./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 11a9c91fdf6b42598924d9a4ae5a3db9994a05118a3b564c2bd29b9bad4177b0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:41,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:41,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 21:00:41,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:41,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:41,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:41,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:41,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:41,536 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:41,541 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:41,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:41,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:41,543 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:41,545 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 21:00:41,546 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 21:00:41,546 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 21:00:41,546 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 21:00:41,547 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 21:00:41,548 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 21:00:41,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:41,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 21:00:41,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:00:41,550 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:41,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:00:41,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:41,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 21:00:41,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 21:00:41,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 21:00:41,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:41,552 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:00:41,554 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:41,554 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 21:00:41,554 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:41,555 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:41,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:41,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:41,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:41,556 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 21:00:41,556 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_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11a9c91fdf6b42598924d9a4ae5a3db9994a05118a3b564c2bd29b9bad4177b0 [2023-11-21 21:00:41,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:41,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:41,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:41,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:41,908 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:41,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/locks/test_locks_15-1.c [2023-11-21 21:00:45,073 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:45,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:45,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/sv-benchmarks/c/locks/test_locks_15-1.c [2023-11-21 21:00:45,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/data/744ef0d18/ef4ae34bf140418e9a13da4bcfb46546/FLAGfbd0d6e56 [2023-11-21 21:00:45,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/data/744ef0d18/ef4ae34bf140418e9a13da4bcfb46546 [2023-11-21 21:00:45,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:45,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:45,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:45,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:45,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:45,388 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cadaf32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45, skipping insertion in model container [2023-11-21 21:00:45,389 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:45,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:45,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:45,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:45,703 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:45,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45 WrapperNode [2023-11-21 21:00:45,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:45,706 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:45,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:45,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:45,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,748 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 195 [2023-11-21 21:00:45,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:45,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:45,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:45,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:45,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,765 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,776 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 21:00:45,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:45,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:45,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:45,795 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:45,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (1/1) ... [2023-11-21 21:00:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:45,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:00:45,966 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:45,968 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:46,258 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:46,269 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:46,269 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:00:46,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:46 BoogieIcfgContainer [2023-11-21 21:00:46,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:46,280 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 21:00:46,281 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 21:00:46,285 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 21:00:46,286 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:46,286 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 09:00:45" (1/3) ... [2023-11-21 21:00:46,287 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@724235c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:00:46, skipping insertion in model container [2023-11-21 21:00:46,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:46,288 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:45" (2/3) ... [2023-11-21 21:00:46,288 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@724235c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:00:46, skipping insertion in model container [2023-11-21 21:00:46,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:46,289 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:46" (3/3) ... [2023-11-21 21:00:46,290 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_15-1.c [2023-11-21 21:00:46,347 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 21:00:46,347 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 21:00:46,347 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 21:00:46,348 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 21:00:46,348 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 21:00:46,348 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 21:00:46,348 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 21:00:46,348 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 21:00:46,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:46,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-21 21:00:46,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:46,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:46,378 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:46,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:46,379 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 21:00:46,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:46,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-21 21:00:46,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:46,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:46,386 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:46,386 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:46,394 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 20#L225-1true [2023-11-21 21:00:46,396 INFO L750 eck$LassoCheckResult]: Loop: 20#L225-1true assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 32#L58true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 28#L93true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 26#L93-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 12#L97-1true assume !(0 != main_~p3~0#1); 15#L101-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 50#L105-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 43#L109-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 11#L113-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 22#L117-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 30#L121-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 16#L125-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 35#L129-1true assume !(0 != main_~p11~0#1); 3#L133-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 5#L137-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 38#L141-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 55#L145-1true assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 47#L149-1true assume !(0 != main_~p1~0#1); 45#L155-1true assume 0 != main_~p2~0#1; 7#L161true assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 18#L160true assume !(0 != main_~p3~0#1); 10#L165-1true assume !(0 != main_~p4~0#1); 41#L170-1true assume !(0 != main_~p5~0#1); 44#L175-1true assume !(0 != main_~p6~0#1); 17#L180-1true assume !(0 != main_~p7~0#1); 37#L185-1true assume !(0 != main_~p8~0#1); 24#L190-1true assume !