./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 8393723b 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_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:41:25,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:41:25,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:41:25,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:41:25,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:41:25,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:41:25,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:41:25,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:41:25,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:41:25,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:41:25,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:41:25,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:41:25,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:41:25,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:41:25,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:41:25,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:41:25,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:41:25,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:41:25,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:41:25,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:41:25,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:41:25,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:41:25,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:41:25,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:41:25,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:41:25,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:41:25,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:41:25,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:41:25,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:41:25,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:41:25,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:41:25,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:41:25,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:41:25,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:41:25,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:41:25,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:41:25,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:41:25,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:41:25,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:41:25,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:41:25,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:41:25,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-18 20:41:25,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:41:25,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:41:25,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:41:25,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:41:25,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:41:25,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:41:25,670 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:41:25,670 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:41:25,670 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:41:25,670 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:41:25,671 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:41:25,671 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:41:25,671 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:41:25,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:41:25,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:41:25,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:41:25,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:41:25,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:41:25,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:41:25,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:41:25,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:41:25,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:41:25,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:41:25,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:41:25,674 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:41:25,674 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:41:25,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:41:25,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:41:25,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:41:25,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:41:25,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:41:25,676 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:41:25,676 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_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2022-11-18 20:41:25,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:41:25,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:41:25,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:41:25,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:41:25,953 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:41:25,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/locks/test_locks_14-2.c [2022-11-18 20:41:26,058 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/data/db0a795ce/a89d85975ea447c9aad19481f61c7518/FLAGd6be98493 [2022-11-18 20:41:26,618 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:41:26,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/sv-benchmarks/c/locks/test_locks_14-2.c [2022-11-18 20:41:26,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/data/db0a795ce/a89d85975ea447c9aad19481f61c7518/FLAGd6be98493 [2022-11-18 20:41:26,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/data/db0a795ce/a89d85975ea447c9aad19481f61c7518 [2022-11-18 20:41:26,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:41:26,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:41:26,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:41:26,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:41:26,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:41:26,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:41:26" (1/1) ... [2022-11-18 20:41:26,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343271b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:26, skipping insertion in model container [2022-11-18 20:41:26,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:41:26" (1/1) ... [2022-11-18 20:41:26,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:41:26,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:41:27,208 WARN L234 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_cc0a9a90-0a20-4902-937c-ba6334ddcb07/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2022-11-18 20:41:27,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:41:27,220 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:41:27,260 WARN L234 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_cc0a9a90-0a20-4902-937c-ba6334ddcb07/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2022-11-18 20:41:27,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:41:27,279 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:41:27,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27 WrapperNode [2022-11-18 20:41:27,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:41:27,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:41:27,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:41:27,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:41:27,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,315 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2022-11-18 20:41:27,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:41:27,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:41:27,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:41:27,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:41:27,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:41:27,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:41:27,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:41:27,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:41:27,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (1/1) ... [2022-11-18 20:41:27,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:41:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:27,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:41:27,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:41:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:41:27,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:41:27,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:41:27,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:41:27,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:41:27,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:41:27,755 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:41:27,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:41:27,763 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:41:27,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:41:27 BoogieIcfgContainer [2022-11-18 20:41:27,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:41:27,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:41:27,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:41:27,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:41:27,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:41:27,773 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:41:26" (1/3) ... [2022-11-18 20:41:27,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ef03506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:41:27, skipping insertion in model container [2022-11-18 20:41:27,776 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:41:27,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:41:27" (2/3) ... [2022-11-18 20:41:27,777 