./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/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_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c --- 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 15:51:37,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:51:37,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:51:37,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:51:37,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:51:37,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:51:37,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:51:37,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:51:37,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:51:37,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:51:37,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:51:37,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:51:37,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:51:37,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:51:37,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:51:37,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:51:37,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:51:37,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:51:37,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:51:37,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:51:37,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:51:37,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:51:37,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:51:38,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:51:38,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:51:38,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:51:38,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:51:38,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:51:38,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:51:38,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:51:38,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:51:38,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:51:38,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:51:38,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:51:38,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:51:38,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:51:38,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:51:38,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:51:38,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:51:38,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:51:38,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:51:38,035 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-25 15:51:38,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:51:38,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:51:38,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:51:38,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:51:38,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:51:38,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:51:38,090 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:51:38,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 15:51:38,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 15:51:38,091 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 15:51:38,092 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 15:51:38,092 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 15:51:38,093 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 15:51:38,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:51:38,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:51:38,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:51:38,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:51:38,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:51:38,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:51:38,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 15:51:38,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 15:51:38,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 15:51:38,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:51:38,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:51:38,097 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 15:51:38,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:51:38,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 15:51:38,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:51:38,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:51:38,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:51:38,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:51:38,102 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 15:51:38,103 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2022-11-25 15:51:38,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:51:38,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:51:38,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:51:38,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:51:38,500 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:51:38,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/locks/test_locks_14-2.c [2022-11-25 15:51:41,795 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:51:42,068 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:51:42,069 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/sv-benchmarks/c/locks/test_locks_14-2.c [2022-11-25 15:51:42,076 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/data/161c41f1b/9396243b36904f14be52d5863be5bc2d/FLAG112f1385a [2022-11-25 15:51:42,092 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/data/161c41f1b/9396243b36904f14be52d5863be5bc2d [2022-11-25 15:51:42,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:51:42,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:51:42,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:42,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:51:42,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:51:42,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c98a583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42, skipping insertion in model container [2022-11-25 15:51:42,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:51:42,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:51:42,346 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_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2022-11-25 15:51:42,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:42,378 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:51:42,439 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_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2022-11-25 15:51:42,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:51:42,466 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:51:42,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42 WrapperNode [2022-11-25 15:51:42,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:51:42,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:42,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:51:42,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:51:42,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,540 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2022-11-25 15:51:42,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:51:42,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:51:42,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:51:42,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:51:42,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,595 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:51:42,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:51:42,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:51:42,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:51:42,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (1/1) ... [2022-11-25 15:51:42,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:51:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:42,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:51:42,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 15:51:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:51:42,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:51:42,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:51:42,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:51:42,856 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:51:42,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:51:43,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:51:43,249 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:51:43,249 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:51:43,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:43 BoogieIcfgContainer [2022-11-25 15:51:43,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:51:43,253 