./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_9.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP --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 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:18:30,948 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:18:31,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:18:31,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:18:31,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:18:31,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:18:31,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:18:31,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:18:31,079 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:18:31,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:18:31,080 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:18:31,081 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:18:31,082 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:18:31,083 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:18:31,083 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:18:31,084 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:18:31,085 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:18:31,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:18:31,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:18:31,087 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:18:31,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:18:31,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:18:31,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:18:31,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:18:31,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:18:31,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:18:31,092 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:18:31,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:18:31,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:18:31,094 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:18:31,095 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:18:31,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:18:31,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:18:31,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:18:31,097 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:18:31,098 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:18:31,098 INFO L153 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_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04dc39fb366d4472036345a213cca0ee8b355c41bc9af7e685ecaa2d36ed9484 [2023-11-06 22:18:31,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:18:31,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:18:31,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:18:31,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:18:31,521 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:18:31,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/locks/test_locks_9.c [2023-11-06 22:18:35,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:18:35,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:18:35,479 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/sv-benchmarks/c/locks/test_locks_9.c [2023-11-06 22:18:35,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/data/bee113b54/cca8cfdfc15c47438342f477df9056d5/FLAG6e36859dd [2023-11-06 22:18:35,514 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/data/bee113b54/cca8cfdfc15c47438342f477df9056d5 [2023-11-06 22:18:35,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:18:35,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:18:35,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:35,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:18:35,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:18:35,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f79583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35, skipping insertion in model container [2023-11-06 22:18:35,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,567 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:18:35,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:35,842 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:18:35,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:18:35,905 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:18:35,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35 WrapperNode [2023-11-06 22:18:35,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:18:35,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:35,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:18:35,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:18:35,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,964 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 127 [2023-11-06 22:18:35,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:18:35,968 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:18:35,968 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:18:35,968 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:18:35,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:35,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,032 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:18:36,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:18:36,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:18:36,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:18:36,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (1/1) ... [2023-11-06 22:18:36,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:18:36,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:18:36,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:18:36,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:18:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:18:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:18:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:18:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:18:36,256 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:18:36,260 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:18:36,558 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:18:36,565 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:18:36,566 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:18:36,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:36 BoogieIcfgContainer [2023-11-06 22:18:36,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:18:36,569 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:18:36,569 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:18:36,573 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:18:36,574 