./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.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_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/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_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/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_60b0fbc9-6901-4401-98b4-660a476de4c6/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 cf92f342b2da275c63d151f2d4ed52683d7003506826ae2897efde5e3c66195f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:29:35,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:29:35,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:29:35,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:29:35,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:29:35,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:29:35,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:29:35,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:29:35,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:29:35,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:29:35,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:29:35,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:29:35,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:29:35,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:29:35,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:29:35,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:29:35,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:29:35,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:29:35,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:29:35,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:29:35,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:29:35,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:29:35,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:29:35,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:29:35,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:29:35,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:29:35,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:29:35,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:29:35,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:29:35,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:29:35,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:29:35,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:29:35,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:29:35,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:29:35,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:29:35,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:29:35,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:29:35,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:29:35,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:29:35,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:29:35,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:29:35,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:29:35,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:29:35,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:29:35,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:29:35,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:29:35,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:29:35,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:29:35,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:29:35,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:29:35,317 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:29:35,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:29:35,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:29:35,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:29:35,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:29:35,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:29:35,320 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:29:35,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:29:35,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:29:35,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:29:35,321 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_60b0fbc9-6901-4401-98b4-660a476de4c6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf92f342b2da275c63d151f2d4ed52683d7003506826ae2897efde5e3c66195f [2021-12-07 00:29:35,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:29:35,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:29:35,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:29:35,529 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:29:35,530 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:29:35,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2021-12-07 00:29:35,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/data/7ba1d47e4/6ec32f2dbb6e4acfbca6d2e207cc760c/FLAG1e588b7bd [2021-12-07 00:29:35,980 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:29:35,981 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2021-12-07 00:29:35,990 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/data/7ba1d47e4/6ec32f2dbb6e4acfbca6d2e207cc760c/FLAG1e588b7bd [2021-12-07 00:29:36,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/data/7ba1d47e4/6ec32f2dbb6e4acfbca6d2e207cc760c [2021-12-07 00:29:36,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:29:36,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:29:36,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:29:36,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:29:36,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:29:36,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e31f4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36, skipping insertion in model container [2021-12-07 00:29:36,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:29:36,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:29:36,210 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_60b0fbc9-6901-4401-98b4-660a476de4c6/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2021-12-07 00:29:36,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:29:36,220 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:29:36,262 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_60b0fbc9-6901-4401-98b4-660a476de4c6/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2021-12-07 00:29:36,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:29:36,274 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:29:36,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36 WrapperNode [2021-12-07 00:29:36,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:29:36,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:29:36,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:29:36,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:29:36,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,317 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 479 [2021-12-07 00:29:36,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:29:36,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:29:36,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:29:36,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:29:36,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:29:36,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:29:36,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:29:36,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:29:36,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (1/1) ... [2021-12-07 00:29:36,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:29:36,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:36,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:29:36,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60b0fbc9-6901-4401-98b4-660a476de4c6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:29:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:29:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:29:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:29:36,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:29:36,509 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:29:36,510 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:29:36,850 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:29:36,857 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:29:36,857 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:29:36,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:36 BoogieIcfgContainer [2021-12-07 00:29:36,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:29:36,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:29:36,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:29:36,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:29:36,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:29:36" (1/3) ... [2021-12-07 00:29:36,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1350259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:36, skipping insertion in model container [2021-12-07 00:29:36,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:36" (2/3) ... [2021-12-07 00:29:36,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1350259a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:36, skipping insertion in model container [2021-12-07 00:29:36,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:36" (3/3) ... [2021-12-07 00:29:36,864 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2021-12-07 00:29:36,868 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:29:36,868 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:29:36,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:29:36,908 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 00:29:36,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:29:36,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:29:36,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:36,928 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] [2021-12-07 00:29:36,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:36,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1418405445, now seen corresponding path program 1 times [2021-12-07 00:29:36,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:36,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973805147] [2021-12-07 00:29:36,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:36,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,087 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 00:29:37,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973805147] [2021-12-07 00:29:37,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973805147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:29:37,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261657240] [2021-12-07 00:29:37,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:29:37,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:29:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:29:37,116 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7588652482269505) internal successors, (248), 142 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,139 INFO L93 Difference]: Finished difference Result 227 states and 388 transitions. [2021-12-07 00:29:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:29:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-07 00:29:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:37,149 INFO L225 Difference]: With dead ends: 227 [2021-12-07 00:29:37,149 INFO L226 Difference]: Without dead ends: 139 [2021-12-07 00:29:37,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:29:37,154 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:37,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-07 00:29:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-12-07 00:29:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.7463768115942029) internal successors, (241), 138 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 241 transitions. [2021-12-07 00:29:37,198 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 241 transitions. Word has length 37 [2021-12-07 00:29:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:37,199 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 241 transitions. [2021-12-07 00:29:37,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 241 transitions. [2021-12-07 00:29:37,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-07 00:29:37,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:37,202 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] [2021-12-07 00:29:37,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:29:37,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:37,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 2058913401, now seen corresponding path program 1 times [2021-12-07 00:29:37,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:37,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903516495] [2021-12-07 00:29:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:37,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,300 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 00:29:37,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903516495] [2021-12-07 00:29:37,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903516495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:37,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798342846] [2021-12-07 00:29:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:37,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:37,304 INFO L87 Difference]: Start difference. First operand 139 states and 241 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,376 INFO L93 Difference]: Finished difference Result 222 states and 378 transitions. [2021-12-07 00:29:37,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-07 00:29:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:37,378 INFO L225 Difference]: With dead ends: 222 [2021-12-07 00:29:37,378 INFO L226 Difference]: Without dead ends: 139 [2021-12-07 00:29:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:37,380 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 3 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:37,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 923 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-07 00:29:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-12-07 00:29:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5289855072463767) internal successors, (211), 138 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 211 transitions. [2021-12-07 00:29:37,389 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 211 transitions. Word has length 37 [2021-12-07 00:29:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:37,389 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 211 transitions. [2021-12-07 00:29:37,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 211 transitions. [2021-12-07 00:29:37,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-07 00:29:37,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:37,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:37,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:29:37,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash -415118785, now seen corresponding path program 1 times [2021-12-07 00:29:37,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539920589] [2021-12-07 00:29:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:37,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,468 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 00:29:37,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539920589] [2021-12-07 00:29:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539920589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:37,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887573738] [2021-12-07 