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 15:51:43,254 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 15:51:43,262 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 15:51:43,263 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:51:43,264 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 03:51:42" (1/3) ... [2022-11-25 15:51:43,266 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@176dddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:51:43, skipping insertion in model container [2022-11-25 15:51:43,267 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:51:43,267 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:51:42" (2/3) ... [2022-11-25 15:51:43,269 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@176dddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:51:43, skipping insertion in model container [2022-11-25 15:51:43,269 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:51:43,269 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:43" (3/3) ... [2022-11-25 15:51:43,275 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_14-2.c [2022-11-25 15:51:43,365 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 15:51:43,365 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 15:51:43,365 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 15:51:43,365 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 15:51:43,366 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 15:51:43,366 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 15:51:43,366 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 15:51:43,366 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 15:51:43,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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 15:51:43,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2022-11-25 15:51:43,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:43,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:43,410 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:43,411 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:43,411 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 15:51:43,412 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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 15:51:43,422 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2022-11-25 15:51:43,422 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:43,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:43,424 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:43,425 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:43,434 INFO L748 eck$LassoCheckResult]: Stem: 40#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 34#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 31#L211true [2022-11-25 15:51:43,438 INFO L750 eck$LassoCheckResult]: Loop: 31#L211true assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 45#L55true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 22#L88true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 11#L88-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 32#L92-1true assume !(0 != main_~p3~0#1); 3#L96-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 6#L100-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 48#L104-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 12#L108-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 51#L112-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 26#L116-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 38#L120-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 33#L124-1true assume !(0 != main_~p11~0#1); 16#L128-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 46#L132-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 41#L136-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 37#L140-1true assume !(0 != main_~p1~0#1); 17#L146-1true assume 0 != main_~p2~0#1; 27#L152true assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 13#L151true assume !(0 != main_~p3~0#1); 28#L156-1true assume !(0 != main_~p4~0#1); 4#L161-1true assume !(0 != main_~p5~0#1); 10#L166-1true assume !(0 != main_~p6~0#1); 24#L171-1true assume !(0 != main_~p7~0#1); 20#L176-1true assume !(0 != main_~p8~0#1); 49#L181-1true assume !(0 != main_~p9~0#1); 21#L186-1true assume !(0 != main_~p10~0#1); 36#L191-1true assume !(0 != main_~p11~0#1); 50#L196-1true assume !(0 != main_~p12~0#1); 25#L201-1true assume !(0 != main_~p13~0#1); 14#L206-1true assume 0 != main_~p14~0#1; 8#L212true assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 31#L211true [2022-11-25 15:51:43,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-25 15:51:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:43,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221212483] [2022-11-25 15:51:43,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:43,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:43,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1237702727, now seen corresponding path program 1 times [2022-11-25 15:51:43,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689029195] [2022-11-25 15:51:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:43,875 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 15:51:43,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689029195] [2022-11-25 15:51:43,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689029195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:43,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:43,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119999410] [2022-11-25 15:51:43,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:43,885 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:43,938 INFO L87 Difference]: Start difference. First operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:44,017 INFO L93 Difference]: Finished difference Result 99 states and 178 transitions. [2022-11-25 15:51:44,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 178 transitions. [2022-11-25 15:51:44,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2022-11-25 15:51:44,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 139 transitions. [2022-11-25 15:51:44,041 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2022-11-25 15:51:44,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2022-11-25 15:51:44,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 139 transitions. [2022-11-25 15:51:44,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:44,047 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-25 15:51:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 139 transitions. [2022-11-25 15:51:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-25 15:51:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 88 states have internal predecessors, (139), 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 15:51:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2022-11-25 15:51:44,105 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-25 15:51:44,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:44,121 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-25 15:51:44,121 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 15:51:44,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 139 transitions. [2022-11-25 15:51:44,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2022-11-25 15:51:44,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:44,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:44,130 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:44,131 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:44,131 INFO L748 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 175#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 176#L211 [2022-11-25 15:51:44,132 INFO L750 eck$LassoCheckResult]: Loop: 176#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 222#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 221#L88 assume !(0 != main_~p1~0#1); 220#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 219#L92-1 assume !(0 != main_~p3~0#1); 218#L96-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 217#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 207#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 186#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 187#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 205#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 184#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 173#L124-1 assume !(0 != main_~p11~0#1); 174#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 194#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 212#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 210#L140-1 assume !(0 != main_~p1~0#1); 211#L146-1 assume 0 != main_~p2~0#1; 247#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 246#L151 assume !