./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R --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 5822f6dcecb89719be961a38493299a8716c4a47f733fff54adb51e7e48a109b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:47:36,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:47:36,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:47:36,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:47:36,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:47:36,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:47:36,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:47:36,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:47:36,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:47:36,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:47:36,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:47:36,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:47:36,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:47:36,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:47:36,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:47:36,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:47:36,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:47:36,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:47:36,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:47:36,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:47:36,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:47:36,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:47:36,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:47:36,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:47:36,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:47:36,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:47:36,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:47:36,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:47:36,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:47:36,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:47:36,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:47:36,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:47:36,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:47:36,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:47:36,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:47:36,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:47:36,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:47:36,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:47:36,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:47:36,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:47:36,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:47:36,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:47:36,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:47:36,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:47:36,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:47:36,181 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:47:36,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:47:36,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:47:36,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:47:36,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:47:36,184 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:47:36,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:47:36,185 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:47:36,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:47:36,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:47:36,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:47:36,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:47:36,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:47:36,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:47:36,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:47:36,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:47:36,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:47:36,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:47:36,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:47:36,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:47:36,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:47:36,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:47:36,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:47:36,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:47:36,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:47:36,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:47:36,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:47:36,191 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:47:36,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:47:36,191 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:47:36,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:47:36,192 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5822f6dcecb89719be961a38493299a8716c4a47f733fff54adb51e7e48a109b [2022-11-25 16:47:36,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:47:36,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:47:36,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:47:36,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:47:36,509 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:47:36,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem13_label40.c [2022-11-25 16:47:39,885 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:47:40,449 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:47:40,450 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/sv-benchmarks/c/eca-rers2012/Problem13_label40.c [2022-11-25 16:47:40,490 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/data/b3a63e05b/a6036549d0de4099a84a8611033a7a7f/FLAG0395b2652 [2022-11-25 16:47:40,512 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/data/b3a63e05b/a6036549d0de4099a84a8611033a7a7f [2022-11-25 16:47:40,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:47:40,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:47:40,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:47:40,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:47:40,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:47:40,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:47:40" (1/1) ... [2022-11-25 16:47:40,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502f94d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:40, skipping insertion in model container [2022-11-25 16:47:40,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:47:40" (1/1) ... [2022-11-25 16:47:40,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:47:40,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:47:41,058 WARN L237 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_6983dbda-7fed-43c4-8bd3-d83711528f9f/sv-benchmarks/c/eca-rers2012/Problem13_label40.c[4201,4214] [2022-11-25 16:47:42,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:47:42,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:47:42,435 WARN L237 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_6983dbda-7fed-43c4-8bd3-d83711528f9f/sv-benchmarks/c/eca-rers2012/Problem13_label40.c[4201,4214] [2022-11-25 16:47:43,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:47:43,228 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:47:43,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43 WrapperNode [2022-11-25 16:47:43,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:47:43,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:47:43,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:47:43,232 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:47:43,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:43,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,064 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-25 16:47:44,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:47:44,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:47:44,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:47:44,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:47:44,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:44,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:45,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:45,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:47:45,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:47:45,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:47:45,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:47:45,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (1/1) ... [2022-11-25 