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:18:36,574 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:18:35" (1/3) ... [2023-11-06 22:18:36,575 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df49291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:18:36, skipping insertion in model container [2023-11-06 22:18:36,575 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:18:36,576 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:18:35" (2/3) ... [2023-11-06 22:18:36,576 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2df49291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:18:36, skipping insertion in model container [2023-11-06 22:18:36,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:18:36,576 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:36" (3/3) ... [2023-11-06 22:18:36,578 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_9.c [2023-11-06 22:18:36,649 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:18:36,650 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:18:36,650 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:18:36,650 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:18:36,650 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:18:36,650 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:18:36,651 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:18:36,651 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:18:36,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,693 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2023-11-06 22:18:36,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:36,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:36,701 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:36,702 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] [2023-11-06 22:18:36,702 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:18:36,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:36,707 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2023-11-06 22:18:36,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:36,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:36,708 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:36,708 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] [2023-11-06 22:18:36,739 INFO L748 eck$LassoCheckResult]: Stem: 32#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 12#L141-1true [2023-11-06 22:18:36,741 INFO L750 eck$LassoCheckResult]: Loop: 12#L141-1true assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 36#L40true 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; 3#L63true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 19#L63-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 27#L67-1true assume !(0 != main_~p3~0#1); 23#L71-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 29#L75-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 14#L79-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 37#L83-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 8#L87-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4#L91-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 34#L95-1true assume !(0 != main_~p1~0#1); 21#L101-1true assume !(0 != main_~p2~0#1); 9#L106-1true assume !(0 != main_~p3~0#1); 10#L111-1true assume !(0 != main_~p4~0#1); 33#L116-1true assume !(0 != main_~p5~0#1); 5#L121-1true assume !(0 != main_~p6~0#1); 17#L126-1true assume !(0 != main_~p7~0#1); 30#L131-1true assume !(0 != main_~p8~0#1); 18#L136-1true assume !(0 != main_~p9~0#1); 12#L141-1true [2023-11-06 22:18:36,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:18:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129990722] [2023-11-06 22:18:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:36,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:36,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:36,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 694706197, now seen corresponding path program 1 times [2023-11-06 22:18:36,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:36,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032244661] [2023-11-06 22:18:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:36,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032244661] [2023-11-06 22:18:37,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032244661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:37,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:37,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:37,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333420281] [2023-11-06 22:18:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,066 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:37,109 INFO L87 Difference]: Start difference. First operand has 37 states, 36 states have (on average 1.8333333333333333) internal successors, (66), 36 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:37,157 INFO L93 Difference]: Finished difference Result 67 states and 117 transitions. [2023-11-06 22:18:37,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 67 states and 117 transitions. [2023-11-06 22:18:37,164 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2023-11-06 22:18:37,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 67 states to 59 states and 93 transitions. [2023-11-06 22:18:37,172 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2023-11-06 22:18:37,173 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2023-11-06 22:18:37,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 93 transitions. [2023-11-06 22:18:37,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:37,175 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-11-06 22:18:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 93 transitions. [2023-11-06 22:18:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-06 22:18:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 59 states have (on average 1.576271186440678) internal successors, (93), 58 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 93 transitions. [2023-11-06 22:18:37,213 INFO L240 hiAutomatonCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-11-06 22:18:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:37,222 INFO L428 stractBuchiCegarLoop]: Abstraction has 59 states and 93 transitions. [2023-11-06 22:18:37,223 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:18:37,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 59 states and 93 transitions. [2023-11-06 22:18:37,226 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 57 [2023-11-06 22:18:37,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:37,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:37,227 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:37,227 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] [2023-11-06 22:18:37,227 INFO L748 eck$LassoCheckResult]: Stem: 147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 123#L141-1 [2023-11-06 22:18:37,228 INFO L750 eck$LassoCheckResult]: Loop: 123#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 130#L40 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; 149#L63 assume !