(0 != main_~p3~0#1); 244#L156-1 assume !(0 != main_~p4~0#1); 242#L161-1 assume !(0 != main_~p5~0#1); 240#L166-1 assume !(0 != main_~p6~0#1); 237#L171-1 assume !(0 != main_~p7~0#1); 236#L176-1 assume !(0 != main_~p8~0#1); 234#L181-1 assume !(0 != main_~p9~0#1); 231#L186-1 assume !(0 != main_~p10~0#1); 230#L191-1 assume !(0 != main_~p11~0#1); 228#L196-1 assume !(0 != main_~p12~0#1); 226#L201-1 assume !(0 != main_~p13~0#1); 224#L206-1 assume 0 != main_~p14~0#1; 223#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 176#L211 [2022-11-25 15:51:44,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-25 15:51:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511915650] [2022-11-25 15:51:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:44,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1215070473, now seen corresponding path program 1 times [2022-11-25 15:51:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477198534] [2022-11-25 15:51:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:44,225 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 15:51:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:44,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477198534] [2022-11-25 15:51:44,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477198534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:44,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:44,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686452683] [2022-11-25 15:51:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:44,227 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:44,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:44,259 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. cyclomatic complexity: 52 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:44,289 INFO L93 Difference]: Finished difference Result 174 states and 270 transitions. [2022-11-25 15:51:44,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 270 transitions. [2022-11-25 15:51:44,298 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2022-11-25 15:51:44,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 270 transitions. [2022-11-25 15:51:44,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2022-11-25 15:51:44,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2022-11-25 15:51:44,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 270 transitions. [2022-11-25 15:51:44,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:44,307 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-25 15:51:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 270 transitions. [2022-11-25 15:51:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-25 15:51:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.5517241379310345) internal successors, (270), 173 states have internal predecessors, (270), 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 15:51:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2022-11-25 15:51:44,332 INFO L240 hiAutomatonCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-25 15:51:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:44,334 INFO L428 stractBuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-25 15:51:44,335 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 15:51:44,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 270 transitions. [2022-11-25 15:51:44,337 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2022-11-25 15:51:44,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:44,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:44,339 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:44,341 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:44,341 INFO L748 eck$LassoCheckResult]: Stem: 462#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 444#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 445#L211 [2022-11-25 15:51:44,342 INFO L750 eck$LassoCheckResult]: Loop: 445#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 504#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 502#L88 assume !(0 != main_~p1~0#1); 499#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 496#L92-1 assume !(0 != main_~p3~0#1); 492#L96-1 assume !(0 != main_~p4~0#1); 489#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 488#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 487#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 486#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 475#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 453#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 442#L124-1 assume !(0 != main_~p11~0#1); 443#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 463#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 482#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 479#L140-1 assume !(0 != main_~p1~0#1); 481#L146-1 assume 0 != main_~p2~0#1; 574#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 571#L151 assume !(0 != main_~p3~0#1); 568#L156-1 assume !(0 != main_~p4~0#1); 566#L161-1 assume !(0 != main_~p5~0#1); 562#L166-1 assume !(0 != main_~p6~0#1); 555#L171-1 assume !(0 != main_~p7~0#1); 552#L176-1 assume !(0 != main_~p8~0#1); 535#L181-1 assume !(0 != main_~p9~0#1); 532#L186-1 assume !(0 != main_~p10~0#1); 531#L191-1 assume !(0 != main_~p11~0#1); 529#L196-1 assume !(0 != main_~p12~0#1); 527#L201-1 assume !(0 != main_~p13~0#1); 519#L206-1 assume 0 != main_~p14~0#1; 518#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 445#L211 [2022-11-25 15:51:44,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,343 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-25 15:51:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636078805] [2022-11-25 15:51:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,361 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,376 INFO L85 PathProgramCache]: Analyzing trace with hash 708157561, now seen corresponding path program 1 times [2022-11-25 15:51:44,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143396896] [2022-11-25 15:51:44,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:44,449 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 15:51:44,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:44,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143396896] [2022-11-25 15:51:44,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143396896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:44,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:44,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:44,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86987485] [2022-11-25 15:51:44,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:44,451 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:44,452 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. cyclomatic complexity: 100 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:44,473 INFO L93 Difference]: Finished difference Result 342 states and 526 transitions. [2022-11-25 15:51:44,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 526 transitions. [2022-11-25 15:51:44,477 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2022-11-25 15:51:44,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 526 transitions. [2022-11-25 15:51:44,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2022-11-25 15:51:44,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2022-11-25 15:51:44,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 526 transitions. [2022-11-25 15:51:44,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:44,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-25 15:51:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 526 transitions. [2022-11-25 15:51:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2022-11-25 15:51:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.5380116959064327) internal successors, (526), 341 states have internal predecessors, (526), 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 15:51:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 526 transitions. [2022-11-25 15:51:44,512 INFO L240 hiAutomatonCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-25 15:51:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:44,518 INFO L428 stractBuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-25 15:51:44,518 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 15:51:44,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 526 transitions. [2022-11-25 15:51:44,521 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2022-11-25 15:51:44,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:44,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:44,522 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:44,522 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:44,523 INFO L748 eck$LassoCheckResult]: Stem: 984#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 966#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 967#L211 [2022-11-25 15:51:44,524 INFO L750 eck$LassoCheckResult]: Loop: 967#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 1039#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 1035#L88 assume !