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ef03506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:41:27, skipping insertion in model container [2022-11-18 20:41:27,777 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:41:27,777 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:41:27" (3/3) ... [2022-11-18 20:41:27,779 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_14-2.c [2022-11-18 20:41:27,892 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:41:27,906 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:41:27,907 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:41:27,907 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:41:27,907 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:41:27,907 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:41:27,908 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:41:27,908 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:41:27,913 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) [2022-11-18 20:41:27,957 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2022-11-18 20:41:27,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:27,958 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:27,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:27,981 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] [2022-11-18 20:41:27,981 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:41:27,981 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) [2022-11-18 20:41:27,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2022-11-18 20:41:27,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:27,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:27,989 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:27,996 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] [2022-11-18 20:41:28,005 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 [2022-11-18 20:41:28,008 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 [2022-11-18 20:41:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 20:41:28,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203959598] [2022-11-18 20:41:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:28,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1237702727, now seen corresponding path program 1 times [2022-11-18 20:41:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266387133] [2022-11-18 20:41:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:28,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:28,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:28,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266387133] [2022-11-18 20:41:28,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266387133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:28,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:28,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:28,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41237913] [2022-11-18 20:41:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:28,455 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:28,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:28,497 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) [2022-11-18 20:41:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:28,540 INFO L93 Difference]: Finished difference Result 99 states and 178 transitions. [2022-11-18 20:41:28,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 178 transitions. [2022-11-18 20:41:28,546 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2022-11-18 20:41:28,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 139 transitions. [2022-11-18 20:41:28,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2022-11-18 20:41:28,577 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2022-11-18 20:41:28,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 139 transitions. [2022-11-18 20:41:28,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:28,579 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-18 20:41:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 139 transitions. [2022-11-18 20:41:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-18 20:41:28,635 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) [2022-11-18 20:41:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2022-11-18 20:41:28,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-18 20:41:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:28,645 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2022-11-18 20:41:28,645 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 20:41:28,645 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 139 transitions. [2022-11-18 20:41:28,648 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2022-11-18 20:41:28,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:28,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:28,649 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:28,649 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] [2022-11-18 20:41:28,649 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 [2022-11-18 20:41:28,649 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 [2022-11-18 20:41:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-18 20:41:28,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713492382] [2022-11-18 20:41:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1215070473, now seen corresponding path program 1 times [2022-11-18 20:41:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076587452] [2022-11-18 20:41:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:28,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:28,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:28,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076587452] [2022-11-18 20:41:28,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076587452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:28,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:28,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:28,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964789944] [2022-11-18 20:41:28,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:28,761 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:28,763 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) [2022-11-18 20:41:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:28,792 INFO L93 Difference]: Finished difference Result 174 states and 270 transitions. [2022-11-18 20:41:28,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 270 transitions. [2022-11-18 20:41:28,796 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2022-11-18 20:41:28,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 270 transitions. [2022-11-18 20:41:28,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2022-11-18 20:41:28,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2022-11-18 20:41:28,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 270 transitions. [2022-11-18 20:41:28,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:28,802 INFO L218 hiAutomatonCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-18 20:41:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 270 transitions. [2022-11-18 20:41:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-18 20:41:28,815 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) [2022-11-18 20:41:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2022-11-18 20:41:28,819 INFO L240 hiAutomatonCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-18 20:41:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:28,820 INFO L428 stractBuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2022-11-18 20:41:28,821 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 20:41:28,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 270 transitions. [2022-11-18 20:41:28,824 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2022-11-18 20:41:28,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:28,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:28,825 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:28,825 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] [2022-11-18 20:41:28,826 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 [2022-11-18 20:41:28,826 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 [2022-11-18 20:41:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-18 20:41:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753181363] [2022-11-18 20:41:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:28,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 708157561, now seen corresponding path program 1 times [2022-11-18 20:41:28,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958129110] [2022-11-18 20:41:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:28,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:28,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958129110] [2022-11-18 20:41:28,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958129110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:28,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:28,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:28,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652326776] [2022-11-18 20:41:28,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:28,928 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:28,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:28,930 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) [2022-11-18 20:41:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:28,960 INFO L93 Difference]: Finished difference Result 342 states and 526 transitions. [2022-11-18 20:41:28,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 526 transitions. [2022-11-18 20:41:28,965 