(0 != main_~p1~0#1); 138#L63-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 139#L67-1 assume !(0 != main_~p3~0#1); 144#L71-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 145#L75-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 131#L79-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 132#L83-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 124#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 115#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 116#L95-1 assume !(0 != main_~p1~0#1); 140#L101-1 assume !(0 != main_~p2~0#1); 125#L106-1 assume !(0 != main_~p3~0#1); 126#L111-1 assume !(0 != main_~p4~0#1); 121#L116-1 assume !(0 != main_~p5~0#1); 117#L121-1 assume !(0 != main_~p6~0#1); 119#L126-1 assume !(0 != main_~p7~0#1); 134#L131-1 assume !(0 != main_~p8~0#1); 136#L136-1 assume !(0 != main_~p9~0#1); 123#L141-1 [2023-11-06 22:18:37,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 22:18:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493749850] [2023-11-06 22:18:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,241 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:37,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1299438509, now seen corresponding path program 1 times [2023-11-06 22:18:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014126385] [2023-11-06 22:18:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:37,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014126385] [2023-11-06 22:18:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014126385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:37,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:37,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:37,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527436321] [2023-11-06 22:18:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,316 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:37,318 INFO L87 Difference]: Start difference. First operand 59 states and 93 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:37,345 INFO L93 Difference]: Finished difference Result 114 states and 178 transitions. [2023-11-06 22:18:37,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 114 states and 178 transitions. [2023-11-06 22:18:37,350 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 112 [2023-11-06 22:18:37,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 114 states to 114 states and 178 transitions. [2023-11-06 22:18:37,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114 [2023-11-06 22:18:37,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114 [2023-11-06 22:18:37,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 178 transitions. [2023-11-06 22:18:37,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:37,357 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 178 transitions. [2023-11-06 22:18:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 178 transitions. [2023-11-06 22:18:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-06 22:18:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.5614035087719298) internal successors, (178), 113 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 178 transitions. [2023-11-06 22:18:37,373 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 178 transitions. [2023-11-06 22:18:37,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:37,375 INFO L428 stractBuchiCegarLoop]: Abstraction has 114 states and 178 transitions. [2023-11-06 22:18:37,375 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:18:37,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 178 transitions. [2023-11-06 22:18:37,378 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 112 [2023-11-06 22:18:37,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:37,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:37,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:37,380 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] [2023-11-06 22:18:37,380 INFO L748 eck$LassoCheckResult]: Stem: 325#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 302#L141-1 [2023-11-06 22:18:37,380 INFO L750 eck$LassoCheckResult]: Loop: 302#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 336#L40 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; 333#L63 assume !(0 != main_~p1~0#1); 334#L63-2 assume !(0 != main_~p2~0#1); 376#L67-1 assume !(0 != main_~p3~0#1); 375#L71-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 374#L75-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 373#L79-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 372#L83-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 371#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 370#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 369#L95-1 assume !(0 != main_~p1~0#1); 367#L101-1 assume !(0 != main_~p2~0#1); 365#L106-1 assume !(0 != main_~p3~0#1); 360#L111-1 assume !(0 != main_~p4~0#1); 357#L116-1 assume !(0 != main_~p5~0#1); 353#L121-1 assume !(0 != main_~p6~0#1); 349#L126-1 assume !(0 != main_~p7~0#1); 345#L131-1 assume !(0 != main_~p8~0#1); 341#L136-1 assume !(0 != main_~p9~0#1); 302#L141-1 [2023-11-06 22:18:37,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-06 22:18:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745596393] [2023-11-06 22:18:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:37,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1407180885, now seen corresponding path program 1 times [2023-11-06 22:18:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169255996] [2023-11-06 22:18:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:37,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169255996] [2023-11-06 22:18:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169255996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:37,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:37,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259317093] [2023-11-06 22:18:37,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,457 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:37,458 INFO L87 Difference]: Start difference. First operand 114 states and 178 