(0 != main_~p1~0#1); 1029#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 1025#L92-1 assume !(0 != main_~p3~0#1); 1026#L96-1 assume !(0 != main_~p4~0#1); 1164#L100-1 assume !(0 != main_~p5~0#1); 1162#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1160#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1158#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1156#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1154#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1152#L124-1 assume !(0 != main_~p11~0#1); 1150#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1148#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1146#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1143#L140-1 assume !(0 != main_~p1~0#1); 1140#L146-1 assume 0 != main_~p2~0#1; 1138#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 1131#L151 assume !(0 != main_~p3~0#1); 1126#L156-1 assume !(0 != main_~p4~0#1); 1123#L161-1 assume !(0 != main_~p5~0#1); 1120#L166-1 assume !(0 != main_~p6~0#1); 1115#L171-1 assume !(0 != main_~p7~0#1); 1112#L176-1 assume !(0 != main_~p8~0#1); 1109#L181-1 assume !(0 != main_~p9~0#1); 1105#L186-1 assume !(0 != main_~p10~0#1); 1102#L191-1 assume !(0 != main_~p11~0#1); 1084#L196-1 assume !(0 != main_~p12~0#1); 1060#L201-1 assume !(0 != main_~p13~0#1); 1050#L206-1 assume 0 != main_~p14~0#1; 1046#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 967#L211 [2022-11-25 15:51:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-11-25 15:51:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526784702] [2022-11-25 15:51:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 770197175, now seen corresponding path program 1 times [2022-11-25 15:51:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035081595] [2022-11-25 15:51:44,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:44,639 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 15:51:44,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:44,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035081595] [2022-11-25 15:51:44,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035081595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:44,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:44,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605793310] [2022-11-25 15:51:44,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:44,641 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:44,643 INFO L87 Difference]: Start difference. First operand 342 states and 526 transitions. cyclomatic complexity: 192 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:44,677 INFO L93 Difference]: Finished difference Result 674 states and 1026 transitions. [2022-11-25 15:51:44,678 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1026 transitions. [2022-11-25 15:51:44,685 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2022-11-25 15:51:44,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1026 transitions. [2022-11-25 15:51:44,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2022-11-25 15:51:44,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2022-11-25 15:51:44,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1026 transitions. [2022-11-25 15:51:44,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:44,703 INFO L218 hiAutomatonCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-25 15:51:44,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1026 transitions. [2022-11-25 15:51:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2022-11-25 15:51:44,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 674 states have (on average 1.5222551928783383) internal successors, (1026), 673 states have internal predecessors, (1026), 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 15:51:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1026 transitions. [2022-11-25 15:51:44,734 INFO L240 hiAutomatonCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-25 15:51:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:44,737 INFO L428 stractBuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-25 15:51:44,738 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 15:51:44,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1026 transitions. [2022-11-25 15:51:44,743 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2022-11-25 15:51:44,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:44,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:44,746 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:44,746 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:44,746 INFO L748 eck$LassoCheckResult]: Stem: 2007#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1989#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 1990#L211 [2022-11-25 15:51:44,746 INFO L750 eck$LassoCheckResult]: Loop: 1990#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 2054#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 2055#L88 assume !(0 != main_~p1~0#1); 2248#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 2255#L92-1 assume !(0 != main_~p3~0#1); 2254#L96-1 assume !(0 != main_~p4~0#1); 2251#L100-1 assume !(0 != main_~p5~0#1); 2177#L104-1 assume !(0 != main_~p6~0#1); 2179#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2169#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2170#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2161#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2162#L124-1 assume !(0 != main_~p11~0#1); 2153#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2154#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2145#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2146#L140-1 assume !(0 != main_~p1~0#1); 2221#L146-1 assume 0 != main_~p2~0#1; 2218#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 2215#L151 assume !(0 != main_~p3~0#1); 2214#L156-1 assume !(0 != main_~p4~0#1); 2295#L161-1 assume !(0 != main_~p5~0#1); 2294#L166-1 assume !(0 != main_~p6~0#1); 2292#L171-1 assume !(0 != main_~p7~0#1); 2291#L176-1 assume !(0 != main_~p8~0#1); 2281#L181-1 assume !(0 != main_~p9~0#1); 2241#L186-1 assume !(0 != main_~p10~0#1); 2242#L191-1 assume !(0 != main_~p11~0#1); 2183#L196-1 assume !(0 != main_~p12~0#1); 2182#L201-1 assume !(0 != main_~p13~0#1); 2072#L206-1 assume 0 != main_~p14~0#1; 2066#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 1990#L211 [2022-11-25 15:51:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2022-11-25 15:51:44,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444819399] [2022-11-25 15:51:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:44,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash 910745785, now seen corresponding path program 1 times [2022-11-25 15:51:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367398656] [2022-11-25 15:51:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:44,847 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 15:51:44,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:44,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367398656] [2022-11-25 15:51:44,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367398656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:44,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:44,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:44,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656765122] [2022-11-25 15:51:44,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:44,849 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:44,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:44,850 INFO L87 Difference]: Start difference. First operand 674 states and 1026 transitions. cyclomatic complexity: 368 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:44,900 INFO L93 Difference]: Finished difference Result 1330 states and 2002 transitions. [2022-11-25 15:51:44,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2002 transitions. [2022-11-25 15:51:44,915 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2022-11-25 15:51:44,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2002 transitions. [2022-11-25 15:51:44,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2022-11-25 15:51:44,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2022-11-25 15:51:44,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2002 transitions. [2022-11-25 15:51:44,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:44,930 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-25 15:51:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2002 transitions. [2022-11-25 