word has length 177 [2021-12-07 00:26:03,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:03,399 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 593 transitions. [2021-12-07 00:26:03,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 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) [2021-12-07 00:26:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 593 transitions. [2021-12-07 00:26:03,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:03,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:03,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:03,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:26:03,404 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:03,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1159064693, now seen corresponding path program 1 times [2021-12-07 00:26:03,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:03,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611017911] [2021-12-07 00:26:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:03,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:03,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:03,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:03,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611017911] [2021-12-07 00:26:03,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611017911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:03,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:03,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:26:03,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342344639] [2021-12-07 00:26:03,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:03,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:26:03,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:26:03,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:26:03,579 INFO L87 Difference]: Start difference. First operand 377 states and 593 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-12-07 00:26:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:05,692 INFO L93 Difference]: Finished difference Result 1393 states and 2240 transitions. [2021-12-07 00:26:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:26:05,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:05,698 INFO L225 Difference]: With dead ends: 1393 [2021-12-07 00:26:05,698 INFO L226 Difference]: Without dead ends: 1036 [2021-12-07 00:26:05,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:26:05,700 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1552 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:05,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 1711 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-07 00:26:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-07 00:26:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 753. [2021-12-07 00:26:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5852601156069364) internal successors, (1097), 694 states have internal predecessors, (1097), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-07 00:26:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1194 transitions. [2021-12-07 00:26:05,746 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1194 transitions. Word has length 177 [2021-12-07 00:26:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:05,747 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1194 transitions. [2021-12-07 00:26:05,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 4 states have internal predecessors, (167), 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) [2021-12-07 00:26:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1194 transitions. [2021-12-07 00:26:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:05,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:05,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:05,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:26:05,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:05,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:05,749 INFO L85 PathProgramCache]: Analyzing trace with hash 283079417, now seen corresponding path program 1 times [2021-12-07 00:26:05,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:05,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199123290] [2021-12-07 00:26:05,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:05,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:05,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:05,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199123290] [2021-12-07 00:26:05,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199123290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:05,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:05,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:05,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810891839] [2021-12-07 00:26:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:05,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:05,903 INFO L87 Difference]: Start difference. First operand 753 states and 1194 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:08,522 INFO L93 Difference]: Finished difference Result 2306 states and 3714 transitions. [2021-12-07 00:26:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:08,530 INFO L225 Difference]: With dead ends: 2306 [2021-12-07 00:26:08,530 INFO L226 Difference]: Without dead ends: 1573 [2021-12-07 00:26:08,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:08,533 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1582 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:08,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 2942 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:26:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2021-12-07 00:26:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1102. [2021-12-07 00:26:08,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1013 states have (on average 1.5784797630799605) internal successors, (1599), 1016 states have internal predecessors, (1599), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-07 00:26:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1740 transitions. [2021-12-07 00:26:08,599 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1740 transitions. Word has length 177 [2021-12-07 00:26:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:08,600 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 1740 transitions. [2021-12-07 00:26:08,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1740 transitions. [2021-12-07 00:26:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:08,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:08,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:08,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:26:08,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash -328189641, now seen corresponding path program 1 times [2021-12-07 00:26:08,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:08,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505493098] [2021-12-07 00:26:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:08,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:08,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:08,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505493098] [2021-12-07 00:26:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505493098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:08,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:08,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:08,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4663916] [2021-12-07 00:26:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:08,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:08,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:08,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:08,743 INFO L87 Difference]: Start difference. First operand 1102 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:11,167 INFO L93 Difference]: Finished difference Result 3652 states and 5868 transitions. [2021-12-07 00:26:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:11,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:11,178 INFO L225 Difference]: With dead ends: 3652 [2021-12-07 00:26:11,179 INFO L226 Difference]: Without dead ends: 2570 [2021-12-07 00:26:11,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:11,182 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1691 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:11,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1710 