transitions. cyclomatic complexity: 68 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:37,483 INFO L93 Difference]: Finished difference Result 222 states and 342 transitions. [2023-11-06 22:18:37,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 222 states and 342 transitions. [2023-11-06 22:18:37,489 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 220 [2023-11-06 22:18:37,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 222 states to 222 states and 342 transitions. [2023-11-06 22:18:37,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 222 [2023-11-06 22:18:37,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2023-11-06 22:18:37,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 222 states and 342 transitions. [2023-11-06 22:18:37,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:37,496 INFO L218 hiAutomatonCegarLoop]: Abstraction has 222 states and 342 transitions. [2023-11-06 22:18:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states and 342 transitions. [2023-11-06 22:18:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-11-06 22:18:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 222 states have (on average 1.5405405405405406) internal successors, (342), 221 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 342 transitions. [2023-11-06 22:18:37,521 INFO L240 hiAutomatonCegarLoop]: Abstraction has 222 states and 342 transitions. [2023-11-06 22:18:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:37,522 INFO L428 stractBuchiCegarLoop]: Abstraction has 222 states and 342 transitions. [2023-11-06 22:18:37,522 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:18:37,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 222 states and 342 transitions. [2023-11-06 22:18:37,526 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 220 [2023-11-06 22:18:37,526 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:37,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:37,527 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:37,527 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] [2023-11-06 22:18:37,528 INFO L748 eck$LassoCheckResult]: Stem: 671#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 643#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 644#L141-1 [2023-11-06 22:18:37,528 INFO L750 eck$LassoCheckResult]: Loop: 644#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 709#L40 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; 706#L63 assume !(0 != main_~p1~0#1); 703#L63-2 assume !(0 != main_~p2~0#1); 700#L67-1 assume !(0 != main_~p3~0#1); 697#L71-1 assume !(0 != main_~p4~0#1); 695#L75-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 693#L79-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 691#L83-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 689#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 687#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 684#L95-1 assume !(0 != main_~p1~0#1); 685#L101-1 assume !(0 != main_~p2~0#1); 734#L106-1 assume !(0 != main_~p3~0#1); 729#L111-1 assume !(0 != main_~p4~0#1); 728#L116-1 assume !(0 != main_~p5~0#1); 724#L121-1 assume !(0 != main_~p6~0#1); 720#L126-1 assume !(0 != main_~p7~0#1); 716#L131-1 assume !(0 != main_~p8~0#1); 713#L136-1 assume !(0 != main_~p9~0#1); 644#L141-1 [2023-11-06 22:18:37,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-06 22:18:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797150852] [2023-11-06 22:18:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:37,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 127317207, now seen corresponding path program 1 times [2023-11-06 22:18:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552824983] [2023-11-06 22:18:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:37,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552824983] [2023-11-06 22:18:37,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552824983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:37,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:37,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:37,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216989377] [2023-11-06 22:18:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,625 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:37,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:37,626 INFO L87 Difference]: Start difference. First operand 222 states and 342 transitions. cyclomatic complexity: 128 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:37,686 INFO L93 Difference]: Finished difference Result 434 states and 658 transitions. [2023-11-06 22:18:37,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 434 states and 658 transitions. [2023-11-06 22:18:37,691 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 432 [2023-11-06 22:18:37,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 434 states to 434 states and 658 transitions. [2023-11-06 22:18:37,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 434 [2023-11-06 22:18:37,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 434 [2023-11-06 22:18:37,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 434 states and 658 transitions. [2023-11-06 22:18:37,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:37,709 INFO L218 hiAutomatonCegarLoop]: Abstraction has 434 states and 658 transitions. [2023-11-06 22:18:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states and 658 transitions. [2023-11-06 22:18:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2023-11-06 22:18:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 434 states have (on average 1.5161290322580645) internal successors, (658), 433 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 658 transitions. [2023-11-06 22:18:37,763 INFO L240 hiAutomatonCegarLoop]: Abstraction has 434 states and 658 transitions. [2023-11-06 22:18:37,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:37,770 INFO L428 stractBuchiCegarLoop]: Abstraction has 434 states and 658 transitions. [2023-11-06 22:18:37,770 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:18:37,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 434 states and 658 transitions. [2023-11-06 22:18:37,774 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 432 [2023-11-06 22:18:37,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:37,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:37,776 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:37,776 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] [2023-11-06 22:18:37,777 INFO L748 eck$LassoCheckResult]: Stem: 1333#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 1305#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 1306#L141-1 [2023-11-06 22:18:37,777 INFO L750 eck$LassoCheckResult]: Loop: 1306#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 1385#L40 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; 1382#L63 assume !