15:51:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2022-11-25 15:51:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1330 states have (on average 1.5052631578947369) internal successors, (2002), 1329 states have internal predecessors, (2002), 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 15:51:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2002 transitions. [2022-11-25 15:51:44,963 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-25 15:51:44,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:44,970 INFO L428 stractBuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-25 15:51:44,971 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 15:51:44,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2002 transitions. [2022-11-25 15:51:44,981 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2022-11-25 15:51:44,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:44,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:44,982 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:44,982 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:44,983 INFO L748 eck$LassoCheckResult]: Stem: 4016#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3998#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 3999#L211 [2022-11-25 15:51:44,983 INFO L750 eck$LassoCheckResult]: Loop: 3999#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 4129#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 4125#L88 assume !(0 != main_~p1~0#1); 4121#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 4117#L92-1 assume !(0 != main_~p3~0#1); 4110#L96-1 assume !(0 != main_~p4~0#1); 4102#L100-1 assume !(0 != main_~p5~0#1); 4094#L104-1 assume !(0 != main_~p6~0#1); 4088#L108-1 assume !(0 != main_~p7~0#1); 4084#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4082#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4080#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4078#L124-1 assume !(0 != main_~p11~0#1); 4075#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4076#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4229#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4068#L140-1 assume !(0 != main_~p1~0#1); 4062#L146-1 assume 0 != main_~p2~0#1; 4063#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 4219#L151 assume !(0 != main_~p3~0#1); 4211#L156-1 assume !(0 != main_~p4~0#1); 4203#L161-1 assume !(0 != main_~p5~0#1); 4198#L166-1 assume !(0 != main_~p6~0#1); 4193#L171-1 assume !(0 != main_~p7~0#1); 4190#L176-1 assume !(0 != main_~p8~0#1); 4186#L181-1 assume !(0 != main_~p9~0#1); 4180#L186-1 assume !(0 != main_~p10~0#1); 4164#L191-1 assume !(0 != main_~p11~0#1); 4160#L196-1 assume !(0 != main_~p12~0#1); 4146#L201-1 assume !(0 != main_~p13~0#1); 4140#L206-1 assume 0 != main_~p14~0#1; 4136#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 3999#L211 [2022-11-25 15:51:44,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2022-11-25 15:51:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:44,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6484932] [2022-11-25 15:51:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:44,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:45,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:45,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 776732279, now seen corresponding path program 1 times [2022-11-25 15:51:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447521272] [2022-11-25 15:51:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,048 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 15:51:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:45,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447521272] [2022-11-25 15:51:45,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447521272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:45,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:45,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626351166] [2022-11-25 15:51:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:45,050 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:45,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:45,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:45,052 INFO L87 Difference]: Start difference. First operand 1330 states and 2002 transitions. cyclomatic complexity: 704 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:45,078 INFO L93 Difference]: Finished difference Result 2626 states and 3906 transitions. [2022-11-25 15:51:45,078 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 3906 transitions. [2022-11-25 15:51:45,102 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2022-11-25 15:51:45,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 3906 transitions. [2022-11-25 15:51:45,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2022-11-25 15:51:45,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2022-11-25 15:51:45,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 3906 transitions. [2022-11-25 15:51:45,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:45,126 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-25 15:51:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 3906 transitions. [2022-11-25 15:51:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2022-11-25 15:51:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2626 states have (on average 1.4874333587204875) internal successors, (3906), 2625 states have internal predecessors, (3906), 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 15:51:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3906 transitions. [2022-11-25 15:51:45,229 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-25 15:51:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:45,230 INFO L428 stractBuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-25 15:51:45,231 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-25 15:51:45,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 3906 transitions. [2022-11-25 15:51:45,244 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2022-11-25 15:51:45,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:45,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:45,246 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:45,246 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:45,246 INFO L748 eck$LassoCheckResult]: Stem: 7981#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7962#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 7963#L211 [2022-11-25 15:51:45,246 INFO L750 eck$LassoCheckResult]: Loop: 7963#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 8562#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 8560#L88 assume !(0 != main_~p1~0#1); 8559#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 8368#L92-1 assume !(0 != main_~p3~0#1); 8369#L96-1 assume !(0 != main_~p4~0#1); 8542#L100-1 assume !(0 != main_~p5~0#1); 8538#L104-1 assume !(0 != main_~p6~0#1); 8534#L108-1 assume !(0 != main_~p7~0#1); 8530#L112-1 assume !(0 != main_~p8~0#1); 8528#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8480#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8481#L124-1 assume !(0 != main_~p11~0#1); 8472#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8473#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8463#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8464#L140-1 assume !(0 != main_~p1~0#1); 8526#L146-1 assume 0 != main_~p2~0#1; 8525#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 8491#L151 assume !(0 != main_~p3~0#1); 8489#L156-1 assume !(0 != main_~p4~0#1); 8245#L161-1 assume !(0 != main_~p5~0#1); 8240#L166-1 assume !(0 != main_~p6~0#1); 8241#L171-1 assume !(0 != main_~p7~0#1); 8587#L176-1 assume !(0 != main_~p8~0#1); 8585#L181-1 assume !(0 != main_~p9~0#1); 8582#L186-1 assume !(0 != main_~p10~0#1); 8581#L191-1 assume !(0 != main_~p11~0#1); 8570#L196-1 assume !(0 != main_~p12~0#1); 8566#L201-1 assume !