00:29:37,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:37,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,470 INFO L87 Difference]: Start difference. First operand 139 states and 211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,501 INFO L93 Difference]: Finished difference Result 287 states and 459 transitions. [2021-12-07 00:29:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-07 00:29:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:37,504 INFO L225 Difference]: With dead ends: 287 [2021-12-07 00:29:37,504 INFO L226 Difference]: Without dead ends: 208 [2021-12-07 00:29:37,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,506 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:37,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 374 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-07 00:29:37,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2021-12-07 00:29:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.5609756097560976) internal successors, (320), 205 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 320 transitions. [2021-12-07 00:29:37,524 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 320 transitions. Word has length 66 [2021-12-07 00:29:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:37,525 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 320 transitions. [2021-12-07 00:29:37,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,525 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 320 transitions. [2021-12-07 00:29:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 00:29:37,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:37,529 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] [2021-12-07 00:29:37,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:29:37,529 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash 928134868, now seen corresponding path program 1 times [2021-12-07 00:29:37,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:37,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738896542] [2021-12-07 00:29:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:37,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,607 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 00:29:37,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738896542] [2021-12-07 00:29:37,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738896542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:37,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467503631] [2021-12-07 00:29:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:37,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,609 INFO L87 Difference]: Start difference. First operand 206 states and 320 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,632 INFO L93 Difference]: Finished difference Result 482 states and 776 transitions. [2021-12-07 00:29:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:37,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-07 00:29:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:37,635 INFO L225 Difference]: With dead ends: 482 [2021-12-07 00:29:37,636 INFO L226 Difference]: Without dead ends: 336 [2021-12-07 00:29:37,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,638 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 109 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 386 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-07 00:29:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2021-12-07 00:29:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.5945945945945945) internal successors, (531), 333 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 531 transitions. [2021-12-07 00:29:37,658 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 531 transitions. Word has length 68 [2021-12-07 00:29:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 531 transitions. [2021-12-07 00:29:37,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 531 transitions. [2021-12-07 00:29:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-07 00:29:37,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:37,661 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] [2021-12-07 00:29:37,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:29:37,661 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1295175881, now seen corresponding path program 1 times [2021-12-07 00:29:37,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809236793] [2021-12-07 00:29:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:37,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,722 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 00:29:37,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809236793] [2021-12-07 00:29:37,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809236793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:37,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073037612] [2021-12-07 00:29:37,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:37,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:37,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,725 INFO L87 Difference]: Start difference. First operand 334 states and 531 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,752 INFO L93 Difference]: Finished difference Result 850 states and 1381 transitions. [2021-12-07 00:29:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:37,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-07 00:29:37,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:37,755 INFO L225 Difference]: With dead ends: 850 [2021-12-07 00:29:37,755 INFO L226 Difference]: Without dead ends: 576 [2021-12-07 00:29:37,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:37,757 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 103 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:37,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 387 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-07 00:29:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2021-12-07 00:29:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.6108202443280977) internal successors, (923), 573 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 923 transitions. [2021-12-07 00:29:37,790 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 923 transitions. Word has length 70 [2021-12-07 00:29:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:37,791 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 923 transitions. [2021-12-07 00:29:37,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 923 transitions. [2021-12-07 00:29:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-07 00:29:37,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:37,793 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] [2021-12-07 00:29:37,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:29:37,794 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -367652834, now seen corresponding path program 1 times [2021-12-07 00:29:37,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728186126] [2021-12-07 00:29:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:37,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:37,863 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 00:29:37,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:37,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728186126] [2021-12-07 00:29:37,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728186126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:37,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:37,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:37,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651583272] [2021-12-07 00:29:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:37,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:37,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:37,865 INFO L87 Difference]: Start difference. First operand 574 states and 923 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:37,990 INFO L93 Difference]: Finished difference Result 2450 states and 4045 transitions. [2021-12-07 00:29:37,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:29:37,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-07 00:29:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,003 INFO L225 Difference]: With dead ends: 2450 [2021-12-07 00:29:38,003 INFO L226 Difference]: Without dead ends: 1936 [2021-12-07 00:29:38,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:38,006 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 778 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [778 Valid, 1306 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2021-12-07 00:29:38,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1023. [2021-12-07 00:29:38,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1022 states have (on average 1.6252446183953033) internal successors, (1661), 1022 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1661 transitions. [2021-12-07 00:29:38,068 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1661 transitions. Word has length 72 [2021-12-07 00:29:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:38,069 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1661 transitions. [2021-12-07 00:29:38,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1661 transitions. [2021-12-07 00:29:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-07 00:29:38,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:38,071 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] [2021-12-07 00:29:38,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:29:38,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -435168554, now seen corresponding path program 1 times [2021-12-07 00:29:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435985769] [2021-12-07 00:29:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:38,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:38,124 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 00:29:38,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:38,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435985769] [2021-12-07 00:29:38,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435985769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:38,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:38,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:38,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967327370] [2021-12-07 00:29:38,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:38,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:38,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:38,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:38,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:38,126 INFO L87 Difference]: Start difference. First operand 1023 states and 1661 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,213 INFO L93 Difference]: Finished difference Result 2972 states and 4898 transitions. [2021-12-07 00:29:38,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:29:38,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-07 00:29:38,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,225 INFO L225 Difference]: With dead ends: 2972 [2021-12-07 00:29:38,225 INFO L226 Difference]: Without dead ends: 2009 [2021-12-07 00:29:38,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:38,228 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 385 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 689 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2009 states. [2021-12-07 00:29:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2009 to 1507. [2021-12-07 00:29:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 1.6328021248339974) internal successors, (2459), 1506 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2459 transitions. [2021-12-07 00:29:38,273 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2459 transitions. Word has length 73 [2021-12-07 00:29:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:38,273 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 2459 transitions. [2021-12-07 00:29:38,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2459 transitions. [2021-12-07 00:29:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:29:38,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:38,275 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] [2021-12-07 00:29:38,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:29:38,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 152415701, now seen corresponding path program 1 times [2021-12-07 00:29:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594281291] [2021-12-07 00:29:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:38,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:38,316 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 00:29:38,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:38,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594281291] [2021-12-07 00:29:38,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594281291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:38,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:38,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:38,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031124164] [2021-12-07 00:29:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:38,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:38,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:38,318 INFO L87 Difference]: Start difference. First operand 1507 states and 2459 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,370 INFO L93 Difference]: Finished difference Result 2973 states and 4868 transitions. [2021-12-07 00:29:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-07 00:29:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,380 INFO L225 Difference]: With dead ends: 2973 [2021-12-07 00:29:38,380 INFO L226 Difference]: Without dead ends: 2147 [2021-12-07 00:29:38,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:38,382 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 110 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 456 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-12-07 00:29:38,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2145. [2021-12-07 00:29:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2144 states have (on average 1.625) internal successors, (3484), 2144 states have internal predecessors, (3484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3484 transitions. [2021-12-07 00:29:38,449 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3484 transitions. Word has length 74 [2021-12-07 00:29:38,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:38,449 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 3484 transitions. [2021-12-07 00:29:38,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3484 transitions. [2021-12-07 00:29:38,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:29:38,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:38,451 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] [2021-12-07 00:29:38,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:29:38,451 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1935815765, now seen corresponding path program 1 times [2021-12-07 00:29:38,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:38,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086548530] [2021-12-07 00:29:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:38,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:38,499 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 00:29:38,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086548530] [2021-12-07 