(0 != main_~p1~0#1); 1378#L63-2 assume !(0 != main_~p2~0#1); 1375#L67-1 assume !(0 != main_~p3~0#1); 1372#L71-1 assume !(0 != main_~p4~0#1); 1366#L75-1 assume !(0 != main_~p5~0#1); 1367#L79-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1357#L83-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1358#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1350#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1351#L95-1 assume !(0 != main_~p1~0#1); 1414#L101-1 assume !(0 != main_~p2~0#1); 1411#L106-1 assume !(0 != main_~p3~0#1); 1406#L111-1 assume !(0 != main_~p4~0#1); 1404#L116-1 assume !(0 != main_~p5~0#1); 1402#L121-1 assume !(0 != main_~p6~0#1); 1398#L126-1 assume !(0 != main_~p7~0#1); 1394#L131-1 assume !(0 != main_~p8~0#1); 1390#L136-1 assume !(0 != main_~p9~0#1); 1306#L141-1 [2023-11-06 22:18:37,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-06 22:18:37,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224357119] [2023-11-06 22:18:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:37,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:37,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash -883800043, now seen corresponding path program 1 times [2023-11-06 22:18:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:37,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315170716] [2023-11-06 22:18:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315170716] [2023-11-06 22:18:37,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315170716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:37,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:37,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899732127] [2023-11-06 22:18:37,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:37,886 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:37,896 INFO L87 Difference]: Start difference. First operand 434 states and 658 transitions. cyclomatic complexity: 240 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:37,939 INFO L93 Difference]: Finished difference Result 850 states and 1266 transitions. [2023-11-06 22:18:37,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 850 states and 1266 transitions. [2023-11-06 22:18:37,969 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 848 [2023-11-06 22:18:37,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 850 states to 850 states and 1266 transitions. [2023-11-06 22:18:37,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 850 [2023-11-06 22:18:37,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 850 [2023-11-06 22:18:37,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 850 states and 1266 transitions. [2023-11-06 22:18:37,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:37,985 INFO L218 hiAutomatonCegarLoop]: Abstraction has 850 states and 1266 transitions. [2023-11-06 22:18:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states and 1266 transitions. [2023-11-06 22:18:38,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2023-11-06 22:18:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 850 states have (on average 1.4894117647058824) internal successors, (1266), 849 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1266 transitions. [2023-11-06 22:18:38,023 INFO L240 hiAutomatonCegarLoop]: Abstraction has 850 states and 1266 transitions. [2023-11-06 22:18:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:38,025 INFO L428 stractBuchiCegarLoop]: Abstraction has 850 states and 1266 transitions. [2023-11-06 22:18:38,025 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:18:38,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 850 states and 1266 transitions. [2023-11-06 22:18:38,033 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 848 [2023-11-06 22:18:38,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:38,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:38,034 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:38,034 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] [2023-11-06 22:18:38,034 INFO L748 eck$LassoCheckResult]: Stem: 2624#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 2594#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 2595#L141-1 [2023-11-06 22:18:38,035 INFO L750 eck$LassoCheckResult]: Loop: 2595#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 2777#L40 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; 2774#L63 assume !(0 != main_~p1~0#1); 2775#L63-2 assume !(0 != main_~p2~0#1); 2761#L67-1 assume !(0 != main_~p3~0#1); 2762#L71-1 assume !(0 != main_~p4~0#1); 2744#L75-1 assume !(0 != main_~p5~0#1); 2746#L79-1 assume !(0 != main_~p6~0#1); 2731#L83-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2732#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2716#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2717#L95-1 assume !(0 != main_~p1~0#1); 2800#L101-1 assume !(0 != main_~p2~0#1); 2799#L106-1 assume !(0 != main_~p3~0#1); 2796#L111-1 assume !(0 != main_~p4~0#1); 2794#L116-1 assume !(0 != main_~p5~0#1); 2792#L121-1 assume !(0 != main_~p6~0#1); 2789#L126-1 assume !(0 != main_~p7~0#1); 2785#L131-1 assume !(0 != main_~p8~0#1); 2781#L136-1 assume !(0 != main_~p9~0#1); 2595#L141-1 [2023-11-06 22:18:38,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-06 22:18:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736839275] [2023-11-06 22:18:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,044 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:38,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1470606057, now seen corresponding path program 1 times [2023-11-06 22:18:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680202632] [2023-11-06 22:18:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:38,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680202632] [2023-11-06 22:18:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680202632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:38,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913074369] [2023-11-06 22:18:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:38,094 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:38,096 INFO L87 Difference]: Start difference. First operand 850 states and 1266 transitions. cyclomatic complexity: 448 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:38,126 INFO L93 Difference]: Finished difference Result 