(0 != main_~p13~0#1); 8564#L206-1 assume 0 != main_~p14~0#1; 8563#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 7963#L211 [2022-11-25 15:51:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2022-11-25 15:51:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595698762] [2022-11-25 15:51:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:45,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:45,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1028706055, now seen corresponding path program 1 times [2022-11-25 15:51:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060868399] [2022-11-25 15:51:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,290 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 15:51:45,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060868399] [2022-11-25 15:51:45,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060868399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:45,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:45,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33515956] [2022-11-25 15:51:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:45,292 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:45,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:45,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:45,294 INFO L87 Difference]: Start difference. First operand 2626 states and 3906 transitions. cyclomatic complexity: 1344 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:45,333 INFO L93 Difference]: Finished difference Result 5186 states and 7618 transitions. [2022-11-25 15:51:45,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7618 transitions. [2022-11-25 15:51:45,373 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2022-11-25 15:51:45,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7618 transitions. [2022-11-25 15:51:45,403 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2022-11-25 15:51:45,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2022-11-25 15:51:45,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7618 transitions. [2022-11-25 15:51:45,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:45,418 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-25 15:51:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7618 transitions. [2022-11-25 15:51:45,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2022-11-25 15:51:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5186 states have (on average 1.4689548785190898) internal successors, (7618), 5185 states have internal predecessors, (7618), 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 15:51:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7618 transitions. [2022-11-25 15:51:45,568 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-25 15:51:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:45,570 INFO L428 stractBuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-25 15:51:45,570 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-25 15:51:45,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7618 transitions. [2022-11-25 15:51:45,606 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2022-11-25 15:51:45,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:45,607 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:45,607 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:45,607 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:45,607 INFO L748 eck$LassoCheckResult]: Stem: 15797#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 15778#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 15779#L211 [2022-11-25 15:51:45,608 INFO L750 eck$LassoCheckResult]: Loop: 15779#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 16492#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 16493#L88 assume !(0 != main_~p1~0#1); 16478#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 16479#L92-1 assume !(0 != main_~p3~0#1); 16474#L96-1 assume !(0 != main_~p4~0#1); 16475#L100-1 assume !(0 != main_~p5~0#1); 16603#L104-1 assume !(0 != main_~p6~0#1); 16600#L108-1 assume !(0 != main_~p7~0#1); 16595#L112-1 assume !(0 != main_~p8~0#1); 16585#L116-1 assume !(0 != main_~p9~0#1); 16584#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 16583#L124-1 assume !(0 != main_~p11~0#1); 16582#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 16316#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 16317#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 16297#L140-1 assume !(0 != main_~p1~0#1); 16299#L146-1 assume 0 != main_~p2~0#1; 16208#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 16209#L151 assume !(0 != main_~p3~0#1); 16198#L156-1 assume !(0 != main_~p4~0#1); 16199#L161-1 assume !(0 != main_~p5~0#1); 16188#L166-1 assume !(0 != main_~p6~0#1); 16189#L171-1 assume !(0 != main_~p7~0#1); 16575#L176-1 assume !(0 != main_~p8~0#1); 16627#L181-1 assume !(0 != main_~p9~0#1); 16625#L186-1 assume !(0 != main_~p10~0#1); 16624#L191-1 assume !(0 != main_~p11~0#1); 16622#L196-1 assume !(0 != main_~p12~0#1); 16521#L201-1 assume !(0 != main_~p13~0#1); 16520#L206-1 assume 0 != main_~p14~0#1; 16508#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 15779#L211 [2022-11-25 15:51:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2022-11-25 15:51:45,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088174308] [2022-11-25 15:51:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:45,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:45,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash -809851337, now seen corresponding path program 1 times [2022-11-25 15:51:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:45,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349462250] [2022-11-25 15:51:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:45,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:45,698 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 15:51:45,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:45,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349462250] [2022-11-25 15:51:45,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349462250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:45,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:45,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:45,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450350238] [2022-11-25 15:51:45,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:45,700 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:45,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:45,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:45,701 INFO L87 Difference]: Start difference. First operand 5186 states and 7618 transitions. cyclomatic complexity: 2560 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:45,812 INFO L93 Difference]: Finished difference Result 10242 states and 14850 transitions. [2022-11-25 15:51:45,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 14850 transitions. [2022-11-25 15:51:45,909 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2022-11-25 15:51:45,971 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 14850 transitions. [2022-11-25 15:51:45,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2022-11-25 15:51:45,983 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2022-11-25 15:51:45,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 14850 transitions. [2022-11-25 15:51:46,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:46,004 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-25 15:51:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 14850 transitions. [2022-11-25 15:51:46,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2022-11-25 15:51:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10242 states have (on average 1.4499121265377857) internal successors, (14850), 10241 states have internal predecessors, (14850), 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 15:51:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 14850 transitions. [2022-11-25 15:51:46,325 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-25 15:51:46,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:46,327 INFO L428 stractBuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-25 15:51:46,327 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-25 15:51:46,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 14850 transitions. [2022-11-25 15:51:46,376 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2022-11-25 15:51:46,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:46,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:46,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:46,377 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:46,377 INFO L748 eck$LassoCheckResult]: Stem: 31232#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 31212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 31213#L211 [2022-11-25 15:51:46,378 INFO L750 eck$LassoCheckResult]: Loop: 31213#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 31584#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 31585#L88 assume !(0 != main_~p1~0#1); 31684#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 31683#L92-1 assume !(0 != main_~p3~0#1); 31681#L96-1 assume !(0 != main_~p4~0#1); 31679#L100-1 assume !(0 != main_~p5~0#1); 31677#L104-1 assume !(0 != main_~p6~0#1); 31675#L108-1 assume !(0 != main_~p7~0#1); 31671#L112-1 assume !(0 != main_~p8~0#1); 31667#L116-1 assume !(0 != main_~p9~0#1); 31664#L120-1 assume !(0 != main_~p10~0#1); 31662#L124-1 assume !(0 != main_~p11~0#1); 31660#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 31658#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 31656#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 31654#L140-1 assume !