00:29:38,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086548530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:38,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:38,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:38,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15234940] [2021-12-07 00:29:38,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:38,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:38,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:38,501 INFO L87 Difference]: Start difference. First operand 2145 states and 3484 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,667 INFO L93 Difference]: Finished difference Result 6648 states and 10865 transitions. [2021-12-07 00:29:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:29:38,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-07 00:29:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,690 INFO L225 Difference]: With dead ends: 6648 [2021-12-07 00:29:38,690 INFO L226 Difference]: Without dead ends: 4593 [2021-12-07 00:29:38,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:38,694 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 384 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 686 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2021-12-07 00:29:38,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 3357. [2021-12-07 00:29:38,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3356 states have (on average 1.6215733015494636) internal successors, (5442), 3356 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 5442 transitions. [2021-12-07 00:29:38,828 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 5442 transitions. Word has length 74 [2021-12-07 00:29:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:38,828 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 5442 transitions. [2021-12-07 00:29:38,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 5442 transitions. [2021-12-07 00:29:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:29:38,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:38,830 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] [2021-12-07 00:29:38,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:29:38,830 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:38,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2130170379, now seen corresponding path program 1 times [2021-12-07 00:29:38,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:38,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18534535] [2021-12-07 00:29:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:38,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:38,862 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 00:29:38,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18534535] [2021-12-07 00:29:38,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18534535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:38,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:38,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:38,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920291306] [2021-12-07 00:29:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:38,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:38,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:38,864 INFO L87 Difference]: Start difference. First operand 3357 states and 5442 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,974 INFO L93 Difference]: Finished difference Result 6689 states and 10862 transitions. [2021-12-07 00:29:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:38,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-07 00:29:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,995 INFO L225 Difference]: With dead ends: 6689 [2021-12-07 00:29:38,995 INFO L226 Difference]: Without dead ends: 4777 [2021-12-07 00:29:38,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:38,999 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 104 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 439 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-12-07 00:29:39,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4775. [2021-12-07 00:29:39,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4775 states, 4774 states have (on average 1.6108085462924173) internal successors, (7690), 4774 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4775 states to 4775 states and 7690 transitions. [2021-12-07 00:29:39,141 INFO L78 Accepts]: Start accepts. Automaton has 4775 states and 7690 transitions. Word has length 74 [2021-12-07 00:29:39,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:39,141 INFO L470 AbstractCegarLoop]: Abstraction has 4775 states and 7690 transitions. [2021-12-07 00:29:39,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4775 states and 7690 transitions. [2021-12-07 00:29:39,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-07 00:29:39,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:39,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:39,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:29:39,143 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:39,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:39,143 INFO L85 PathProgramCache]: Analyzing trace with hash 339461557, now seen corresponding path program 1 times [2021-12-07 00:29:39,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:39,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180151560] [2021-12-07 00:29:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:39,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,172 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 00:29:39,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:39,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180151560] [2021-12-07 00:29:39,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180151560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:39,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:39,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:39,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069537923] [2021-12-07 00:29:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:39,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:39,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:39,174 INFO L87 Difference]: Start difference. First operand 4775 states and 7690 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:39,316 INFO L93 Difference]: Finished difference Result 10486 states and 17043 transitions. [2021-12-07 00:29:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-07 00:29:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:39,351 INFO L225 Difference]: With dead ends: 10486 [2021-12-07 00:29:39,351 INFO L226 Difference]: Without dead ends: 7079 [2021-12-07 00:29:39,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:39,357 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 116 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:39,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2021-12-07 00:29:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 7077. [2021-12-07 00:29:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7077 states, 7076 states have (on average 1.6075466365178066) internal successors, (11375), 7076 states have internal predecessors, (11375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7077 states to 7077 states and 11375 transitions. [2021-12-07 00:29:39,606 INFO L78 Accepts]: Start accepts. Automaton has 7077 states and 11375 transitions. Word has length 74 [2021-12-07 00:29:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:39,606 INFO L470 AbstractCegarLoop]: Abstraction has 7077 states and 11375 transitions. [2021-12-07 00:29:39,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7077 states and 11375 transitions. [2021-12-07 00:29:39,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-07 00:29:39,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:39,608 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] [2021-12-07 00:29:39,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:29:39,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:39,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1704077331, now seen corresponding path program 1 times [2021-12-07 00:29:39,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475374341] [2021-12-07 00:29:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:39,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,646 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 00:29:39,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475374341] [2021-12-07 00:29:39,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475374341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:39,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:39,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:39,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921405284] [2021-12-07 00:29:39,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:39,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:39,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:39,647 INFO L87 Difference]: Start difference. First operand 7077 states and 11375 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:39,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:39,989 INFO L93 Difference]: Finished difference Result 22184 states and 35744 transitions. [2021-12-07 00:29:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:29:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-07 00:29:39,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:40,023 INFO L225 Difference]: With dead ends: 22184 [2021-12-07 00:29:40,024 INFO L226 Difference]: Without dead ends: 15193 [2021-12-07 00:29:40,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:40,040 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 382 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:40,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 688 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:40,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15193 states. [2021-12-07 00:29:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15193 to 11092. [2021-12-07 00:29:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11092 states, 11091 states have (on average 1.5980524749797134) internal successors, (17724), 11091 states have internal predecessors, (17724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:40,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11092 states to 11092 states and 17724 transitions. [2021-12-07 00:29:40,370 INFO L78 Accepts]: Start accepts. Automaton has 11092 states and 17724 transitions. Word has length 75 [2021-12-07 00:29:40,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:40,370 INFO L470 AbstractCegarLoop]: Abstraction has 11092 states and 17724 transitions. [2021-12-07 00:29:40,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:40,371 INFO L276 IsEmpty]: Start isEmpty. Operand 11092 states and 17724 transitions. [2021-12-07 00:29:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 00:29:40,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:40,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:40,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:29:40,372 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:40,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 931672261, now seen corresponding path program 1 times [2021-12-07 00:29:40,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:40,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431443424] [2021-12-07 00:29:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:40,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:40,456 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 00:29:40,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:40,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431443424] [2021-12-07 00:29:40,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431443424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:40,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:40,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:40,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239708818] [2021-12-07 00:29:40,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:40,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:40,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:40,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:40,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:40,458 INFO L87 Difference]: Start difference. First operand 11092 states and 17724 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:40,716 INFO L93 Difference]: Finished difference Result 22100 states and 35333 transitions. [2021-12-07 00:29:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-07 00:29:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:40,733 INFO L225 Difference]: With dead ends: 22100 [2021-12-07 00:29:40,733 INFO L226 Difference]: Without dead ends: 11094 [2021-12-07 00:29:40,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:29:40,743 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 386 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:40,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 562 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:40,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11094 states. [2021-12-07 00:29:41,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11094 to 11092. [2021-12-07 00:29:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11092 states, 11091 states have (on average 1.5867820755567577) internal successors, (17599), 11091 states have internal predecessors, (17599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:41,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11092 states to 11092 states and 17599 transitions. [2021-12-07 00:29:41,040 INFO L78 Accepts]: Start accepts. Automaton has 11092 states and 17599 transitions. Word has length 77 [2021-12-07 00:29:41,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:41,041 INFO L470 AbstractCegarLoop]: Abstraction has 11092 states and 17599 transitions. [2021-12-07 00:29:41,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:41,041 INFO L276 IsEmpty]: Start isEmpty. Operand 11092 states and 17599 transitions. [2021-12-07 00:29:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-07 00:29:41,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:41,042 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] [2021-12-07 00:29:41,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:29:41,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1222308264, now seen corresponding path program 1 times [2021-12-07 00:29:41,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:41,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405879943] [2021-12-07 00:29:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:41,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:41,132 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 00:29:41,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:41,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405879943] [2021-12-07 00:29:41,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405879943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:41,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:41,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:41,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109609638] [2021-12-07 00:29:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:41,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:41,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:41,134 