16:47:45,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:47:45,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:47:45,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:47:45,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:47:45,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:47:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:47:45,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:47:45,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:47:45,243 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:47:45,246 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:47:52,652 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:47:52,669 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:47:52,670 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 16:47:52,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:47:52 BoogieIcfgContainer [2022-11-25 16:47:52,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:47:52,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:47:52,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:47:52,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:47:52,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:47:40" (1/3) ... [2022-11-25 16:47:52,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f6c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:47:52, skipping insertion in model container [2022-11-25 16:47:52,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:47:43" (2/3) ... [2022-11-25 16:47:52,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f6c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:47:52, skipping insertion in model container [2022-11-25 16:47:52,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:47:52" (3/3) ... [2022-11-25 16:47:52,689 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40.c [2022-11-25 16:47:52,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:47:52,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:47:52,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:47:52,801 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@62f0be17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:47:52,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:47:52,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-11-25 16:47:52,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-25 16:47:52,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:52,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:47:52,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:52,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2022-11-25 16:47:52,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:52,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30127516] [2022-11-25 16:47:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:47:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:47:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:47:53,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30127516] [2022-11-25 16:47:53,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30127516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:47:53,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:47:53,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:47:53,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823384920] [2022-11-25 16:47:53,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:47:53,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:47:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:47:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:47:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:47:53,327 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-25 16:47:59,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:47:59,642 INFO L93 Difference]: Finished difference Result 3147 states and 5806 transitions. [2022-11-25 16:47:59,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:47:59,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-11-25 16:47:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:47:59,687 INFO L225 Difference]: With dead ends: 3147 [2022-11-25 16:47:59,687 INFO L226 Difference]: Without dead ends: 1964 [2022-11-25 16:47:59,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:47:59,701 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 1151 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:47:59,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 992 Invalid, 3298 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [584 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-25 16:47:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-25 16:47:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1951. [2022-11-25 16:47:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1950 states have (on average 1.6538461538461537) internal successors, (3225), 1950 states have internal predecessors, (3225), 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) [2022-11-25 16:47:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3225 transitions. [2022-11-25 16:47:59,892 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3225 transitions. Word has length 28 [2022-11-25 16:47:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:47:59,894 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 3225 transitions. [2022-11-25 16:47:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-25 16:47:59,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3225 transitions. [2022-11-25 16:47:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-25 16:47:59,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:47:59,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:47:59,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:47:59,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:47:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:47:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash 215513083, now seen corresponding path program 1 times [2022-11-25 16:47:59,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:47:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498393870] [2022-11-25 16:47:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:47:59,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:47:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:00,196 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:00,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498393870] [2022-11-25 16:48:00,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498393870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:00,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:00,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:48:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817792473] [2022-11-25 16:48:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:00,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:00,201 INFO L87 Difference]: Start difference. First operand 1951 states and 3225 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2022-11-25 16:48:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:06,754 INFO L93 Difference]: Finished difference Result 5542 states and 9222 transitions. [2022-11-25 16:48:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:06,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2022-11-25 16:48:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:06,773 INFO L225 Difference]: With dead ends: 5542 [2022-11-25 16:48:06,773 INFO L226 Difference]: Without dead ends: 3593 [2022-11-25 16:48:06,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:06,779 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:06,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1009 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 16:48:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2022-11-25 16:48:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 3581. [2022-11-25 16:48:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 3580 states have (on average 1.5050279329608938) internal successors, (5388), 3580 states have internal predecessors, (5388), 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) [2022-11-25 16:48:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5388 transitions. [2022-11-25 16:48:06,872 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5388 transitions. Word has length 99 [2022-11-25 16:48:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:06,872 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 5388 transitions. [2022-11-25 16:48:06,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2022-11-25 16:48:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5388 transitions. [2022-11-25 16:48:06,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 16:48:06,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:06,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:48:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:48:06,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1129801848, now