(0 != main_~p1~0#1); 31652#L146-1 assume 0 != main_~p2~0#1; 31650#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 31647#L151 assume !(0 != main_~p3~0#1); 31642#L156-1 assume !(0 != main_~p4~0#1); 31638#L161-1 assume !(0 != main_~p5~0#1); 31634#L166-1 assume !(0 != main_~p6~0#1); 31630#L171-1 assume !(0 != main_~p7~0#1); 31626#L176-1 assume !(0 != main_~p8~0#1); 31622#L181-1 assume !(0 != main_~p9~0#1); 31623#L186-1 assume !(0 != main_~p10~0#1); 31614#L191-1 assume !(0 != main_~p11~0#1); 31613#L196-1 assume !(0 != main_~p12~0#1); 31602#L201-1 assume !(0 != main_~p13~0#1); 31601#L206-1 assume 0 != main_~p14~0#1; 31592#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 31213#L211 [2022-11-25 15:51:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2022-11-25 15:51:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:46,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865534210] [2022-11-25 15:51:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:46,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:46,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:46,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:46,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash -387149511, now seen corresponding path program 1 times [2022-11-25 15:51:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:46,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788299629] [2022-11-25 15:51:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:46,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:46,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788299629] [2022-11-25 15:51:46,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788299629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:46,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:46,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039571641] [2022-11-25 15:51:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:46,455 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:46,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:46,456 INFO L87 Difference]: Start difference. First operand 10242 states and 14850 transitions. cyclomatic complexity: 4864 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:46,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:46,562 INFO L93 Difference]: Finished difference Result 20226 states and 28930 transitions. [2022-11-25 15:51:46,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 28930 transitions. [2022-11-25 15:51:46,827 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2022-11-25 15:51:46,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 28930 transitions. [2022-11-25 15:51:46,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2022-11-25 15:51:46,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2022-11-25 15:51:46,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 28930 transitions. [2022-11-25 15:51:47,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:47,009 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-25 15:51:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 28930 transitions. [2022-11-25 15:51:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2022-11-25 15:51:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20226 states, 20226 states have (on average 1.43033718975576) internal successors, (28930), 20225 states have internal predecessors, (28930), 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 15:51:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 28930 transitions. [2022-11-25 15:51:47,458 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-25 15:51:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:47,459 INFO L428 stractBuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-25 15:51:47,460 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-25 15:51:47,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 28930 transitions. [2022-11-25 15:51:47,557 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2022-11-25 15:51:47,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:47,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:47,559 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:47,559 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:47,559 INFO L748 eck$LassoCheckResult]: Stem: 61707#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 61687#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 61688#L211 [2022-11-25 15:51:47,560 INFO L750 eck$LassoCheckResult]: Loop: 61688#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 61838#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 61836#L88 assume !(0 != main_~p1~0#1); 61834#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 61832#L92-1 assume !(0 != main_~p3~0#1); 61828#L96-1 assume !(0 != main_~p4~0#1); 61824#L100-1 assume !(0 != main_~p5~0#1); 61820#L104-1 assume !(0 != main_~p6~0#1); 61816#L108-1 assume !(0 != main_~p7~0#1); 61812#L112-1 assume !(0 != main_~p8~0#1); 61808#L116-1 assume !(0 != main_~p9~0#1); 61804#L120-1 assume !(0 != main_~p10~0#1); 61802#L124-1 assume !(0 != main_~p11~0#1); 61798#L128-1 assume !(0 != main_~p12~0#1); 61796#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 61794#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 61792#L140-1 assume !(0 != main_~p1~0#1); 61787#L146-1 assume 0 != main_~p2~0#1; 61784#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 61780#L151 assume !(0 != main_~p3~0#1); 61779#L156-1 assume !(0 != main_~p4~0#1); 61877#L161-1 assume !(0 != main_~p5~0#1); 61873#L166-1 assume !(0 != main_~p6~0#1); 61869#L171-1 assume !(0 != main_~p7~0#1); 61865#L176-1 assume !(0 != main_~p8~0#1); 61861#L181-1 assume !(0 != main_~p9~0#1); 61857#L186-1 assume !(0 != main_~p10~0#1); 61854#L191-1 assume !(0 != main_~p11~0#1); 61849#L196-1 assume !(0 != main_~p12~0#1); 61846#L201-1 assume !(0 != main_~p13~0#1); 61843#L206-1 assume 0 != main_~p14~0#1; 61841#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 61688#L211 [2022-11-25 15:51:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2022-11-25 15:51:47,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:47,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922992650] [2022-11-25 15:51:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:47,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:47,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:47,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:47,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2076093253, now seen corresponding path program 1 times [2022-11-25 15:51:47,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:47,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616390798] [2022-11-25 15:51:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:47,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:47,610 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 15:51:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:47,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616390798] [2022-11-25 15:51:47,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616390798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:51:47,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:51:47,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:51:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653904418] [2022-11-25 15:51:47,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:51:47,613 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:51:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:47,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:51:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:51:47,626 INFO L87 Difference]: Start difference. First operand 20226 states and 28930 transitions. cyclomatic complexity: 9216 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 15:51:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:51:48,000 INFO L93 Difference]: Finished difference Result 39938 states and 56322 transitions. [2022-11-25 15:51:48,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 56322 transitions. [2022-11-25 15:51:48,451 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2022-11-25 15:51:48,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 56322 transitions. [2022-11-25 15:51:48,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2022-11-25 15:51:48,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2022-11-25 15:51:48,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 56322 transitions. [2022-11-25 15:51:48,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:51:48,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-25 15:51:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 56322 transitions. [2022-11-25 15:51:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2022-11-25 15:51:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39938 