INFO L87 Difference]: Start difference. First operand 11092 states and 17599 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:41,523 INFO L93 Difference]: Finished difference Result 31756 states and 50533 transitions. [2021-12-07 00:29:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-07 00:29:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:41,568 INFO L225 Difference]: With dead ends: 31756 [2021-12-07 00:29:41,568 INFO L226 Difference]: Without dead ends: 20750 [2021-12-07 00:29:41,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:29:41,584 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 178 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:41,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 750 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20750 states. [2021-12-07 00:29:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20750 to 20748. [2021-12-07 00:29:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 20747 states have (on average 1.5742034993011038) internal successors, (32660), 20747 states have internal predecessors, (32660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:42,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 32660 transitions. [2021-12-07 00:29:42,029 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 32660 transitions. Word has length 80 [2021-12-07 00:29:42,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:42,030 INFO L470 AbstractCegarLoop]: Abstraction has 20748 states and 32660 transitions. [2021-12-07 00:29:42,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:42,030 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 32660 transitions. [2021-12-07 00:29:42,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 00:29:42,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:42,030 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] [2021-12-07 00:29:42,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:29:42,031 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:42,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash 334573870, now seen corresponding path program 1 times [2021-12-07 00:29:42,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:42,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646803510] [2021-12-07 00:29:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:42,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:42,092 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 00:29:42,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:42,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646803510] [2021-12-07 00:29:42,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646803510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:42,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:42,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:42,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396076522] [2021-12-07 00:29:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:42,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:42,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:42,094 INFO L87 Difference]: Start difference. First operand 20748 states and 32660 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:42,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:42,895 INFO L93 Difference]: Finished difference Result 40559 states and 63106 transitions. [2021-12-07 00:29:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:29:42,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 00:29:42,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:42,956 INFO L225 Difference]: With dead ends: 40559 [2021-12-07 00:29:42,956 INFO L226 Difference]: Without dead ends: 40557 [2021-12-07 00:29:42,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:42,967 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 341 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:42,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 911 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40557 states. [2021-12-07 00:29:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40557 to 21834. [2021-12-07 00:29:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21834 states, 21833 states have (on average 1.5452296981633307) internal successors, (33737), 21833 states have internal predecessors, (33737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21834 states to 21834 states and 33737 transitions. [2021-12-07 00:29:43,608 INFO L78 Accepts]: Start accepts. Automaton has 21834 states and 33737 transitions. Word has length 81 [2021-12-07 00:29:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:43,608 INFO L470 AbstractCegarLoop]: Abstraction has 21834 states and 33737 transitions. [2021-12-07 00:29:43,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 21834 states and 33737 transitions. [2021-12-07 00:29:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 00:29:43,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:43,610 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:43,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:29:43,611 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1678408875, now seen corresponding path program 1 times [2021-12-07 00:29:43,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:43,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333276733] [2021-12-07 00:29:43,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:43,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:29:43,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:43,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333276733] [2021-12-07 00:29:43,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333276733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:43,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:43,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:43,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566153711] [2021-12-07 00:29:43,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:43,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:43,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:43,659 INFO L87 Difference]: Start difference. First operand 21834 states and 33737 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:44,448 INFO L93 Difference]: Finished difference Result 53362 states and 82659 transitions. [2021-12-07 00:29:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-07 00:29:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:44,499 INFO L225 Difference]: With dead ends: 53362 [2021-12-07 00:29:44,500 INFO L226 Difference]: Without dead ends: 43020 [2021-12-07 00:29:44,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:44,517 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 488 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:44,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 907 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43020 states. [2021-12-07 00:29:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43020 to 33554. [2021-12-07 00:29:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33554 states, 33553 states have (on average 1.5432003099573808) internal successors, (51779), 33553 states have internal predecessors, (51779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33554 states to 33554 states and 51779 transitions. [2021-12-07 00:29:45,363 INFO L78 Accepts]: Start accepts. Automaton has 33554 states and 51779 transitions. Word has length 107 [2021-12-07 00:29:45,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:45,363 INFO L470 AbstractCegarLoop]: Abstraction has 33554 states and 51779 transitions. [2021-12-07 00:29:45,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:45,364 INFO L276 IsEmpty]: Start isEmpty. Operand 33554 states and 51779 transitions. [2021-12-07 00:29:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 00:29:45,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:45,366 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:45,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:29:45,366 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:45,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:45,366 INFO L85 PathProgramCache]: Analyzing trace with hash 333972341, now seen corresponding path program 1 times [2021-12-07 00:29:45,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:45,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641476492] [2021-12-07 00:29:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:45,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:29:45,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641476492] [2021-12-07 00:29:45,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641476492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:45,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:45,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:45,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952612898] [2021-12-07 00:29:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:45,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:45,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:45,415 INFO L87 Difference]: Start difference. First operand 33554 states and 51779 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:46,577 INFO L93 Difference]: Finished difference Result 57498 states and 89067 transitions. [2021-12-07 00:29:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-07 00:29:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:46,641 INFO L225 Difference]: With dead ends: 57498 [2021-12-07 00:29:46,641 INFO L226 Difference]: Without dead ends: 47156 [2021-12-07 00:29:46,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:46,663 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 496 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:46,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 896 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47156 states. [2021-12-07 00:29:47,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47156 to 45454. [2021-12-07 00:29:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45454 states, 45453 states have (on average 1.54333047323609) internal successors, (70149), 45453 states have internal predecessors, (70149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:48,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45454 states to 45454 states and 70149 transitions. [2021-12-07 00:29:48,003 INFO L78 Accepts]: Start accepts. Automaton has 45454 states and 70149 transitions. Word has length 107 [2021-12-07 00:29:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:48,003 INFO L470 AbstractCegarLoop]: Abstraction has 45454 states and 70149 transitions. [2021-12-07 00:29:48,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 45454 states and 70149 transitions. [2021-12-07 00:29:48,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 00:29:48,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:48,006 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:48,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:29:48,006 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:48,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1491363019, now seen corresponding path program 1 times [2021-12-07 00:29:48,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:48,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882337339] [2021-12-07 00:29:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:48,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:29:48,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:48,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882337339] [2021-12-07 00:29:48,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882337339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:48,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:48,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969863050] [2021-12-07 00:29:48,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:48,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:48,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:48,056 INFO L87 Difference]: Start difference. First operand 45454 states and 70149 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:49,079 INFO L93 Difference]: Finished difference Result 64542 states and 100125 transitions. [2021-12-07 00:29:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:49,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-12-07 00:29:49,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:49,220 INFO L225 Difference]: With dead ends: 64542 [2021-12-07 00:29:49,220 INFO L226 Difference]: Without dead ends: 53940 [2021-12-07 00:29:49,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:49,232 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 485 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:49,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 986 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53940 states. [2021-12-07 00:29:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53940 to 52238. [2021-12-07 00:29:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52238 states, 52237 states have (on average 1.5455902904071825) internal successors, (80737), 52237 states have internal predecessors, (80737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52238 states to 52238 states and 80737 transitions. [2021-12-07 00:29:50,522 INFO L78 Accepts]: Start accepts. Automaton has 52238 states and 80737 transitions. Word has length 107 [2021-12-07 00:29:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:50,523 INFO L470 AbstractCegarLoop]: Abstraction has 52238 states and 80737 transitions. [2021-12-07 00:29:50,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 52238 states and 80737 transitions. [2021-12-07 00:29:50,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:29:50,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:50,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:50,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:29:50,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash -910445921, now seen corresponding path program 1 times [2021-12-07 00:29:50,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:50,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622584176] [2021-12-07 00:29:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:50,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:29:50,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622584176] [2021-12-07 00:29:50,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622584176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:50,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:50,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:50,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264801125] [2021-12-07 00:29:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:50,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:50,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:50,585 INFO L87 Difference]: Start difference. First operand 52238 states and 80737 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:51,897 INFO L93 Difference]: Finished difference Result 85241 states and 132386 transitions. [2021-12-07 00:29:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:29:51,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:29:51,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:51,984 INFO L225 Difference]: With dead ends: 85241 [2021-12-07 00:29:51,984 INFO L226 Difference]: Without dead ends: 67855 [2021-12-07 00:29:52,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:52,011 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 208 