seen corresponding path program 1 times [2022-11-25 16:48:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:06,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306651453] [2022-11-25 16:48:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:06,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:07,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:07,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306651453] [2022-11-25 16:48:07,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306651453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:07,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:07,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:48:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706329143] [2022-11-25 16:48:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:07,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:07,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:07,129 INFO L87 Difference]: Start difference. First operand 3581 states and 5388 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-11-25 16:48:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:12,443 INFO L93 Difference]: Finished difference Result 10352 states and 15625 transitions. [2022-11-25 16:48:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 113 [2022-11-25 16:48:12,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:12,472 INFO L225 Difference]: With dead ends: 10352 [2022-11-25 16:48:12,473 INFO L226 Difference]: Without dead ends: 6773 [2022-11-25 16:48:12,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:12,480 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 786 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:12,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1171 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 16:48:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2022-11-25 16:48:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6749. [2022-11-25 16:48:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6749 states, 6748 states have (on average 1.3255779490219324) internal successors, (8945), 6748 states have internal predecessors, (8945), 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) [2022-11-25 16:48:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 8945 transitions. [2022-11-25 16:48:12,625 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 8945 transitions. Word has length 113 [2022-11-25 16:48:12,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:12,626 INFO L495 AbstractCegarLoop]: Abstraction has 6749 states and 8945 transitions. [2022-11-25 16:48:12,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2022-11-25 16:48:12,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 8945 transitions. [2022-11-25 16:48:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-25 16:48:12,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:12,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 16:48:12,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1928986802, now seen corresponding path program 1 times [2022-11-25 16:48:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:12,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100095834] [2022-11-25 16:48:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:12,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:12,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100095834] [2022-11-25 16:48:12,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100095834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:12,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:12,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:48:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204035164] [2022-11-25 16:48:12,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:12,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:12,917 INFO L87 Difference]: Start difference. First operand 6749 states and 8945 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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) [2022-11-25 16:48:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:18,004 INFO L93 Difference]: Finished difference Result 19804 states and 26226 transitions. [2022-11-25 16:48:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:18,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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 142 [2022-11-25 16:48:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:18,050 INFO L225 Difference]: With dead ends: 19804 [2022-11-25 16:48:18,051 INFO L226 Difference]: Without dead ends: 13057 [2022-11-25 16:48:18,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:18,061 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:18,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1035 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 16:48:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13057 states. [2022-11-25 16:48:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13057 to 13052. [2022-11-25 16:48:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13052 states, 13051 states have (on average 1.2182208259903455) internal successors, (15899), 13051 states have internal predecessors, (15899), 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) [2022-11-25 16:48:18,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13052 states to 13052 states and 15899 transitions. [2022-11-25 16:48:18,328 INFO L78 Accepts]: Start accepts. Automaton has 13052 states and 15899 transitions. Word has length 142 [2022-11-25 16:48:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:18,329 INFO L495 AbstractCegarLoop]: Abstraction has 13052 states and 15899 transitions. [2022-11-25 16:48:18,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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) [2022-11-25 16:48:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13052 states and 15899 transitions. [2022-11-25 16:48:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-25 16:48:18,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:18,333 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:48:18,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:48:18,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:18,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1888751763, now seen corresponding path program 1 times [2022-11-25 16:48:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:18,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935622185] [2022-11-25 16:48:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:18,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:18,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935622185] [2022-11-25 16:48:18,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935622185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:18,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:18,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:48:18,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733838212] [2022-11-25 16:48:18,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:18,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:48:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:48:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:48:18,661 INFO L87 Difference]: Start difference. First operand 13052 states and 15899 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-25 16:48:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:30,301 INFO L93 Difference]: Finished difference Result 47613 states and 58541 transitions. [2022-11-25 16:48:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:48:30,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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 153 [2022-11-25 16:48:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:30,401 INFO L225 Difference]: With dead ends: 47613 [2022-11-25 16:48:30,401 INFO L226 Difference]: Without dead ends: 34563 [2022-11-25 16:48:30,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:48:30,421 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 1651 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 7510 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 8112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 7510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:30,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1300 Invalid, 8112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 7510 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-11-25 16:48:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34563 states. [2022-11-25 16:48:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34563 to 34360. [2022-11-25 