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2022-11-18 20:41:28,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 526 transitions. [2022-11-18 20:41:28,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2022-11-18 20:41:28,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2022-11-18 20:41:28,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 526 transitions. [2022-11-18 20:41:28,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:28,973 INFO L218 hiAutomatonCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-18 20:41:28,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 526 transitions. [2022-11-18 20:41:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2022-11-18 20:41:28,990 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) [2022-11-18 20:41:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 526 transitions. [2022-11-18 20:41:28,995 INFO L240 hiAutomatonCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-18 20:41:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:28,997 INFO L428 stractBuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2022-11-18 20:41:28,997 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 20:41:28,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 526 transitions. [2022-11-18 20:41:29,002 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2022-11-18 20:41:29,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:29,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:29,003 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:29,004 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] [2022-11-18 20:41:29,004 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 [2022-11-18 20:41:29,004 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 [2022-11-18 20:41:29,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,005 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-11-18 20:41:29,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518237885] [2022-11-18 20:41:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 770197175, now seen corresponding path program 1 times [2022-11-18 20:41:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896419020] [2022-11-18 20:41:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:29,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:29,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:29,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896419020] [2022-11-18 20:41:29,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896419020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:29,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:29,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:29,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279380943] [2022-11-18 20:41:29,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:29,083 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:29,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:29,084 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) [2022-11-18 20:41:29,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:29,113 INFO L93 Difference]: Finished difference Result 674 states and 1026 transitions. [2022-11-18 20:41:29,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1026 transitions. [2022-11-18 20:41:29,121 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2022-11-18 20:41:29,127 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1026 transitions. [2022-11-18 20:41:29,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2022-11-18 20:41:29,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2022-11-18 20:41:29,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1026 transitions. [2022-11-18 20:41:29,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:29,133 INFO L218 hiAutomatonCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-18 20:41:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1026 transitions. [2022-11-18 20:41:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2022-11-18 20:41:29,159 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) [2022-11-18 20:41:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1026 transitions. [2022-11-18 20:41:29,165 INFO L240 hiAutomatonCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-18 20:41:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:29,166 INFO L428 stractBuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2022-11-18 20:41:29,167 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 20:41:29,167 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1026 transitions. [2022-11-18 20:41:29,171 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2022-11-18 20:41:29,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:29,172 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:29,172 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:29,173 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] [2022-11-18 20:41:29,173 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 [2022-11-18 20:41:29,173 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 [2022-11-18 20:41:29,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,174 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2022-11-18 20:41:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935252566] [2022-11-18 20:41:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,189 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,191 INFO L85 PathProgramCache]: Analyzing trace with hash 910745785, now seen corresponding path program 1 times [2022-11-18 20:41:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022604795] [2022-11-18 20:41:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:29,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022604795] [2022-11-18 20:41:29,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022604795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:29,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:29,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846987588] [2022-11-18 20:41:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:29,244 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:29,246 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) [2022-11-18 20:41:29,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:29,282 INFO L93 Difference]: Finished difference Result 1330 states and 2002 transitions. [2022-11-18 20:41:29,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2002 transitions. [2022-11-18 20:41:29,298 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2022-11-18 20:41:29,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2002 transitions. [2022-11-18 20:41:29,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2022-11-18 20:41:29,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2022-11-18 20:41:29,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2002 transitions. [2022-11-18 20:41:29,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:29,335 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-18 20:41:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2002 transitions. [2022-11-18 20:41:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2022-11-18 20:41:29,375 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) [2022-11-18 20:41:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2002 transitions. [2022-11-18 20:41:29,382 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-18 20:41:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:29,384 INFO L428 stractBuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2022-11-18 20:41:29,384 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 20:41:29,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2002 transitions. [2022-11-18 20:41:29,393 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2022-11-18 20:41:29,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:29,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:29,395 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:29,395 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] [2022-11-18 20:41:29,395 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 [2022-11-18 20:41:29,396 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 [2022-11-18 20:41:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2022-11-18 20:41:29,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144011111] [2022-11-18 20:41:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 776732279, now seen corresponding path program 1 times [2022-11-18 20:41:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405439720] [2022-11-18 20:41:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:29,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:29,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:29,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405439720] [2022-11-18 20:41:29,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405439720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:29,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:29,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:29,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554931909] [2022-11-18 20:41:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:29,507 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:29,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:29,509 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) [2022-11-18 20:41:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:29,561 INFO L93 Difference]: Finished difference Result 2626 states and 3906 transitions. [2022-11-18 20:41:29,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 3906 transitions. [2022-11-18 20:41:29,612 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2022-11-18 20:41:29,632 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 