1666 states and 2434 transitions. [2023-11-06 22:18:38,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1666 states and 2434 transitions. [2023-11-06 22:18:38,154 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1664 [2023-11-06 22:18:38,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1666 states to 1666 states and 2434 transitions. [2023-11-06 22:18:38,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1666 [2023-11-06 22:18:38,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1666 [2023-11-06 22:18:38,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1666 states and 2434 transitions. [2023-11-06 22:18:38,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:38,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2023-11-06 22:18:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states and 2434 transitions. [2023-11-06 22:18:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1666. [2023-11-06 22:18:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1666 states have (on average 1.460984393757503) internal successors, (2434), 1665 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2434 transitions. [2023-11-06 22:18:38,244 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2023-11-06 22:18:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:38,247 INFO L428 stractBuchiCegarLoop]: Abstraction has 1666 states and 2434 transitions. [2023-11-06 22:18:38,247 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 22:18:38,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1666 states and 2434 transitions. [2023-11-06 22:18:38,261 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1664 [2023-11-06 22:18:38,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:38,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:38,263 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:38,263 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] [2023-11-06 22:18:38,263 INFO L748 eck$LassoCheckResult]: Stem: 5145#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 5116#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 5117#L141-1 [2023-11-06 22:18:38,264 INFO L750 eck$LassoCheckResult]: Loop: 5117#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 5462#L40 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; 5460#L63 assume !(0 != main_~p1~0#1); 5458#L63-2 assume !(0 != main_~p2~0#1); 5456#L67-1 assume !(0 != main_~p3~0#1); 5453#L71-1 assume !(0 != main_~p4~0#1); 5450#L75-1 assume !(0 != main_~p5~0#1); 5448#L79-1 assume !(0 != main_~p6~0#1); 5444#L83-1 assume !(0 != main_~p7~0#1); 5442#L87-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 5440#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 5438#L95-1 assume !(0 != main_~p1~0#1); 5432#L101-1 assume !(0 != main_~p2~0#1); 5433#L106-1 assume !(0 != main_~p3~0#1); 5418#L111-1 assume !(0 != main_~p4~0#1); 5419#L116-1 assume !(0 != main_~p5~0#1); 5469#L121-1 assume !(0 != main_~p6~0#1); 5467#L126-1 assume !(0 != main_~p7~0#1); 5466#L131-1 assume !(0 != main_~p8~0#1); 5464#L136-1 assume !(0 != main_~p9~0#1); 5117#L141-1 [2023-11-06 22:18:38,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-06 22:18:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93748581] [2023-11-06 22:18:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:38,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1212440619, now seen corresponding path program 1 times [2023-11-06 22:18:38,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028149952] [2023-11-06 22:18:38,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:38,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:38,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028149952] [2023-11-06 22:18:38,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028149952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:38,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:38,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:18:38,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530856042] [2023-11-06 22:18:38,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:38,334 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:38,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:38,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:38,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:38,335 INFO L87 Difference]: Start difference. First operand 1666 states and 2434 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:38,378 INFO L93 Difference]: Finished difference Result 3266 states and 4674 transitions. [2023-11-06 22:18:38,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3266 states and 4674 transitions. [2023-11-06 22:18:38,416 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3264 [2023-11-06 22:18:38,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3266 states to 3266 states and 4674 transitions. [2023-11-06 22:18:38,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3266 [2023-11-06 22:18:38,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3266 [2023-11-06 22:18:38,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3266 states and 4674 transitions. [2023-11-06 22:18:38,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:38,461 INFO L218 hiAutomatonCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2023-11-06 22:18:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states and 4674 transitions. [2023-11-06 22:18:38,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 3266. [2023-11-06 22:18:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3266 states have (on average 1.4311083894672383) internal successors, (4674), 3265 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 4674 transitions. [2023-11-06 22:18:38,552 INFO L240 hiAutomatonCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2023-11-06 22:18:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:38,554 INFO L428 stractBuchiCegarLoop]: Abstraction has 3266 states and 4674 transitions. [2023-11-06 22:18:38,554 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 22:18:38,554 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3266 states and 4674 transitions. [2023-11-06 22:18:38,577 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3264 [2023-11-06 22:18:38,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:38,577 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:38,578 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:38,578 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] [2023-11-06 22:18:38,578 INFO L748 eck$LassoCheckResult]: Stem: 10087#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 10054#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 10055#L141-1 [2023-11-06 22:18:38,578 INFO L750 eck$LassoCheckResult]: Loop: 10055#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 10201#L40 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; 10202#L63 assume !