16:48:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34360 states, 34359 states have (on average 1.1786431502663057) internal successors, (40497), 34359 states have internal predecessors, (40497), 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) [2022-11-25 16:48:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34360 states to 34360 states and 40497 transitions. [2022-11-25 16:48:31,159 INFO L78 Accepts]: Start accepts. Automaton has 34360 states and 40497 transitions. Word has length 153 [2022-11-25 16:48:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:31,159 INFO L495 AbstractCegarLoop]: Abstraction has 34360 states and 40497 transitions. [2022-11-25 16:48:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-11-25 16:48:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 34360 states and 40497 transitions. [2022-11-25 16:48:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-25 16:48:31,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:31,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:48:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 16:48:31,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash 245627492, now seen corresponding path program 1 times [2022-11-25 16:48:31,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:31,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685556684] [2022-11-25 16:48:31,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:31,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 16:48:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:31,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685556684] [2022-11-25 16:48:31,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685556684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:31,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:31,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:48:31,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295015292] [2022-11-25 16:48:31,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:31,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:31,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:31,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:31,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:31,829 INFO L87 Difference]: Start difference. First operand 34360 states and 40497 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2022-11-25 16:48:37,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:37,043 INFO L93 Difference]: Finished difference Result 69505 states and 81794 transitions. [2022-11-25 16:48:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:37,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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 218 [2022-11-25 16:48:37,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:37,120 INFO L225 Difference]: With dead ends: 69505 [2022-11-25 16:48:37,120 INFO L226 Difference]: Without dead ends: 35147 [2022-11-25 16:48:37,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:37,152 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:37,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-25 16:48:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35147 states. [2022-11-25 16:48:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35147 to 35147. [2022-11-25 16:48:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35147 states, 35146 states have (on average 1.1747851818130086) internal successors, (41289), 35146 states have internal predecessors, (41289), 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) [2022-11-25 16:48:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35147 states to 35147 states and 41289 transitions. [2022-11-25 16:48:37,671 INFO L78 Accepts]: Start accepts. Automaton has 35147 states and 41289 transitions. Word has length 218 [2022-11-25 16:48:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:37,672 INFO L495 AbstractCegarLoop]: Abstraction has 35147 states and 41289 transitions. [2022-11-25 16:48:37,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 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) [2022-11-25 16:48:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 35147 states and 41289 transitions. [2022-11-25 16:48:37,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-25 16:48:37,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:37,677 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:48:37,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 16:48:37,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:37,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash 518295855, now seen corresponding path program 1 times [2022-11-25 16:48:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:37,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130342425] [2022-11-25 16:48:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:38,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130342425] [2022-11-25 16:48:38,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130342425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:38,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:38,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:48:38,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084432547] [2022-11-25 16:48:38,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:38,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:48:38,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:38,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:48:38,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:48:38,141 INFO L87 Difference]: Start difference. First operand 35147 states and 41289 transitions. Second operand has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-11-25 16:48:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:49,545 INFO L93 Difference]: Finished difference Result 94992 states and 112854 transitions. [2022-11-25 16:48:49,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:48:49,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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 225 [2022-11-25 16:48:49,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:49,655 INFO L225 Difference]: With dead ends: 94992 [2022-11-25 16:48:49,655 INFO L226 Difference]: Without dead ends: 60634 [2022-11-25 16:48:49,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:48:49,676 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 1740 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 6170 mSolverCounterSat, 1150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 7320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1150 IncrementalHoareTripleChecker+Valid, 6170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:49,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 840 Invalid, 7320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1150 Valid, 6170 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-25 16:48:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60634 states. [2022-11-25 16:48:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60634 to 60455. [2022-11-25 16:48:50,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60455 states, 60454 states have (on average 1.1679624177060244) internal successors, (70608), 60454 states have internal predecessors, (70608), 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) [2022-11-25 16:48:51,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60455 states to 60455 states and 70608 transitions. [2022-11-25 16:48:51,134 INFO L78 Accepts]: Start accepts. Automaton has 60455 states and 70608 transitions. Word has length 225 [2022-11-25 16:48:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:48:51,135 INFO L495 AbstractCegarLoop]: Abstraction has 60455 states and 70608 transitions. [2022-11-25 16:48:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.25) internal successors, (225), 3 states have internal predecessors, (225), 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) [2022-11-25 16:48:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 60455 states and 70608 transitions. [2022-11-25 16:48:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-25 16:48:51,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:48:51,155 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:48:51,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:48:51,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:48:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:48:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1054166602, now seen corresponding path program 1 times [2022-11-25 16:48:51,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:48:51,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017659522] [2022-11-25 