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:52,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 715 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:52,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67855 states. [2021-12-07 00:29:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67855 to 66155. [2021-12-07 00:29:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66155 states, 66154 states have (on average 1.5456510566254498) internal successors, (102251), 66154 states have internal predecessors, (102251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66155 states to 66155 states and 102251 transitions. [2021-12-07 00:29:54,147 INFO L78 Accepts]: Start accepts. Automaton has 66155 states and 102251 transitions. Word has length 108 [2021-12-07 00:29:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:54,147 INFO L470 AbstractCegarLoop]: Abstraction has 66155 states and 102251 transitions. [2021-12-07 00:29:54,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 66155 states and 102251 transitions. [2021-12-07 00:29:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:29:54,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:54,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:54,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:29:54,151 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:54,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash -487744095, now seen corresponding path program 1 times [2021-12-07 00:29:54,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:54,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658254882] [2021-12-07 00:29:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:54,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:29:54,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:54,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658254882] [2021-12-07 00:29:54,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658254882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:54,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:54,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:54,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699354257] [2021-12-07 00:29:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:54,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:54,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:54,191 INFO L87 Difference]: Start difference. First operand 66155 states and 102251 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:56,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:56,591 INFO L93 Difference]: Finished difference Result 143009 states and 221699 transitions. [2021-12-07 00:29:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:56,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-07 00:29:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:56,751 INFO L225 Difference]: With dead ends: 143009 [2021-12-07 00:29:56,751 INFO L226 Difference]: Without dead ends: 111843 [2021-12-07 00:29:56,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:56,788 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 92 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:56,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 382 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:56,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111843 states. [2021-12-07 00:29:59,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111843 to 111565. [2021-12-07 00:29:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111565 states, 111564 states have (on average 1.5450324477429995) internal successors, (172370), 111564 states have internal predecessors, (172370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:59,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111565 states to 111565 states and 172370 transitions. [2021-12-07 00:29:59,815 INFO L78 Accepts]: Start accepts. Automaton has 111565 states and 172370 transitions. Word has length 108 [2021-12-07 00:29:59,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:59,816 INFO L470 AbstractCegarLoop]: Abstraction has 111565 states and 172370 transitions. [2021-12-07 00:29:59,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:59,816 INFO L276 IsEmpty]: Start isEmpty. Operand 111565 states and 172370 transitions. [2021-12-07 00:29:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:29:59,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:59,818 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:59,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:29:59,818 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash 724678092, now seen corresponding path program 1 times [2021-12-07 00:29:59,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:59,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185759936] [2021-12-07 00:29:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:59,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:29:59,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:59,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185759936] [2021-12-07 00:29:59,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185759936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:59,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:59,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:59,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863521331] [2021-12-07 00:29:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:59,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:59,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:59,861 INFO L87 Difference]: Start difference. First operand 111565 states and 172370 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:02,661 INFO L93 Difference]: Finished difference Result 170756 states and 264719 transitions. [2021-12-07 00:30:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:30:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:30:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:02,872 INFO L225 Difference]: With dead ends: 170756 [2021-12-07 00:30:02,872 INFO L226 Difference]: Without dead ends: 138494 [2021-12-07 00:30:02,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:30:02,920 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 213 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:02,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 708 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138494 states. [2021-12-07 00:30:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138494 to 131722. [2021-12-07 00:30:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131722 states, 131721 states have (on average 1.5440058912398176) internal successors, (203378), 131721 states have internal predecessors, (203378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131722 states to 131722 states and 203378 transitions. [2021-12-07 00:30:07,166 INFO L78 Accepts]: Start accepts. Automaton has 131722 states and 203378 transitions. Word has length 109 [2021-12-07 00:30:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:07,166 INFO L470 AbstractCegarLoop]: Abstraction has 131722 states and 203378 transitions. [2021-12-07 00:30:07,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 131722 states and 203378 transitions. [2021-12-07 00:30:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:30:07,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:07,169 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:07,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 00:30:07,169 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash 953659244, now seen corresponding path program 1 times [2021-12-07 00:30:07,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:07,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835905079] [2021-12-07 00:30:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:07,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:30:07,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835905079] [2021-12-07 00:30:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835905079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:07,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:07,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:30:07,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943843104] [2021-12-07 00:30:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:07,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:30:07,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:30:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:07,219 INFO L87 Difference]: Start difference. First operand 131722 states and 203378 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:10,116 INFO L93 Difference]: Finished difference Result 254687 states and 393677 transitions. [2021-12-07 00:30:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:30:10,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:30:10,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:10,295 INFO L225 Difference]: With dead ends: 254687 [2021-12-07 00:30:10,295 INFO L226 Difference]: Without dead ends: 123051 [2021-12-07 00:30:10,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:10,363 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 86 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:10,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 448 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123051 states. [2021-12-07 00:30:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123051 to 123043. [2021-12-07 00:30:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123043 states, 123042 states have (on average 1.5380683018806587) internal successors, (189247), 123042 states have internal predecessors, (189247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123043 states to 123043 states and 189247 transitions. [2021-12-07 00:30:14,095 INFO L78 Accepts]: Start accepts. Automaton has 123043 states and 189247 transitions. Word has length 109 [2021-12-07 00:30:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:14,095 INFO L470 AbstractCegarLoop]: Abstraction has 123043 states and 189247 transitions. [2021-12-07 00:30:14,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 123043 states and 189247 transitions. [2021-12-07 00:30:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:30:14,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:14,097 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:14,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:30:14,098 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash -441834263, now seen corresponding path program 1 times [2021-12-07 00:30:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:14,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48374160] [2021-12-07 00:30:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:14,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:30:14,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:14,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48374160] [2021-12-07 00:30:14,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48374160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:14,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:14,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:30:14,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868372242] [2021-12-07 00:30:14,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:14,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:30:14,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:30:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:14,131 INFO L87 Difference]: Start difference. First operand 123043 states and 189247 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:19,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:19,541 INFO L93 Difference]: Finished difference Result 363821 states and 558535 transitions. [2021-12-07 00:30:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:30:19,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:30:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:19,929 INFO L225 Difference]: With dead ends: 363821 [2021-12-07 00:30:19,929 INFO L226 Difference]: Without dead ends: 240866 [2021-12-07 00:30:20,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:20,010 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 159 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:20,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 508 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:20,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240866 states. [2021-12-07 00:30:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240866 to 240864. [2021-12-07 00:30:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240864 states, 240863 states have (on average 1.5232601105192578) internal successors, (366897), 240863 states have internal predecessors, (366897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240864 states to 240864 states and 366897 transitions. [2021-12-07 00:30:27,031 INFO L78 Accepts]: Start accepts. Automaton has 240864 states and 366897 transitions. Word has length 109 [2021-12-07 00:30:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:27,031 INFO L470 AbstractCegarLoop]: Abstraction has 240864 states and 366897 transitions. [2021-12-07 00:30:27,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 240864 states and 366897 transitions. [2021-12-07 00:30:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:30:27,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:27,034 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:30:27,034 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:27,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1696280788, now seen corresponding path program 1 times [2021-12-07 00:30:27,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:27,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367135822] [2021-12-07 00:30:27,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:27,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:30:27,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:27,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367135822] [2021-12-07 00:30:27,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367135822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:27,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:27,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:30:27,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775927536] [2021-12-07 00:30:27,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:27,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:30:27,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:27,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:30:27,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:27,078 INFO L87 Difference]: Start difference. First operand 240864 states and 366897 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:30,214 INFO L93 Difference]: Finished difference Result 341854 states and 521179 transitions. [2021-12-07 00:30:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:30:30,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:30:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:30,362 INFO L225 Difference]: With dead ends: 341854 [2021-12-07 00:30:30,362 INFO L226 Difference]: Without dead ends: 101188 [2021-12-07 00:30:30,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:30,459 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 64 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:30,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 423 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101188 states. [2021-12-07 00:30:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101188 to 