3906 transitions. [2022-11-18 20:41:29,632 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2022-11-18 20:41:29,635 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2022-11-18 20:41:29,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 3906 transitions. [2022-11-18 20:41:29,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:29,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-18 20:41:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 3906 transitions. [2022-11-18 20:41:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2022-11-18 20:41:29,695 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) [2022-11-18 20:41:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3906 transitions. [2022-11-18 20:41:29,706 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-18 20:41:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:29,710 INFO L428 stractBuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2022-11-18 20:41:29,713 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-18 20:41:29,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 3906 transitions. [2022-11-18 20:41:29,735 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2022-11-18 20:41:29,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:29,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:29,741 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:29,743 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] [2022-11-18 20:41:29,743 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 [2022-11-18 20:41:29,744 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 [2022-11-18 20:41:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2022-11-18 20:41:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286650017] [2022-11-18 20:41:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:29,789 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1028706055, now seen corresponding path program 1 times [2022-11-18 20:41:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:29,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266561497] [2022-11-18 20:41:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266561497] [2022-11-18 20:41:29,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266561497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:29,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:29,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791242265] [2022-11-18 20:41:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:29,858 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:29,860 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) [2022-11-18 20:41:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:29,903 INFO L93 Difference]: Finished difference Result 5186 states and 7618 transitions. [2022-11-18 20:41:29,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7618 transitions. [2022-11-18 20:41:29,947 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2022-11-18 20:41:29,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7618 transitions. [2022-11-18 20:41:29,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2022-11-18 20:41:29,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2022-11-18 20:41:29,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7618 transitions. [2022-11-18 20:41:29,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:29,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-18 20:41:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7618 transitions. [2022-11-18 20:41:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2022-11-18 20:41:30,161 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) [2022-11-18 20:41:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7618 transitions. [2022-11-18 20:41:30,184 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-18 20:41:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:30,189 INFO L428 stractBuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2022-11-18 20:41:30,190 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-18 20:41:30,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7618 transitions. [2022-11-18 20:41:30,231 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2022-11-18 20:41:30,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:30,232 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:30,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:30,234 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] [2022-11-18 20:41:30,234 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 [2022-11-18 20:41:30,235 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 [2022-11-18 20:41:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2022-11-18 20:41:30,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:30,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8789151] [2022-11-18 20:41:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:30,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:30,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:30,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash -809851337, now seen corresponding path program 1 times [2022-11-18 20:41:30,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:30,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329845898] [2022-11-18 20:41:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:30,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:30,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:30,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329845898] [2022-11-18 20:41:30,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329845898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:30,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:30,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:30,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840399205] [2022-11-18 20:41:30,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:30,355 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:30,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:30,359 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) [2022-11-18 20:41:30,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:30,438 INFO L93 Difference]: Finished difference Result 10242 states and 14850 transitions. [2022-11-18 20:41:30,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 14850 transitions. [2022-11-18 20:41:30,532 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2022-11-18 20:41:30,726 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 14850 transitions. [2022-11-18 20:41:30,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2022-11-18 20:41:30,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2022-11-18 20:41:30,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 14850 transitions. [2022-11-18 20:41:30,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:30,755 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-18 20:41:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 14850 transitions. [2022-11-18 20:41:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2022-11-18 20:41:30,999 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) [2022-11-18 20:41:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 14850 transitions. [2022-11-18 20:41:31,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-18 20:41:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:31,106 INFO L428 stractBuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2022-11-18 20:41:31,106 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-18 20:41:31,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 14850 transitions. [2022-11-18 20:41:31,199 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2022-11-18 20:41:31,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:31,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:31,216 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:31,216 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] [2022-11-18 20:41:31,216 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 [2022-11-18 20:41:31,218 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 [2022-11-18 20:41:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:31,219 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2022-11-18 20:41:31,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395525707] [2022-11-18 20:41:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:31,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:31,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -387149511, now seen corresponding path program 1 times [2022-11-18 20:41:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:31,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531380804] [2022-11-18 20:41:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:31,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:31,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531380804] [2022-11-18 20:41:31,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531380804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:31,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:31,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:31,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773355891] [2022-11-18 20:41:31,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:31,395 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:31,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:31,396 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) [2022-11-18 20:41:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:31,541 INFO L93 Difference]: Finished difference Result 20226 states and 28930 transitions. [2022-11-18 20:41:31,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 28930 transitions. [2022-11-18 20:41:31,704 