Valid, 2042 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-07 00:26:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-12-07 00:26:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1801. [2021-12-07 00:26:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1656 states have (on average 1.5724637681159421) internal successors, (2604), 1661 states have internal predecessors, (2604), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-07 00:26:11,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2837 transitions. [2021-12-07 00:26:11,286 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2837 transitions. Word has length 177 [2021-12-07 00:26:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:11,287 INFO L470 AbstractCegarLoop]: Abstraction has 1801 states and 2837 transitions. [2021-12-07 00:26:11,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:11,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2837 transitions. [2021-12-07 00:26:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:11,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:11,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:11,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:26:11,289 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1733381319, now seen corresponding path program 1 times [2021-12-07 00:26:11,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:11,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209035313] [2021-12-07 00:26:11,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:11,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:11,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:11,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209035313] [2021-12-07 00:26:11,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209035313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:11,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:11,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:11,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982197611] [2021-12-07 00:26:11,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:11,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:11,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:11,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:11,416 INFO L87 Difference]: Start difference. First operand 1801 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:14,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:14,059 INFO L93 Difference]: Finished difference Result 6239 states and 9981 transitions. [2021-12-07 00:26:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:14,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:14,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:14,077 INFO L225 Difference]: With dead ends: 6239 [2021-12-07 00:26:14,077 INFO L226 Difference]: Without dead ends: 4458 [2021-12-07 00:26:14,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:14,082 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 1577 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:14,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 2926 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:26:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4458 states. [2021-12-07 00:26:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4458 to 3200. [2021-12-07 00:26:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2943 states have (on average 1.5677879714576963) internal successors, (4614), 2952 states have internal predecessors, (4614), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-07 00:26:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5037 transitions. [2021-12-07 00:26:14,274 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5037 transitions. Word has length 177 [2021-12-07 00:26:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:14,274 INFO L470 AbstractCegarLoop]: Abstraction has 3200 states and 5037 transitions. [2021-12-07 00:26:14,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5037 transitions. [2021-12-07 00:26:14,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:14,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:14,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:14,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:26:14,277 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash 160952567, now seen corresponding path program 1 times [2021-12-07 00:26:14,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524145864] [2021-12-07 00:26:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:14,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:14,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:14,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524145864] [2021-12-07 00:26:14,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524145864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:14,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:14,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:14,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394069989] [2021-12-07 00:26:14,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:14,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:14,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:14,404 INFO L87 Difference]: Start difference. First operand 3200 states and 5037 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:17,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:17,301 INFO L93 Difference]: Finished difference Result 11405 states and 18211 transitions. [2021-12-07 00:26:17,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:17,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:17,331 INFO L225 Difference]: With dead ends: 11405 [2021-12-07 00:26:17,332 INFO L226 Difference]: Without dead ends: 8225 [2021-12-07 00:26:17,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:17,339 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 1572 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:17,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1591 Valid, 2918 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3042 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:26:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2021-12-07 00:26:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 6012. [2021-12-07 00:26:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 5531 states have (on average 1.5653588862773458) internal successors, (8658), 5548 states have internal predecessors, (8658), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-07 00:26:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9479 transitions. [2021-12-07 00:26:17,754 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9479 transitions. Word has length 177 [2021-12-07 00:26:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:17,755 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 9479 transitions. [2021-12-07 00:26:17,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:17,755 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9479 transitions. [2021-12-07 00:26:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:17,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:17,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:17,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:26:17,760 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash -762214859, now seen corresponding path program 1 times [2021-12-07 00:26:17,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:17,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875359856] [2021-12-07 00:26:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:17,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:17,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875359856] [2021-12-07 00:26:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875359856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:17,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:17,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:17,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428483596] [2021-12-07 00:26:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:17,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:17,895 INFO L87 Difference]: Start difference. First operand 6012 states and 9479 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:21,229 INFO L93 Difference]: Finished difference Result 21755 states and 34763 transitions. [2021-12-07 00:26:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:21,281 INFO L225 Difference]: With dead ends: 21755 [2021-12-07 00:26:21,281 INFO L226 Difference]: Without dead ends: 15763 [2021-12-07 00:26:21,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:21,296 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1571 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:21,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1590 Valid, 2913 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:26:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15763 states. [2021-12-07 00:26:21,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15763 to 11649. [2021-12-07 00:26:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11649 states, 10720 states have (on average 1.5638059701492537) internal successors, (16764), 10753 states have internal predecessors, (16764), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-07 00:26:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11649 states to 11649 states and 18435 transitions. [2021-12-07 00:26:22,003 INFO L78 Accepts]: Start accepts. Automaton has 11649 states and 18435 transitions. Word has length 177 [2021-12-07 00:26:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:22,003 INFO L470 AbstractCegarLoop]: Abstraction has 11649 states and 18435 transitions. [2021-12-07 00:26:22,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:22,004 INFO L276 IsEmpty]: Start isEmpty. Operand 11649 states and 18435 transitions. [2021-12-07 00:26:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:22,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:22,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:22,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:26:22,010 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash -376352457, now seen corresponding path program 1 times [2021-12-07 00:26:22,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:22,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873886671] [2021-12-07 00:26:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:22,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:22,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:22,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:22,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873886671] [2021-12-07 00:26:22,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873886671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:22,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:22,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:22,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975294148] [2021-12-07 00:26:22,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:22,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:22,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:22,142 INFO L87 Difference]: Start difference. First operand 11649 states and 18435 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:26,330 INFO L93 Difference]: Finished difference Result 42454 states and 68057 transitions. [2021-12-07 00:26:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:26,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:26,411 INFO L225 Difference]: With dead ends: 42454 [2021-12-07 00:26:26,411 INFO L226 Difference]: Without dead ends: 30825 [2021-12-07 00:26:26,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:26,441 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 1570 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 3108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:26,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 2908 Invalid, 3108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:26:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30825 states. [2021-12-07 00:26:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30825 to 22954. [2021-12-07 00:26:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22954 states, 21129 states have (on average 1.562875668512471) internal successors, (33022), 21194 states have internal predecessors, (33022), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-07 00:26:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22954 states to 22954 states and 36555 transitions. [2021-12-07 00:26:27,811 INFO L78 Accepts]: Start accepts. Automaton has 22954 states and 36555 transitions. Word has length 177 [2021-12-07 00:26:27,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:27,811 INFO L470 AbstractCegarLoop]: Abstraction has 22954 states and 36555 transitions. [2021-12-07 00:26:27,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22954 states and 36555 transitions. [2021-12-07 00:26:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:27,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:27,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:27,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:26:27,822 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:27,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -640999947, now seen corresponding path program 1 times [2021-12-07 00:26:27,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859279640] [2021-12-07 00:26:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:27,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:27,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:27,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859279640] [2021-12-07 00:26:27,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859279640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:27,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:27,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:27,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019806571] [2021-12-07 00:26:27,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:27,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:27,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:27,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:27,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:27,928 INFO L87 Difference]: Start difference. First operand 22954 states and 36555 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:34,237 INFO L93 Difference]: Finished difference Result 83853 states and 135247 transitions. [2021-12-07 00:26:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:34,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:34,392 INFO L225 Difference]: With dead ends: 83853 [2021-12-07 00:26:34,392 INFO L226 Difference]: Without dead ends: 60919 [2021-12-07 00:26:34,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:34,443 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 1569 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:34,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 2903 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:26:34,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60919 states. [2021-12-07 00:26:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60919 to 45627. [2021-12-07 00:26:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45627 states, 42010 states have (on average 1.562294691740062) internal successors, (65632), 42139 states have internal predecessors, (65632), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2021-12-07 00:26:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45627 states to 45627 states and 73375 transitions. [2021-12-07 00:26:37,104 INFO L78 Accepts]: Start accepts. Automaton has 45627 states and 73375 transitions. Word has length 177 [2021-12-07 00:26:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:37,104 INFO L470 AbstractCegarLoop]: Abstraction has 45627 states and 73375 transitions. [2021-12-07 00:26:37,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 45627 states and 73375 transitions. [2021-12-07 00:26:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:37,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:37,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:37,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:26:37,120 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1290125687, now seen corresponding path program 1 times [2021-12-07 00:26:37,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:37,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646234440] [2021-12-07 00:26:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:37,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:37,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:37,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646234440] [2021-12-07 