100904. [2021-12-07 00:30:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100904 states, 100903 states have (on average 1.5176456596929724) internal successors, (153135), 100903 states have internal predecessors, (153135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100904 states to 100904 states and 153135 transitions. [2021-12-07 00:30:33,837 INFO L78 Accepts]: Start accepts. Automaton has 100904 states and 153135 transitions. Word has length 109 [2021-12-07 00:30:33,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:33,837 INFO L470 AbstractCegarLoop]: Abstraction has 100904 states and 153135 transitions. [2021-12-07 00:30:33,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 100904 states and 153135 transitions. [2021-12-07 00:30:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:30:33,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:33,839 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:33,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:30:33,840 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 316100428, now seen corresponding path program 1 times [2021-12-07 00:30:33,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:33,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206186348] [2021-12-07 00:30:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:33,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:30:33,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:33,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206186348] [2021-12-07 00:30:33,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206186348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:33,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:33,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:30:33,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356564776] [2021-12-07 00:30:33,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:33,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:30:33,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:30:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:33,880 INFO L87 Difference]: Start difference. First operand 100904 states and 153135 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:35,115 INFO L93 Difference]: Finished difference Result 144356 states and 219191 transitions. [2021-12-07 00:30:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:30:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-07 00:30:35,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:35,172 INFO L225 Difference]: With dead ends: 144356 [2021-12-07 00:30:35,172 INFO L226 Difference]: Without dead ends: 43650 [2021-12-07 00:30:35,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:35,229 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 51 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:35,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 386 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43650 states. [2021-12-07 00:30:36,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43650 to 43590. [2021-12-07 00:30:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43590 states, 43589 states have (on average 1.5098534033815871) internal successors, (65813), 43589 states have internal predecessors, (65813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43590 states to 43590 states and 65813 transitions. [2021-12-07 00:30:36,614 INFO L78 Accepts]: Start accepts. Automaton has 43590 states and 65813 transitions. Word has length 109 [2021-12-07 00:30:36,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 43590 states and 65813 transitions. [2021-12-07 00:30:36,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 43590 states and 65813 transitions. [2021-12-07 00:30:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 00:30:36,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:36,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:30:36,617 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2094978139, now seen corresponding path program 1 times [2021-12-07 00:30:36,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:36,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403386588] [2021-12-07 00:30:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:36,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:30:36,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:36,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403386588] [2021-12-07 00:30:36,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403386588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:36,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:36,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:30:36,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639563589] [2021-12-07 00:30:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:36,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:30:36,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:30:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:30:36,711 INFO L87 Difference]: Start difference. First operand 43590 states and 65813 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:38,836 INFO L93 Difference]: Finished difference Result 104546 states and 157848 transitions. [2021-12-07 00:30:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:30:38,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-07 00:30:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:38,932 INFO L225 Difference]: With dead ends: 104546 [2021-12-07 00:30:38,932 INFO L226 Difference]: Without dead ends: 78824 [2021-12-07 00:30:38,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:30:38,955 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 367 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:38,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 581 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78824 states. [2021-12-07 00:30:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78824 to 68352. [2021-12-07 00:30:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68352 states, 68351 states have (on average 1.509165922956504) internal successors, (103153), 68351 states have internal predecessors, (103153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68352 states to 68352 states and 103153 transitions. [2021-12-07 00:30:41,214 INFO L78 Accepts]: Start accepts. Automaton has 68352 states and 103153 transitions. Word has length 110 [2021-12-07 00:30:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:41,214 INFO L470 AbstractCegarLoop]: Abstraction has 68352 states and 103153 transitions. [2021-12-07 00:30:41,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 68352 states and 103153 transitions. [2021-12-07 00:30:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 00:30:41,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:41,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:41,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 00:30:41,216 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 622902788, now seen corresponding path program 1 times [2021-12-07 00:30:41,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:41,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243864568] [2021-12-07 00:30:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:41,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:41,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:41,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243864568] [2021-12-07 00:30:41,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243864568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:41,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:41,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:30:41,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78923963] [2021-12-07 00:30:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:41,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:30:41,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:41,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:30:41,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:30:41,298 INFO L87 Difference]: Start difference. First operand 68352 states and 103153 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:45,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:45,327 INFO L93 Difference]: Finished difference Result 187400 states and 281826 transitions. [2021-12-07 00:30:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:30:45,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-07 00:30:45,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:45,516 INFO L225 Difference]: With dead ends: 187400 [2021-12-07 00:30:45,516 INFO L226 Difference]: Without dead ends: 136436 [2021-12-07 00:30:45,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:30:45,553 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 350 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:45,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 595 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136436 states. [2021-12-07 00:30:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136436 to 115074. [2021-12-07 00:30:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115074 states, 115073 states have (on average 1.5058875670226726) internal successors, (173287), 115073 states have internal predecessors, (173287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115074 states to 115074 states and 173287 transitions. [2021-12-07 00:30:49,718 INFO L78 Accepts]: Start accepts. Automaton has 115074 states and 173287 transitions. Word has length 110 [2021-12-07 00:30:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:49,718 INFO L470 AbstractCegarLoop]: Abstraction has 115074 states and 173287 transitions. [2021-12-07 00:30:49,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 115074 states and 173287 transitions. [2021-12-07 00:30:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 00:30:49,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:49,719 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:49,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 00:30:49,720 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1458687444, now seen corresponding path program 1 times [2021-12-07 00:30:49,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:49,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264120622] [2021-12-07 00:30:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:49,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:30:49,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:49,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264120622] [2021-12-07 00:30:49,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264120622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:49,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:49,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:30:49,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307467761] [2021-12-07 00:30:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:49,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:30:49,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:49,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:30:49,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:49,752 INFO L87 Difference]: Start difference. First operand 115074 states and 173287 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:30:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:56,639 INFO L93 Difference]: Finished difference Result 340332 states and 511379 transitions. [2021-12-07 00:30:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:30:56,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-07 00:30:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:56,977 INFO L225 Difference]: With dead ends: 340332 [2021-12-07 00:30:56,977 INFO L226 Difference]: Without dead ends: 225397 [2021-12-07 00:30:57,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:30:57,034 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 140 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:57,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 476 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:30:57,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225397 states. [2021-12-07 00:31:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225397 to 225395. [2021-12-07 00:31:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225395 states, 225394 states have (on average 1.4904167812807794) internal successors, (335931), 225394 states have internal predecessors, (335931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225395 states to 225395 states and 335931 transitions. [2021-12-07 00:31:05,448 INFO L78 Accepts]: Start accepts. Automaton has 225395 states and 335931 transitions. Word has length 111 [2021-12-07 00:31:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:05,449 INFO L470 AbstractCegarLoop]: Abstraction has 225395 states and 335931 transitions. [2021-12-07 00:31:05,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 225395 states and 335931 transitions. [2021-12-07 00:31:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:31:05,450 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:05,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:05,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 00:31:05,451 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:05,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:05,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1716328409, now seen corresponding path program 1 times [2021-12-07 00:31:05,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890139471] [2021-12-07 00:31:05,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:05,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:31:05,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890139471] [2021-12-07 00:31:05,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890139471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:05,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:05,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:31:05,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140762646] [2021-12-07 00:31:05,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:05,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:31:05,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:05,481 INFO L87 Difference]: Start difference. First operand 225395 states and 335931 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:16,550 INFO L93 Difference]: Finished difference Result 557623 states and 829555 transitions. [2021-12-07 00:31:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-07 00:31:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:17,044 INFO L225 Difference]: With dead ends: 557623 [2021-12-07 00:31:17,044 INFO L226 Difference]: Without dead ends: 332533 [2021-12-07 00:31:17,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:17,237 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:17,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 421 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:31:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332533 states. [2021-12-07 00:31:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332533 to 227731. [2021-12-07 00:31:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227731 states, 227730 states have (on average 1.4904887366618365) internal successors, (339429), 227730 states have internal predecessors, (339429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227731 states to 227731 states and 339429 transitions. [2021-12-07 00:31:26,860 INFO L78 Accepts]: Start accepts. Automaton has 227731 states and 339429 transitions. Word has length 