16:48:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:48:51,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:48:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:48:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:48:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:48:51,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017659522] [2022-11-25 16:48:51,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017659522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:48:51,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:48:51,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:48:51,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120773916] [2022-11-25 16:48:51,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:48:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:48:51,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:48:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:48:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:48:51,959 INFO L87 Difference]: Start difference. First operand 60455 states and 70608 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-11-25 16:48:57,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:48:57,795 INFO L93 Difference]: Finished difference Result 146103 states and 173484 transitions. [2022-11-25 16:48:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:48:57,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 235 [2022-11-25 16:48:57,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:48:57,935 INFO L225 Difference]: With dead ends: 146103 [2022-11-25 16:48:57,935 INFO L226 Difference]: Without dead ends: 86437 [2022-11-25 16:48:57,967 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:48:57,969 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 811 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:48:57,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1083 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 16:48:58,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86437 states. [2022-11-25 16:48:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86437 to 84851. [2022-11-25 16:48:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84851 states, 84850 states have (on average 1.1580907483794933) internal successors, (98264), 84850 states have internal predecessors, (98264), 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) [2022-11-25 16:49:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84851 states to 84851 states and 98264 transitions. [2022-11-25 16:49:00,034 INFO L78 Accepts]: Start accepts. Automaton has 84851 states and 98264 transitions. Word has length 235 [2022-11-25 16:49:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:00,035 INFO L495 AbstractCegarLoop]: Abstraction has 84851 states and 98264 transitions. [2022-11-25 16:49:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-11-25 16:49:00,035 INFO L276 IsEmpty]: Start isEmpty. Operand 84851 states and 98264 transitions. [2022-11-25 16:49:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-25 16:49:00,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:00,039 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 16:49:00,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 16:49:00,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:00,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash 945283299, now seen corresponding path program 1 times [2022-11-25 16:49:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:00,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51879377] [2022-11-25 16:49:00,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:00,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:49:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51879377] [2022-11-25 16:49:00,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51879377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:00,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:00,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738902762] [2022-11-25 16:49:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:00,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:00,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:00,418 INFO L87 Difference]: Start difference. First operand 84851 states and 98264 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-11-25 16:49:06,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:06,202 INFO L93 Difference]: Finished difference Result 166365 states and 192910 transitions. [2022-11-25 16:49:06,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:06,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 242 [2022-11-25 16:49:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:06,315 INFO L225 Difference]: With dead ends: 166365 [2022-11-25 16:49:06,316 INFO L226 Difference]: Without dead ends: 82303 [2022-11-25 16:49:06,346 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:49:06,347 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 1036 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:06,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1648 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 16:49:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82303 states. [2022-11-25 16:49:07,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82303 to 75995. [2022-11-25 16:49:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75995 states, 75994 states have (on average 1.1166802642313867) internal successors, (84861), 75994 states have internal predecessors, (84861), 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) [2022-11-25 16:49:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75995 states to 75995 states and 84861 transitions. [2022-11-25 16:49:07,656 INFO L78 Accepts]: Start accepts. Automaton has 75995 states and 84861 transitions. Word has length 242 [2022-11-25 16:49:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:07,658 INFO L495 AbstractCegarLoop]: Abstraction has 75995 states and 84861 transitions. [2022-11-25 16:49:07,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-11-25 16:49:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 75995 states and 84861 transitions. [2022-11-25 16:49:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-25 16:49:07,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:07,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:49:07,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 16:49:07,677 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1755959963, now seen corresponding path program 1 times [2022-11-25 16:49:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:07,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943860238] [2022-11-25 16:49:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-25 16:49:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:08,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943860238] [2022-11-25 16:49:08,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943860238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:08,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:08,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530553903] [2022-11-25 16:49:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:08,343 INFO L87 Difference]: Start difference. First operand 75995 states and 84861 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-25 16:49:14,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:14,120 INFO L93 Difference]: Finished difference Result 153566 states and 171314 transitions. [2022-11-25 16:49:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:14,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 314 [2022-11-25 16:49:14,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:14,211 INFO L225 Difference]: With dead ends: 153566 [2022-11-25 16:49:14,211 INFO L226 Difference]: Without dead ends: 78360 [2022-11-25 16:49:14,243 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:49:14,244 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 939 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:14,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1477 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 16:49:14,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78360 states. [2022-11-25 16:49:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78360 to 75988. [2022-11-25 16:49:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75988 states, 75987 states have (on average 1.0957400607998737) internal successors, (83262), 75987 states have internal predecessors, (83262), 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) [2022-11-25 16:49:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75988 