(0 != main_~p1~0#1); 10179#L63-2 assume !(0 != main_~p2~0#1); 10181#L67-1 assume !(0 != main_~p3~0#1); 10157#L71-1 assume !(0 != main_~p4~0#1); 10159#L75-1 assume !(0 != main_~p5~0#1); 10140#L79-1 assume !(0 != main_~p6~0#1); 10142#L83-1 assume !(0 != main_~p7~0#1); 10264#L87-1 assume !(0 != main_~p8~0#1); 10263#L91-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 10261#L95-1 assume !(0 != main_~p1~0#1); 10257#L101-1 assume !(0 != main_~p2~0#1); 10254#L106-1 assume !(0 != main_~p3~0#1); 10249#L111-1 assume !(0 != main_~p4~0#1); 10245#L116-1 assume !(0 != main_~p5~0#1); 10241#L121-1 assume !(0 != main_~p6~0#1); 10238#L126-1 assume !(0 != main_~p7~0#1); 10239#L131-1 assume !(0 != main_~p8~0#1); 10218#L136-1 assume !(0 != main_~p9~0#1); 10055#L141-1 [2023-11-06 22:18:38,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-06 22:18:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364107488] [2023-11-06 22:18:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:38,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:38,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -511376041, now seen corresponding path program 1 times [2023-11-06 22:18:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:38,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994678859] [2023-11-06 22:18:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:18:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:18:38,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:18:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994678859] [2023-11-06 22:18:38,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994678859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:18:38,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:18:38,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:18:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659597346] [2023-11-06 22:18:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:18:38,625 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 22:18:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:18:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:18:38,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:18:38,626 INFO L87 Difference]: Start difference. First operand 3266 states and 4674 transitions. cyclomatic complexity: 1536 Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:18:38,686 INFO L93 Difference]: Finished difference Result 6402 states and 8962 transitions. [2023-11-06 22:18:38,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6402 states and 8962 transitions. [2023-11-06 22:18:38,806 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 6400 [2023-11-06 22:18:38,874 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6402 states to 6402 states and 8962 transitions. [2023-11-06 22:18:38,874 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6402 [2023-11-06 22:18:38,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6402 [2023-11-06 22:18:38,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6402 states and 8962 transitions. [2023-11-06 22:18:38,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:18:38,893 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2023-11-06 22:18:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states and 8962 transitions. [2023-11-06 22:18:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 6402. [2023-11-06 22:18:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6402 states, 6402 states have (on average 1.3998750390502968) internal successors, (8962), 6401 states have internal predecessors, (8962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:18:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6402 states to 6402 states and 8962 transitions. [2023-11-06 22:18:39,068 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2023-11-06 22:18:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:18:39,073 INFO L428 stractBuchiCegarLoop]: Abstraction has 6402 states and 8962 transitions. [2023-11-06 22:18:39,073 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-06 22:18:39,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6402 states and 8962 transitions. [2023-11-06 22:18:39,103 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 6400 [2023-11-06 22:18:39,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:18:39,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:18:39,105 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:18:39,105 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] [2023-11-06 22:18:39,106 INFO L748 eck$LassoCheckResult]: Stem: 19763#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 19728#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~cond~0#1;havoc main_#t~nondet4#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;havoc main_#t~nondet5#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;havoc main_#t~nondet6#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;havoc main_#t~nondet7#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;havoc main_#t~nondet8#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;havoc main_#t~nondet9#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_#t~nondet10#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;havoc main_#t~nondet11#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;havoc main_#t~nondet12#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;havoc main_~cond~0#1; 19729#L141-1 [2023-11-06 22:18:39,106 INFO L750 eck$LassoCheckResult]: Loop: 19729#L141-1 assume !false;havoc main_#t~nondet13#1;main_~cond~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1; 19928#L40 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; 19925#L63 assume !(0 != main_~p1~0#1); 19926#L63-2 assume !(0 != main_~p2~0#1); 19905#L67-1 assume !(0 != main_~p3~0#1); 19906#L71-1 assume !(0 != main_~p4~0#1); 19889#L75-1 assume !(0 != main_~p5~0#1); 19891#L79-1 assume !(0 != main_~p6~0#1); 19865#L83-1 assume !(0 != main_~p7~0#1); 19867#L87-1 assume !(0 != main_~p8~0#1); 19841#L91-1 assume !(0 != main_~p9~0#1); 19843#L95-1 assume !(0 != main_~p1~0#1); 19952#L101-1 assume !(0 != main_~p2~0#1); 19951#L106-1 assume !(0 != main_~p3~0#1); 19948#L111-1 assume !(0 != main_~p4~0#1); 19946#L116-1 assume !(0 != main_~p5~0#1); 19944#L121-1 assume !(0 != main_~p6~0#1); 19940#L126-1 assume !(0 != main_~p7~0#1); 19936#L131-1 assume !(0 != main_~p8~0#1); 19932#L136-1 assume !