112 [2021-12-07 00:31:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:26,860 INFO L470 AbstractCegarLoop]: Abstraction has 227731 states and 339429 transitions. [2021-12-07 00:31:26,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 227731 states and 339429 transitions. [2021-12-07 00:31:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:31:26,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:26,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:26,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-07 00:31:26,862 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1888805994, now seen corresponding path program 1 times [2021-12-07 00:31:26,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899173370] [2021-12-07 00:31:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:26,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 00:31:26,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:26,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899173370] [2021-12-07 00:31:26,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899173370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:26,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:26,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:31:26,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945615548] [2021-12-07 00:31:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:26,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:31:26,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:26,889 INFO L87 Difference]: Start difference. First operand 227731 states and 339429 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:38,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:38,425 INFO L93 Difference]: Finished difference Result 570169 states and 848107 transitions. [2021-12-07 00:31:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-07 00:31:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:38,948 INFO L225 Difference]: With dead ends: 570169 [2021-12-07 00:31:38,948 INFO L226 Difference]: Without dead ends: 342701 [2021-12-07 00:31:39,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:31:39,069 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 98 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:39,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 420 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:31:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342701 states. [2021-12-07 00:31:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342701 to 230067. [2021-12-07 00:31:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230067 states, 230066 states have (on average 1.4905592308294142) internal successors, (342927), 230066 states have internal predecessors, (342927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230067 states to 230067 states and 342927 transitions. [2021-12-07 00:31:49,096 INFO L78 Accepts]: Start accepts. Automaton has 230067 states and 342927 transitions. Word has length 112 [2021-12-07 00:31:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:49,097 INFO L470 AbstractCegarLoop]: Abstraction has 230067 states and 342927 transitions. [2021-12-07 00:31:49,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:31:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 230067 states and 342927 transitions. [2021-12-07 00:31:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-07 00:31:49,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:49,098 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:49,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 00:31:49,099 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:49,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:49,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1379043703, now seen corresponding path program 1 times [2021-12-07 00:31:49,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:49,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441408351] [2021-12-07 00:31:49,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:49,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:31:49,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441408351] [2021-12-07 00:31:49,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441408351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:49,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:49,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:31:49,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583628298] [2021-12-07 00:31:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:49,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:31:49,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:31:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:31:49,165 INFO L87 Difference]: Start difference. First operand 230067 states and 342927 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:32:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:05,616 INFO L93 Difference]: Finished difference Result 680816 states and 1012356 transitions. [2021-12-07 00:32:05,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:32:05,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-07 00:32:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:06,376 INFO L225 Difference]: With dead ends: 680816 [2021-12-07 00:32:06,376 INFO L226 Difference]: Without dead ends: 450758 [2021-12-07 00:32:06,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:32:06,512 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 502 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:06,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 439 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:32:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450758 states. [2021-12-07 00:32:24,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450758 to 450756. [2021-12-07 00:32:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450756 states, 450755 states have (on average 1.4747434859291633) internal successors, (664748), 450755 states have internal predecessors, (664748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:32:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450756 states to 450756 states and 664748 transitions. [2021-12-07 00:32:25,983 INFO L78 Accepts]: Start accepts. Automaton has 450756 states and 664748 transitions. Word has length 114 [2021-12-07 00:32:25,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:25,983 INFO L470 AbstractCegarLoop]: Abstraction has 450756 states and 664748 transitions. [2021-12-07 00:32:25,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:32:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 450756 states and 664748 transitions. [2021-12-07 00:32:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-07 00:32:25,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:25,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:32:25,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-07 00:32:25,986 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:32:25,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1105597269, now seen corresponding path program 1 times [2021-12-07 00:32:25,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:25,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573957744] [2021-12-07 00:32:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:25,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:32:26,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:32:26,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573957744] [2021-12-07 00:32:26,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573957744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:32:26,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:32:26,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:32:26,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955292785] [2021-12-07 00:32:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:32:26,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:32:26,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:32:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:32:26,008 INFO L87 Difference]: Start difference. First operand 450756 states and 664748 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:32:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:58,623 INFO L93 Difference]: Finished difference Result 1352210 states and 1994150 transitions. [2021-12-07 00:32:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:32:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-07 00:32:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:00,389 INFO L225 Difference]: With dead ends: 1352210 [2021-12-07 00:33:00,389 INFO L226 Difference]: Without dead ends: 901502 [2021-12-07 00:33:00,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:00,827 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 200 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:00,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 598 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901502 states. [2021-12-07 00:33:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901502 to 450758. [2021-12-07 00:33:22,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450758 states, 450757 states have (on average 1.474741379501594) internal successors, (664750), 450757 states have internal predecessors, (664750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450758 states to 450758 states and 664750 transitions. [2021-12-07 00:33:23,973 INFO L78 Accepts]: Start accepts. Automaton has 450758 states and 664750 transitions. Word has length 115 [2021-12-07 00:33:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:23,973 INFO L470 AbstractCegarLoop]: Abstraction has 450758 states and 664750 transitions. [2021-12-07 00:33:23,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 450758 states and 664750 transitions. [2021-12-07 00:33:23,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:33:23,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:23,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:33:23,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-07 00:33:23,976 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash 597696933, now seen corresponding path program 1 times [2021-12-07 00:33:23,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:23,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688594258] [2021-12-07 00:33:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:23,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 00:33:24,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:24,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688594258] [2021-12-07 00:33:24,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688594258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:24,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:24,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:33:24,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818423023] [2021-12-07 00:33:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:24,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:24,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:24,002 INFO L87 Difference]: Start difference. First operand 450758 states and 664750 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:33:51,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:51,030 INFO L93 Difference]: Finished difference Result 1139364 states and 1678466 transitions. [2021-12-07 00:33:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:33:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-07 00:33:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:52,320 INFO L225 Difference]: With dead ends: 1139364 [2021-12-07 00:33:52,321 INFO L226 Difference]: Without dead ends: 689032 [2021-12-07 00:33:52,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:33:52,560 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 90 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:52,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 422 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:33:53,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689032 states. [2021-12-07 00:34:13,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689032 to 455430. [2021-12-07 00:34:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455430 states, 455429 states have (on average 1.4749741452564504) internal successors, (671746), 455429 states have internal predecessors, (671746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455430 states to 455430 states and 671746 transitions. [2021-12-07 00:34:15,338 INFO L78 Accepts]: Start accepts. Automaton has 455430 states and 671746 transitions. Word has length 116 [2021-12-07 00:34:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:15,339 INFO L470 AbstractCegarLoop]: Abstraction has 455430 states and 671746 transitions. [2021-12-07 00:34:15,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 455430 states and 671746 transitions. [2021-12-07 00:34:15,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:34:15,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:15,342 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:15,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-07 00:34:15,342 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:15,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:15,342 INFO L85 PathProgramCache]: Analyzing trace with hash -720678901, now seen corresponding path program 1 times [2021-12-07 00:34:15,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:15,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87983156] [2021-12-07 00:34:15,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:15,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:34:15,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:15,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87983156] [2021-12-07 00:34:15,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87983156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:15,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:15,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:34:15,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615347575] [2021-12-07 00:34:15,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:15,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:34:15,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:15,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:34:15,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:34:15,386 INFO L87 Difference]: Start difference. First operand 455430 states and 671746 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:35,340 INFO L93 Difference]: Finished difference Result 910921 states and 1343544 transitions. [2021-12-07 00:34:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:34:35,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-07 00:34:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:36,098 INFO L225 Difference]: With dead ends: 910921 [2021-12-07 00:34:36,099 INFO L226 Difference]: Without dead ends: 455668 [2021-12-07 00:34:36,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:34:36,312 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 432 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:36,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 472 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:36,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455668 states. [2021-12-07 00:34:58,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455668 to 455666. [2021-12-07 00:34:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455666 states, 455665 states have (on average 1.4645364467317) internal successors, (667338), 455665 