states, 39938 states have (on average 1.4102358655916671) internal successors, (56322), 39937 states have internal predecessors, (56322), 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 15:51:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 56322 transitions. [2022-11-25 15:51:49,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-25 15:51:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:51:49,536 INFO L428 stractBuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-25 15:51:49,537 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-25 15:51:49,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 56322 transitions. [2022-11-25 15:51:49,979 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2022-11-25 15:51:49,979 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:51:49,979 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:51:49,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:51:49,980 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:49,980 INFO L748 eck$LassoCheckResult]: Stem: 121873#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 121856#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 121857#L211 [2022-11-25 15:51:49,981 INFO L750 eck$LassoCheckResult]: Loop: 121857#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 122287#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 122283#L88 assume !(0 != main_~p1~0#1); 122281#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 122279#L92-1 assume !(0 != main_~p3~0#1); 122275#L96-1 assume !(0 != main_~p4~0#1); 122271#L100-1 assume !(0 != main_~p5~0#1); 122267#L104-1 assume !(0 != main_~p6~0#1); 122263#L108-1 assume !(0 != main_~p7~0#1); 122259#L112-1 assume !(0 != main_~p8~0#1); 122255#L116-1 assume !(0 != main_~p9~0#1); 122251#L120-1 assume !(0 != main_~p10~0#1); 122249#L124-1 assume !(0 != main_~p11~0#1); 122246#L128-1 assume !(0 != main_~p12~0#1); 122247#L132-1 assume !(0 != main_~p13~0#1); 122340#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 122337#L140-1 assume !(0 != main_~p1~0#1); 122335#L146-1 assume 0 != main_~p2~0#1; 122332#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 122329#L151 assume !(0 != main_~p3~0#1); 122324#L156-1 assume !(0 != main_~p4~0#1); 122320#L161-1 assume !(0 != main_~p5~0#1); 122316#L166-1 assume !(0 != main_~p6~0#1); 122312#L171-1 assume !(0 != main_~p7~0#1); 122308#L176-1 assume !(0 != main_~p8~0#1); 122304#L181-1 assume !(0 != main_~p9~0#1); 122300#L186-1 assume !(0 != main_~p10~0#1); 122298#L191-1 assume !(0 != main_~p11~0#1); 122296#L196-1 assume !(0 != main_~p12~0#1); 122294#L201-1 assume !(0 != main_~p13~0#1); 122292#L206-1 assume 0 != main_~p14~0#1; 122290#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 121857#L211 [2022-11-25 15:51:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:49,981 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2022-11-25 15:51:49,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:49,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125123230] [2022-11-25 15:51:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:49,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:49,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash 224729337, now seen corresponding path program 1 times [2022-11-25 15:51:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:50,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832759679] [2022-11-25 15:51:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:50,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:50,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash -233466693, now seen corresponding path program 1 times [2022-11-25 15:51:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:50,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592486266] [2022-11-25 15:51:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:51:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:51:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:51:50,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 03:51:50 BoogieIcfgContainer [2022-11-25 15:51:50,849 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 15:51:50,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:51:50,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:51:50,850 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:51:50,850 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:51:43" (3/4) ... [2022-11-25 15:51:50,853 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-25 15:51:50,906 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:51:50,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:51:50,907 INFO L158 Benchmark]: Toolchain (without parser) took 8811.00ms. Allocated memory was 201.3MB in the beginning and 989.9MB in the end (delta: 788.5MB). Free memory was 155.7MB in the beginning and 620.0MB in the end (delta: -464.3MB). Peak memory consumption was 327.4MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,908 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:51:50,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.78ms. Allocated memory is still 201.3MB. Free memory was 155.0MB in the beginning and 143.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.63ms. Allocated memory is still 201.3MB. Free memory was 143.8MB in the beginning and 142.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,909 INFO L158 Benchmark]: Boogie Preprocessor took 57.99ms. Allocated memory is still 201.3MB. Free memory was 142.4MB in the beginning and 141.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:51:50,909 INFO L158 Benchmark]: RCFGBuilder took 652.56ms. Allocated memory is still 201.3MB. Free memory was 141.1MB in the beginning and 126.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,910 INFO L158 Benchmark]: BuchiAutomizer took 7595.44ms. Allocated memory was 201.3MB in the beginning and 989.9MB in the end (delta: 788.5MB). Free memory was 126.4MB in the beginning and 623.2MB in the end (delta: -496.8MB). Peak memory consumption was 293.8MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,910 INFO L158 Benchmark]: Witness Printer took 57.39ms. Allocated memory is still 989.9MB. Free memory was 623.2MB in the beginning and 620.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 15:51:50,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory was 85.3MB in the beginning and 85.2MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.78ms. Allocated memory is still 201.3MB. Free memory was 155.0MB in the beginning and 143.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.63ms. Allocated memory is still 201.3MB. Free memory was 143.8MB in the beginning and 142.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.99ms. Allocated memory is still 201.3MB. Free memory was 142.4MB in the beginning and 141.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 652.56ms. Allocated memory is still 201.3MB. Free memory was 141.1MB in the beginning and 126.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 7595.44ms. Allocated memory was 201.3MB in the beginning and 989.9MB in the end (delta: 788.5MB). Free memory was 126.4MB in the beginning and 623.2MB in the end (delta: -496.8MB). Peak memory consumption was 293.8MB. Max. memory is 16.1GB. * Witness Printer took 57.39ms. Allocated memory is still 989.9MB. Free memory was 623.2MB in the beginning and 620.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 39938 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 4.5s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 2.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 551 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 551 mSDsluCounter, 1762 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 679 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 1083 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI10 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 53]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND TRUE p2 != 0 [L93] lk2 = 1 [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND TRUE p2 != 0 [L152] COND FALSE !(lk2 != 1) [L153] lk2 = 0 [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND TRUE p14 != 0 [L212] COND FALSE !(lk14 != 1) [L213] lk14 = 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 53]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND TRUE p2 != 0 [L93] lk2 = 1 [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND TRUE p2 != 0 [L152] COND FALSE !(lk2 != 1) [L153] lk2 = 0 [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND TRUE p14 != 0 [L212] COND FALSE !(lk14 != 1) [L213] lk14 = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-25 15:51:50,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e24fd79b-3a9c-4ce4-bb6c-fcc3c75eedc1/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)