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2022-11-18 20:41:31,903 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 28930 transitions. [2022-11-18 20:41:31,903 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2022-11-18 20:41:31,920 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2022-11-18 20:41:31,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 28930 transitions. [2022-11-18 20:41:31,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:31,946 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-18 20:41:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 28930 transitions. [2022-11-18 20:41:32,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2022-11-18 20:41:32,408 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) [2022-11-18 20:41:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 28930 transitions. [2022-11-18 20:41:32,488 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-18 20:41:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:32,490 INFO L428 stractBuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2022-11-18 20:41:32,491 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-18 20:41:32,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 28930 transitions. [2022-11-18 20:41:32,590 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2022-11-18 20:41:32,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:32,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:32,591 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:32,591 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] [2022-11-18 20:41:32,592 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 [2022-11-18 20:41:32,592 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 [2022-11-18 20:41:32,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:32,593 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2022-11-18 20:41:32,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:32,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325098065] [2022-11-18 20:41:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:32,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:32,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2076093253, now seen corresponding path program 1 times [2022-11-18 20:41:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570831550] [2022-11-18 20:41:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:32,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:32,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570831550] [2022-11-18 20:41:32,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570831550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:32,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:32,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:41:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119097627] [2022-11-18 20:41:32,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:32,669 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 20:41:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:41:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:41:32,679 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) [2022-11-18 20:41:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:33,053 INFO L93 Difference]: Finished difference Result 39938 states and 56322 transitions. [2022-11-18 20:41:33,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 56322 transitions. [2022-11-18 20:41:33,291 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2022-11-18 20:41:33,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 56322 transitions. [2022-11-18 20:41:33,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2022-11-18 20:41:33,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2022-11-18 20:41:33,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 56322 transitions. [2022-11-18 20:41:33,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:41:33,720 INFO L218 hiAutomatonCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-18 20:41:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 56322 transitions. [2022-11-18 20:41:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2022-11-18 20:41:34,611 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) [2022-11-18 20:41:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 56322 transitions. [2022-11-18 20:41:34,759 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-18 20:41:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:41:34,761 INFO L428 stractBuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2022-11-18 20:41:34,761 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-18 20:41:34,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 56322 transitions. [2022-11-18 20:41:35,146 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2022-11-18 20:41:35,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:41:35,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:41:35,147 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 20:41:35,147 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] [2022-11-18 20:41:35,148 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 [2022-11-18 20:41:35,148 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 [2022-11-18 20:41:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2022-11-18 20:41:35,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:35,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657851402] [2022-11-18 20:41:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:35,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,154 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 224729337, now seen corresponding path program 1 times [2022-11-18 20:41:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:35,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561647583] [2022-11-18 20:41:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:35,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:35,184 INFO L85 PathProgramCache]: Analyzing trace with hash -233466693, now seen corresponding path program 1 times [2022-11-18 20:41:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:35,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575950760] [2022-11-18 20:41:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:35,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:35,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:41:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:36,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:41:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:41:36,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:41:36 BoogieIcfgContainer [2022-11-18 20:41:36,125 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:41:36,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:41:36,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:41:36,127 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:41:36,127 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:41:27" (3/4) ... [2022-11-18 20:41:36,130 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 20:41:36,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:41:36,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:41:36,187 INFO L158 Benchmark]: Toolchain (without parser) took 9241.22ms. Allocated memory was 98.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 56.7MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 351.8MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,187 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:41:36,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.22ms. Allocated memory is still 98.6MB. Free memory was 56.6MB in the beginning and 72.4MB in the end (delta: -15.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.75ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,189 INFO L158 Benchmark]: Boogie Preprocessor took 41.92ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:41:36,189 INFO L158 Benchmark]: RCFGBuilder took 406.42ms. Allocated memory is still 98.6MB. Free memory was 69.1MB in the beginning and 54.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,190 INFO L158 Benchmark]: BuchiAutomizer took 8358.92ms. Allocated memory was 98.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 54.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 347.7MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,190 INFO L158 Benchmark]: Witness Printer took 59.75ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:41:36,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.22ms. Allocated memory is still 98.6MB. Free memory was 56.6MB in the beginning and 72.4MB in the end (delta: -15.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.75ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.92ms. Allocated memory is still 98.6MB. Free memory was 70.8MB in the beginning and 69.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 406.42ms. Allocated memory is still 98.6MB. Free memory was 69.1MB in the beginning and 54.9MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 8358.92ms. Allocated memory was 98.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 54.9MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 347.7MB. Max. memory is 16.1GB. * Witness Printer took 59.75ms. Allocated memory is still 1.8GB. Free memory was 1.4GB in the beginning and 1.4GB 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 8.2s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 2.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 1.4s Buchi closure took 0.1s. 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! [2022-11-18 20:41:36,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc0a9a90-0a20-4902-937c-ba6334ddcb07/bin/uautomizer-TMbwUNV5ro/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)