states have internal predecessors, (667338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455666 states to 455666 states and 667338 transitions. [2021-12-07 00:34:59,857 INFO L78 Accepts]: Start accepts. Automaton has 455666 states and 667338 transitions. Word has length 116 [2021-12-07 00:34:59,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:59,857 INFO L470 AbstractCegarLoop]: Abstraction has 455666 states and 667338 transitions. [2021-12-07 00:34:59,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:34:59,857 INFO L276 IsEmpty]: Start isEmpty. Operand 455666 states and 667338 transitions. [2021-12-07 00:34:59,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:34:59,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:59,860 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:59,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-07 00:34:59,860 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1684426371, now seen corresponding path program 1 times [2021-12-07 00:34:59,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080298550] [2021-12-07 00:34:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:59,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:34:59,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:59,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080298550] [2021-12-07 00:34:59,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080298550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:59,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:59,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:34:59,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721473830] [2021-12-07 00:34:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:59,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:34:59,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:34:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:34:59,893 INFO L87 Difference]: Start difference. First operand 455666 states and 667338 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:21,970 INFO L93 Difference]: Finished difference Result 732216 states and 1075549 transitions. [2021-12-07 00:35:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:35:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-07 00:35:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:22,966 INFO L225 Difference]: With dead ends: 732216 [2021-12-07 00:35:22,966 INFO L226 Difference]: Without dead ends: 531158 [2021-12-07 00:35:23,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:35:23,099 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 204 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:23,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 662 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531158 states. [2021-12-07 00:35:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531158 to 525004. [2021-12-07 00:35:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525004 states, 525003 states have (on average 1.4633935425130904) internal successors, (768286), 525003 states have internal predecessors, (768286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:48,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525004 states to 525004 states and 768286 transitions. [2021-12-07 00:35:48,894 INFO L78 Accepts]: Start accepts. Automaton has 525004 states and 768286 transitions. Word has length 116 [2021-12-07 00:35:48,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:48,894 INFO L470 AbstractCegarLoop]: Abstraction has 525004 states and 768286 transitions. [2021-12-07 00:35:48,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:35:48,895 INFO L276 IsEmpty]: Start isEmpty. Operand 525004 states and 768286 transitions. [2021-12-07 00:35:48,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:35:48,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:48,898 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:48,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-07 00:35:48,898 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash -399266369, now seen corresponding path program 1 times [2021-12-07 00:35:48,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723958362] [2021-12-07 00:35:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:48,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:35:48,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:48,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723958362] [2021-12-07 00:35:48,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723958362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:48,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:48,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:35:48,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139008799] [2021-12-07 00:35:48,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:48,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:35:48,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:35:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:35:48,919 INFO L87 Difference]: Start difference. First operand 525004 states and 768286 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:36:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:34,174 INFO L93 Difference]: Finished difference Result 1574533 states and 2304264 transitions. [2021-12-07 00:36:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:36:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-07 00:36:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:36,154 INFO L225 Difference]: With dead ends: 1574533 [2021-12-07 00:36:36,154 INFO L226 Difference]: Without dead ends: 1049960 [2021-12-07 00:36:36,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:36:36,658 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 186 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:36,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 494 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:36:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049960 states. [2021-12-07 00:37:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049960 to 525008. [2021-12-07 00:37:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525008 states, 525007 states have (on average 1.463390011942698) internal successors, (768290), 525007 states have internal predecessors, (768290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525008 states to 525008 states and 768290 transitions. [2021-12-07 00:37:07,176 INFO L78 Accepts]: Start accepts. Automaton has 525008 states and 768290 transitions. Word has length 117 [2021-12-07 00:37:07,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:07,177 INFO L470 AbstractCegarLoop]: Abstraction has 525008 states and 768290 transitions. [2021-12-07 00:37:07,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:07,177 INFO L276 IsEmpty]: Start isEmpty. Operand 525008 states and 768290 transitions. [2021-12-07 00:37:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:37:07,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:07,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:37:07,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-07 00:37:07,180 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:07,180 INFO L85 PathProgramCache]: Analyzing trace with hash -776040289, now seen corresponding path program 1 times [2021-12-07 00:37:07,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:07,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180125539] [2021-12-07 00:37:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:07,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:37:07,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180125539] [2021-12-07 00:37:07,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180125539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:07,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:37:07,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:37:07,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488947378] [2021-12-07 00:37:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:07,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:37:07,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:37:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:37:07,222 INFO L87 Difference]: Start difference. First operand 525008 states and 768290 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:29,195 INFO L93 Difference]: Finished difference Result 961765 states and 1409018 transitions. [2021-12-07 00:37:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:37:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-07 00:37:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:29,926 INFO L225 Difference]: With dead ends: 961765 [2021-12-07 00:37:29,926 INFO L226 Difference]: Without dead ends: 436595 [2021-12-07 00:37:30,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:37:30,145 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 400 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:30,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 486 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:37:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436595 states. [2021-12-07 00:37:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436595 to 436593. [2021-12-07 00:37:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436593 states, 436592 states have (on average 1.4547174478689486) internal successors, (635118), 436592 states have internal predecessors, (635118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436593 states to 436593 states and 635118 transitions. [2021-12-07 00:37:53,981 INFO L78 Accepts]: Start accepts. Automaton has 436593 states and 635118 transitions. Word has length 118 [2021-12-07 00:37:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:53,982 INFO L470 AbstractCegarLoop]: Abstraction has 436593 states and 635118 transitions. [2021-12-07 00:37:53,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:37:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 436593 states and 635118 transitions. [2021-12-07 00:37:53,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-07 00:37:53,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:53,986 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:37:53,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-07 00:37:53,986 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1610938157, now seen corresponding path program 1 times [2021-12-07 00:37:53,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150216320] [2021-12-07 00:37:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:53,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:37:54,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150216320] [2021-12-07 00:37:54,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150216320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:54,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:37:54,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:37:54,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266115820] [2021-12-07 00:37:54,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:54,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:37:54,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:54,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:37:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:37:54,010 INFO L87 Difference]: Start difference. First operand 436593 states and 635118 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:38:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:36,768 INFO L93 Difference]: Finished difference Result 1308661 states and 1904032 transitions. [2021-12-07 00:38:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:38:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-07 00:38:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:38,411 INFO L225 Difference]: With dead ends: 1308661 [2021-12-07 00:38:38,412 INFO L226 Difference]: Without dead ends: 872751 [2021-12-07 00:38:38,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:38:38,662 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 172 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:38,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 582 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:38:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872751 states. [2021-12-07 00:39:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872751 to 436601. [2021-12-07 00:39:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436601 states, 436600 states have (on average 1.4546999541914796) internal successors, (635122), 436600 states have internal predecessors, (635122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436601 states to 436601 states and 635122 transitions. [2021-12-07 00:39:05,564 INFO L78 Accepts]: Start accepts. Automaton has 436601 states and 635122 transitions. Word has length 119 [2021-12-07 00:39:05,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:05,565 INFO L470 AbstractCegarLoop]: Abstraction has 436601 states and 635122 transitions. [2021-12-07 00:39:05,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 436601 states and 635122 transitions. [2021-12-07 00:39:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-07 00:39:05,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:05,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:05,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-07 00:39:05,568 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:05,569 INFO L85 PathProgramCache]: Analyzing trace with hash -104149384, now seen corresponding path program 1 times [2021-12-07 00:39:05,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:05,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524350361] [2021-12-07 00:39:05,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:05,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:05,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:39:05,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:05,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524350361] [2021-12-07 00:39:05,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524350361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:05,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:05,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:39:05,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214306930] [2021-12-07 00:39:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:05,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:39:05,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:05,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:39:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:05,619 INFO L87 Difference]: Start difference. First operand 436601 states and 635122 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:39:49,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:49,769 INFO L93 Difference]: Finished difference Result 1288619 states and 1870801 transitions. [2021-12-07 00:39:49,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:39:49,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-12-07 00:39:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:51,476 INFO L225 Difference]: With dead ends: 1288619 [2021-12-07 00:39:51,477 INFO L226 Difference]: Without dead ends: 852134 [2021-12-07 00:39:51,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:39:51,776 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 376 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:51,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 687 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:39:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852134 states.