states to 75988 states and 83262 transitions. [2022-11-25 16:49:15,270 INFO L78 Accepts]: Start accepts. Automaton has 75988 states and 83262 transitions. Word has length 314 [2022-11-25 16:49:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:15,271 INFO L495 AbstractCegarLoop]: Abstraction has 75988 states and 83262 transitions. [2022-11-25 16:49:15,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-11-25 16:49:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 75988 states and 83262 transitions. [2022-11-25 16:49:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-25 16:49:15,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:15,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 16:49:15,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 16:49:15,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:15,282 INFO L85 PathProgramCache]: Analyzing trace with hash -444136852, now seen corresponding path program 1 times [2022-11-25 16:49:15,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:15,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494291912] [2022-11-25 16:49:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:15,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-25 16:49:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:16,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494291912] [2022-11-25 16:49:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494291912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:16,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:16,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92714206] [2022-11-25 16:49:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:16,210 INFO L87 Difference]: Start difference. First operand 75988 states and 83262 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 16:49:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:21,841 INFO L93 Difference]: Finished difference Result 173236 states and 190620 transitions. [2022-11-25 16:49:21,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 324 [2022-11-25 16:49:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:21,949 INFO L225 Difference]: With dead ends: 173236 [2022-11-25 16:49:21,950 INFO L226 Difference]: Without dead ends: 98037 [2022-11-25 16:49:21,983 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:49:21,984 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 894 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:21,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 846 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 16:49:22,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98037 states. [2022-11-25 16:49:23,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98037 to 96447. [2022-11-25 16:49:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96447 states, 96446 states have (on average 1.0905791842067063) internal successors, (105182), 96446 states have internal predecessors, (105182), 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) [2022-11-25 16:49:23,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96447 states to 96447 states and 105182 transitions. [2022-11-25 16:49:23,428 INFO L78 Accepts]: Start accepts. Automaton has 96447 states and 105182 transitions. Word has length 324 [2022-11-25 16:49:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:23,429 INFO L495 AbstractCegarLoop]: Abstraction has 96447 states and 105182 transitions. [2022-11-25 16:49:23,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 16:49:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 96447 states and 105182 transitions. [2022-11-25 16:49:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-11-25 16:49:23,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:23,441 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 16:49:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 16:49:23,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:23,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1192441845, now seen corresponding path program 1 times [2022-11-25 16:49:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:23,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052021783] [2022-11-25 16:49:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-25 16:49:24,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:24,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052021783] [2022-11-25 16:49:24,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052021783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:24,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:24,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:49:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996367748] [2022-11-25 16:49:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:24,088 INFO L87 Difference]: Start difference. First operand 96447 states and 105182 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2022-11-25 16:49:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:30,488 INFO L93 Difference]: Finished difference Result 209437 states and 227970 transitions. [2022-11-25 16:49:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:30,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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 341 [2022-11-25 16:49:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:30,626 INFO L225 Difference]: With dead ends: 209437 [2022-11-25 16:49:30,626 INFO L226 Difference]: Without dead ends: 113779 [2022-11-25 16:49:30,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:30,660 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 724 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:30,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1197 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 16:49:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113779 states. [2022-11-25 16:49:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113779 to 112982. [2022-11-25 16:49:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112982 states, 112981 states have (on average 1.081836769014259) internal successors, (122227), 112981 states have internal predecessors, (122227), 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) [2022-11-25 16:49:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112982 states to 112982 states and 122227 transitions. [2022-11-25 16:49:32,672 INFO L78 Accepts]: Start accepts. Automaton has 112982 states and 122227 transitions. Word has length 341 [2022-11-25 16:49:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:32,673 INFO L495 AbstractCegarLoop]: Abstraction has 112982 states and 122227 transitions. [2022-11-25 16:49:32,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2022-11-25 16:49:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 112982 states and 122227 transitions. [2022-11-25 16:49:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-11-25 16:49:32,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:32,680 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 16:49:32,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:49:32,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1539895112, now seen corresponding path program 1 times [2022-11-25 16:49:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:32,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533662072] [2022-11-25 16:49:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-25 16:49:33,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:33,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533662072] [2022-11-25 16:49:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533662072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:33,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:33,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372383585] [2022-11-25 16:49:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:33,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:49:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:49:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:49:33,394 INFO L87 Difference]: Start difference. First operand 112982 states and 122227 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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) [2022-11-25 16:49:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:43,418 INFO L93 Difference]: Finished difference Result 274832 states and 300813 transitions. [2022-11-25 16:49:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:49:43,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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 355 [2022-11-25 16:49:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:43,639 INFO L225 