00:26:37,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646234440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:37,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:37,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:37,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816974806] [2021-12-07 00:26:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:37,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:37,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:37,224 INFO L87 Difference]: Start difference. First operand 45627 states and 73375 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:47,696 INFO L93 Difference]: Finished difference Result 166652 states and 271477 transitions. [2021-12-07 00:26:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:26:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:26:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:48,049 INFO L225 Difference]: With dead ends: 166652 [2021-12-07 00:26:48,050 INFO L226 Difference]: Without dead ends: 121045 [2021-12-07 00:26:48,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:48,165 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 1568 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:48,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 2898 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-07 00:26:48,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121045 states. [2021-12-07 00:26:53,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121045 to 91100. [2021-12-07 00:26:53,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91100 states, 83899 states have (on average 1.5619018105102564) internal successors, (131042), 84156 states have internal predecessors, (131042), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2021-12-07 00:26:53,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91100 states to 91100 states and 148663 transitions. [2021-12-07 00:26:53,838 INFO L78 Accepts]: Start accepts. Automaton has 91100 states and 148663 transitions. Word has length 177 [2021-12-07 00:26:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:53,839 INFO L470 AbstractCegarLoop]: Abstraction has 91100 states and 148663 transitions. [2021-12-07 00:26:53,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:26:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 91100 states and 148663 transitions. [2021-12-07 00:26:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:26:53,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:53,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:53,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:26:53,871 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:26:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:53,871 INFO L85 PathProgramCache]: Analyzing trace with hash -33053259, now seen corresponding path program 1 times [2021-12-07 00:26:53,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:53,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59713318] [2021-12-07 00:26:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:53,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:26:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:26:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:26:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:26:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:26:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:53,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:53,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59713318] [2021-12-07 00:26:53,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59713318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:53,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:53,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:26:53,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660498917] [2021-12-07 00:26:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:53,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:26:53,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:26:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:26:53,977 INFO L87 Difference]: Start difference. First operand 91100 states and 148663 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:27:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:13,209 INFO L93 Difference]: Finished difference Result 332251 states and 549579 transitions. [2021-12-07 00:27:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:27:13,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:27:13,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:14,022 INFO L225 Difference]: With dead ends: 332251 [2021-12-07 00:27:14,022 INFO L226 Difference]: Without dead ends: 241171 [2021-12-07 00:27:14,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:27:14,292 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1667 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 2676 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:14,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1686 Valid, 2017 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2676 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-07 00:27:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241171 states. [2021-12-07 00:27:25,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241171 to 182301. [2021-12-07 00:27:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182301 states, 167932 states have (on average 1.5616082700140532) internal successors, (262244), 168445 states have internal predecessors, (262244), 10778 states have call successors, (10778), 3078 states have call predecessors, (10778), 3590 states have return successors, (30973), 11289 states have call predecessors, (30973), 10778 states have call successors, (30973) [2021-12-07 00:27:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182301 states to 182301 states and 303995 transitions. [2021-12-07 00:27:26,608 INFO L78 Accepts]: Start accepts. Automaton has 182301 states and 303995 transitions. Word has length 177 [2021-12-07 00:27:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:26,608 INFO L470 AbstractCegarLoop]: Abstraction has 182301 states and 303995 transitions. [2021-12-07 00:27:26,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:27:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 182301 states and 303995 transitions. [2021-12-07 00:27:26,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:27:26,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:26,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:26,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:27:26,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:27:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1863926199, now seen corresponding path program 1 times [2021-12-07 00:27:26,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:26,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684931165] [2021-12-07 00:27:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:26,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:27:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:27:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:27:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:27:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:27:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:27:26,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:26,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684931165] [2021-12-07 00:27:26,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684931165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:27:26,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:27:26,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:27:26,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705591134] [2021-12-07 00:27:26,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:27:26,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:27:26,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:26,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:27:26,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:27:26,779 INFO L87 Difference]: Start difference. First operand 182301 states and 303995 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:28:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:04,576 INFO L93 Difference]: Finished difference Result 663450 states and 1122897 transitions. [2021-12-07 00:28:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:28:04,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:28:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:06,590 INFO L225 Difference]: With dead ends: 663450 [2021-12-07 