(0 != main_~p9~0#1); 19729#L141-1 [2023-11-06 22:18:39,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-06 22:18:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504839014] [2023-11-06 22:18:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:39,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash -904403051, now seen corresponding path program 1 times [2023-11-06 22:18:39,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069939407] [2023-11-06 22:18:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,153 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:39,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:18:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 551712343, now seen corresponding path program 1 times [2023-11-06 22:18:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:18:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534606907] [2023-11-06 22:18:39,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:18:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:18:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:18:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:18:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:18:39,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:18:39 BoogieIcfgContainer [2023-11-06 22:18:39,730 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:18:39,731 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:18:39,731 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:18:39,731 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:18:39,731 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:18:36" (3/4) ... [2023-11-06 22:18:39,733 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:18:39,790 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:18:39,790 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:18:39,791 INFO L158 Benchmark]: Toolchain (without parser) took 4272.04ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 110.4MB in the beginning and 124.1MB in the end (delta: -13.7MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,791 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory was 73.1MB in the beginning and 72.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:18:39,792 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.61ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 99.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.34ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,793 INFO L158 Benchmark]: Boogie Preprocessor took 64.40ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 96.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,793 INFO L158 Benchmark]: RCFGBuilder took 534.94ms. Allocated memory is still 155.2MB. Free memory was 96.1MB in the beginning and 84.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,793 INFO L158 Benchmark]: BuchiAutomizer took 3161.27ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 84.2MB in the beginning and 126.2MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:18:39,796 INFO L158 Benchmark]: Witness Printer took 59.70ms. Allocated memory is still 186.6MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:18:39,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 121.6MB. Free memory was 73.1MB in the beginning and 72.9MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.61ms. Allocated memory is still 155.2MB. Free memory was 110.0MB in the beginning and 99.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.34ms. Allocated memory is still 155.2MB. Free memory was 99.3MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.40ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 96.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.94ms. Allocated memory is still 155.2MB. Free memory was 96.1MB in the beginning and 84.2MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 3161.27ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 84.2MB in the beginning and 126.2MB in the end (delta: -42.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.70ms. Allocated memory is still 186.6MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 8 terminating modules (8 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.8 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 6402 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 9 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 0. Minimization of det autom 8. Minimization of nondet autom 0. Automata minimization 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 299 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 299 mSDsluCounter, 937 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 582 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI8 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: 38]: 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; [L36] int cond; Loop: [L38] COND TRUE 1 [L39] cond = __VERIFIER_nondet_int() [L40] COND FALSE !(cond == 0) [L43] lk1 = 0 [L45] lk2 = 0 [L47] lk3 = 0 [L49] lk4 = 0 [L51] lk5 = 0 [L53] lk6 = 0 [L55] lk7 = 0 [L57] lk8 = 0 [L59] lk9 = 0 [L63] COND FALSE !(p1 != 0) [L67] COND FALSE !(p2 != 0) [L71] COND FALSE !(p3 != 0) [L75] COND FALSE !(p4 != 0) [L79] COND FALSE !(p5 != 0) [L83] COND FALSE !(p6 != 0) [L87] COND FALSE !(p7 != 0) [L91] COND FALSE !(p8 != 0) [L95] COND FALSE !(p9 != 0) [L101] COND FALSE !(p1 != 0) [L106] COND FALSE !(p2 != 0) [L111] COND FALSE !(p3 != 0) [L116] COND FALSE !(p4 != 0) [L121] COND FALSE !(p5 != 0) [L126] COND FALSE !(p6 != 0) [L131] COND FALSE !(p7 != 0) [L136] COND FALSE !(p8 != 0) [L141] COND FALSE !(p9 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 38]: 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; [L36] int cond; Loop: [L38] COND TRUE 1 [L39] cond = __VERIFIER_nondet_int() [L40] COND FALSE !(cond == 0) [L43] lk1 = 0 [L45] lk2 = 0 [L47] lk3 = 0 [L49] lk4 = 0 [L51] lk5 = 0 [L53] lk6 = 0 [L55] lk7 = 0 [L57] lk8 = 0 [L59] lk9 = 0 [L63] COND FALSE !(p1 != 0) [L67] COND FALSE !(p2 != 0) [L71] COND FALSE !(p3 != 0) [L75] COND FALSE !(p4 != 0) [L79] COND FALSE !(p5 != 0) [L83] COND FALSE !(p6 != 0) [L87] COND FALSE !(p7 != 0) [L91] COND FALSE !(p8 != 0) [L95] COND FALSE !(p9 != 0) [L101] COND FALSE !(p1 != 0) [L106] COND FALSE !(p2 != 0) [L111] COND FALSE !(p3 != 0) [L116] COND FALSE !(p4 != 0) [L121] COND FALSE !(p5 != 0) [L126] COND FALSE !(p6 != 0) [L131] COND FALSE !(p7 != 0) [L136] COND FALSE !(p8 != 0) [L141] COND FALSE !(p9 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:18:39,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b427b6c8-54bb-48f0-bc71-f9550fb60f5c/bin/uautomizer-verify-WvqO1wxjHP/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)