Difference]: With dead ends: 274832 [2022-11-25 16:49:43,640 INFO L226 Difference]: Without dead ends: 179174 [2022-11-25 16:49:43,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:49:43,690 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 1638 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5280 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 6090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 5280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:43,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 947 Invalid, 6090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 5280 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-25 16:49:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179174 states. [2022-11-25 16:49:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179174 to 178336. [2022-11-25 16:49:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178336 states, 178335 states have (on average 1.0821655872375024) internal successors, (192988), 178335 states have internal predecessors, (192988), 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) [2022-11-25 16:49:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178336 states to 178336 states and 192988 transitions. [2022-11-25 16:49:47,134 INFO L78 Accepts]: Start accepts. Automaton has 178336 states and 192988 transitions. Word has length 355 [2022-11-25 16:49:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:47,135 INFO L495 AbstractCegarLoop]: Abstraction has 178336 states and 192988 transitions. [2022-11-25 16:49:47,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 3 states have internal predecessors, (173), 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) [2022-11-25 16:49:47,136 INFO L276 IsEmpty]: Start isEmpty. Operand 178336 states and 192988 transitions. [2022-11-25 16:49:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-25 16:49:47,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:47,142 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-11-25 16:49:47,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:49:47,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:47,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:47,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2088568846, now seen corresponding path program 1 times [2022-11-25 16:49:47,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:47,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437097033] [2022-11-25 16:49:47,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:47,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-25 16:49:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437097033] [2022-11-25 16:49:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437097033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:49:47,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:49:47,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:49:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904200367] [2022-11-25 16:49:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:49:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:49:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:49:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:49:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:49:47,466 INFO L87 Difference]: Start difference. First operand 178336 states and 192988 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2022-11-25 16:49:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:49:54,124 INFO L93 Difference]: Finished difference Result 359058 states and 388375 transitions. [2022-11-25 16:49:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:49:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 357 [2022-11-25 16:49:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:49:54,587 INFO L225 Difference]: With dead ends: 359058 [2022-11-25 16:49:54,587 INFO L226 Difference]: Without dead ends: 180724 [2022-11-25 16:49:54,682 INFO L412 NwaCegarLoop]: 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 [2022-11-25 16:49:54,683 INFO L413 NwaCegarLoop]: 1273 mSDtfsCounter, 1087 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:49:54,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1323 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 16:49:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180724 states. [2022-11-25 16:49:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180724 to 175184. [2022-11-25 16:49:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175184 states, 175183 states have (on average 1.077952769389724) internal successors, (188839), 175183 states have internal predecessors, (188839), 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) [2022-11-25 16:49:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175184 states to 175184 states and 188839 transitions. [2022-11-25 16:49:57,796 INFO L78 Accepts]: Start accepts. Automaton has 175184 states and 188839 transitions. Word has length 357 [2022-11-25 16:49:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:49:57,797 INFO L495 AbstractCegarLoop]: Abstraction has 175184 states and 188839 transitions. [2022-11-25 16:49:57,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2022-11-25 16:49:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 175184 states and 188839 transitions. [2022-11-25 16:49:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-11-25 16:49:57,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:49:57,803 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 16:49:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 16:49:57,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:49:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:49:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 221236577, now seen corresponding path program 1 times [2022-11-25 16:49:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:49:57,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726016432] [2022-11-25 16:49:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:49:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:49:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 252 proven. 113 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 16:49:59,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:49:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726016432] [2022-11-25 16:49:59,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726016432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:49:59,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939253672] [2022-11-25 16:49:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:49:59,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:49:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:49:59,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:49:59,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6983dbda-7fed-43c4-8bd3-d83711528f9f/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:50:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 16:50:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:00,377 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 16:50:00,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:50:00,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939253672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:00,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:50:00,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 16:50:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162002165] [2022-11-25 16:50:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:00,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:00,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:00,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:50:00,395 INFO L87 Difference]: Start difference. First operand 175184 states and 188839 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2022-11-25 16:50:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:07,316 INFO L93 Difference]: Finished difference Result 347216 states and 374217 transitions. [2022-11-25 16:50:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 370 [2022-11-25 16:50:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:07,614 INFO L225 Difference]: With dead ends: 347216 [2022-11-25 16:50:07,615 INFO L226 Difference]: Without dead ends: 172821 [2022-11-25 16:50:07,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:50:07,731 INFO L413 NwaCegarLoop]: 1337 mSDtfsCounter, 1094 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:07,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1416 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 16:50:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172821 states.