00:28:06,590 INFO L226 Difference]: Without dead ends: 481169 [2021-12-07 00:28:07,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:28:07,288 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 1569 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2991 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:07,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 2886 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2991 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-07 00:28:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481169 states. [2021-12-07 00:28:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481169 to 365214. [2021-12-07 00:28:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365214 states, 336509 states have (on average 1.561366857944364) internal successors, (525414), 337534 states have internal predecessors, (525414), 21530 states have call successors, (21530), 6150 states have call predecessors, (21530), 7174 states have return successors, (81603), 22553 states have call predecessors, (81603), 21530 states have call successors, (81603) [2021-12-07 00:28:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365214 states to 365214 states and 628547 transitions. [2021-12-07 00:28:34,117 INFO L78 Accepts]: Start accepts. Automaton has 365214 states and 628547 transitions. Word has length 177 [2021-12-07 00:28:34,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:34,118 INFO L470 AbstractCegarLoop]: Abstraction has 365214 states and 628547 transitions. [2021-12-07 00:28:34,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:28:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 365214 states and 628547 transitions. [2021-12-07 00:28:34,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:28:34,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:34,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:28:34,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:28:34,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2092753547, now seen corresponding path program 1 times [2021-12-07 00:28:34,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:34,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270413633] [2021-12-07 00:28:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:34,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:28:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:28:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:28:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:28:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:28:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:28:34,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:34,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270413633] [2021-12-07 00:28:34,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270413633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:34,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:34,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:28:34,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262261471] [2021-12-07 00:28:34,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:34,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:28:34,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:34,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:28:34,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:28:34,349 INFO L87 Difference]: Start difference. First operand 365214 states and 628547 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:30:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:22,192 INFO L93 Difference]: Finished difference Result 1506071 states and 2597733 transitions. [2021-12-07 00:30:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:30:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:30:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:27,219 INFO L225 Difference]: With dead ends: 1506071 [2021-12-07 00:30:27,220 INFO L226 Difference]: Without dead ends: 1140877 [2021-12-07 00:30:29,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:30:29,240 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 2050 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:29,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 2867 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-07 00:30:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140877 states. [2021-12-07 00:31:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140877 to 730016. [2021-12-07 00:31:27,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730016 states, 673663 states have (on average 1.563526570406865) internal successors, (1053290), 675712 states have internal predecessors, (1053290), 42010 states have call successors, (42010), 12294 states have call predecessors, (42010), 14342 states have return successors, (221205), 44057 states have call predecessors, (221205), 42010 states have call successors, (221205) [2021-12-07 00:31:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730016 states to 730016 states and 1316505 transitions. [2021-12-07 00:31:31,875 INFO L78 Accepts]: Start accepts. Automaton has 730016 states and 1316505 transitions. Word has length 177 [2021-12-07 00:31:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:31,876 INFO L470 AbstractCegarLoop]: Abstraction has 730016 states and 1316505 transitions. [2021-12-07 00:31:31,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:31:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 730016 states and 1316505 transitions. [2021-12-07 00:31:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:31:32,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:32,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:32,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:31:32,236 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:32,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1661784243, now seen corresponding path program 1 times [2021-12-07 00:31:32,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:32,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29761373] [2021-12-07 00:31:32,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:32,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-07 00:31:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-07 00:31:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:31:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:31:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-07 00:31:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:31:32,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:32,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29761373] [2021-12-07 00:31:32,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29761373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:32,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:32,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:31:32,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380486302] [2021-12-07 00:31:32,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:32,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:31:32,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:31:32,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:31:32,329 INFO L87 Difference]: Start difference. First operand 730016 states and 1316505 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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) [2021-12-07 00:35:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:24,001 INFO L93 Difference]: Finished difference Result 2978327 states and 5377709 transitions. [2021-12-07 00:35:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:35:24,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 5 states have internal predecessors, (167), 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 177 [2021-12-07 00:35:24,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:36,398 INFO L225 Difference]: With dead ends: 2978327 [2021-12-07 00:35:36,398 INFO L226 Difference]: Without dead ends: 2248331 [2021-12-07 00:35:41,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:35:41,491 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 1675 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1693 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 3593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:41,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1693 Valid, 3046 Invalid, 3593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:35:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248331 states.