(0 != main_~p9~0#1); 40#L195-1true assume !(0 != main_~p10~0#1); 14#L200-1true assume !(0 != main_~p11~0#1); 42#L205-1true assume !(0 != main_~p12~0#1); 23#L210-1true assume !(0 != main_~p13~0#1); 4#L215-1true assume 0 != main_~p14~0#1; 13#L221true assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 54#L220true assume !(0 != main_~p15~0#1); 20#L225-1true [2023-11-21 21:00:46,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 21:00:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342148987] [2023-11-21 21:00:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:46,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash -638858682, now seen corresponding path program 1 times [2023-11-21 21:00:46,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535973045] [2023-11-21 21:00:46,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:46,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:46,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535973045] [2023-11-21 21:00:46,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535973045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:46,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:46,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989820335] [2023-11-21 21:00:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:46,814 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:46,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:46,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:46,917 INFO L87 Difference]: Start difference. First operand has 55 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,001 INFO L93 Difference]: Finished difference Result 103 states and 189 transitions. [2023-11-21 21:00:47,002 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 189 transitions. [2023-11-21 21:00:47,008 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2023-11-21 21:00:47,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 95 states and 149 transitions. [2023-11-21 21:00:47,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-21 21:00:47,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2023-11-21 21:00:47,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 149 transitions. [2023-11-21 21:00:47,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:47,024 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 149 transitions. [2023-11-21 21:00:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 149 transitions. [2023-11-21 21:00:47,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-21 21:00:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.568421052631579) internal successors, (149), 94 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 149 transitions. [2023-11-21 21:00:47,080 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 149 transitions. [2023-11-21 21:00:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,090 INFO L428 stractBuchiCegarLoop]: Abstraction has 95 states and 149 transitions. [2023-11-21 21:00:47,090 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 21:00:47,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 149 transitions. [2023-11-21 21:00:47,102 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2023-11-21 21:00:47,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:47,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:47,104 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:47,104 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,105 INFO L748 eck$LassoCheckResult]: Stem: 203#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 204#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 212#L225-1 [2023-11-21 21:00:47,105 INFO L750 eck$LassoCheckResult]: Loop: 212#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 210#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 211#L93 assume !(0 != main_~p1~0#1); 205#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 184#L97-1 assume !(0 != main_~p3~0#1); 185#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 189#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 225#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 247#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 246#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 245#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 244#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 242#L129-1 assume !(0 != main_~p11~0#1); 239#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 236#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 216#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 217#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 226#L149-1 assume !(0 != main_~p1~0#1); 221#L155-1 assume 0 != main_~p2~0#1; 174#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 175#L160 assume !(0 != main_~p3~0#1); 178#L165-1 assume !(0 != main_~p4~0#1); 179#L170-1 assume !(0 != main_~p5~0#1); 215#L175-1 assume !(0 != main_~p6~0#1); 192#L180-1 assume !(0 != main_~p7~0#1); 193#L185-1 assume !(0 != main_~p8~0#1); 241#L190-1 assume !(0 != main_~p9~0#1); 238#L195-1 assume !(0 != main_~p10~0#1); 186#L200-1 assume !(0 != main_~p11~0#1); 187#L205-1 assume !(0 != main_~p12~0#1); 207#L210-1 assume !(0 != main_~p13~0#1); 231#L215-1 assume 0 != main_~p14~0#1; 230#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 229#L220 assume !(0 != main_~p15~0#1); 212#L225-1 [2023-11-21 21:00:47,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-21 21:00:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183710036] [2023-11-21 21:00:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:47,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash -364099068, now seen corresponding path program 1 times [2023-11-21 21:00:47,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089959668] [2023-11-21 21:00:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:47,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089959668] [2023-11-21 21:00:47,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089959668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:47,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:47,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374707309] [2023-11-21 21:00:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:47,258 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:47,260 INFO L87 Difference]: Start difference. First operand 95 states and 149 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,304 INFO L93 Difference]: Finished difference Result 186 states and 290 transitions. [2023-11-21 21:00:47,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 290 transitions. [2023-11-21 21:00:47,308 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2023-11-21 21:00:47,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 290 transitions. [2023-11-21 21:00:47,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2023-11-21 21:00:47,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2023-11-21 21:00:47,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 290 transitions. [2023-11-21 21:00:47,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:47,321 INFO L218 hiAutomatonCegarLoop]: Abstraction has 186 states and 290 transitions. [2023-11-21 21:00:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 290 transitions. [2023-11-21 21:00:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-11-21 21:00:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.5591397849462365) internal successors, (290), 185 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2023-11-21 21:00:47,341 INFO L240 hiAutomatonCegarLoop]: Abstraction has 186 states and 290 transitions. [2023-11-21 21:00:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,342 INFO L428 stractBuchiCegarLoop]: Abstraction has 186 states and 290 transitions. [2023-11-21 21:00:47,343 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 21:00:47,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 290 transitions. [2023-11-21 21:00:47,345 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2023-11-21 21:00:47,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:47,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:47,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:47,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,347 INFO L748 eck$LassoCheckResult]: Stem: 492#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 493#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 499#L225-1 [2023-11-21 21:00:47,347 INFO L750 eck$LassoCheckResult]: Loop: 499#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 528#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 525#L93 assume !(0 != main_~p1~0#1); 526#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 520#L97-1 assume !(0 != main_~p3~0#1); 521#L101-1 assume !(0 != main_~p4~0#1); 595#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 594#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 593#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 592#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 591#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 590#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 589#L129-1 assume !(0 != main_~p11~0#1); 588#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 587#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 586#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 585#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 584#L149-1 assume !(0 != main_~p1~0#1); 583#L155-1 assume 0 != main_~p2~0#1; 582#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 579#L160 assume !(0 != main_~p3~0#1); 575#L165-1 assume !(0 != main_~p4~0#1); 572#L170-1 assume !(0 != main_~p5~0#1); 569#L175-1 assume !(0 != main_~p6~0#1); 565#L180-1 assume !(0 != main_~p7~0#1); 560#L185-1 assume !(0 != main_~p8~0#1); 557#L190-1 assume !(0 != main_~p9~0#1); 553#L195-1 assume !(0 != main_~p10~0#1); 549#L200-1 assume !(0 != main_~p11~0#1); 545#L205-1 assume !(0 != main_~p12~0#1); 541#L210-1 assume !(0 != main_~p13~0#1); 537#L215-1 assume 0 != main_~p14~0#1; 535#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 533#L220 assume !(0 != main_~p15~0#1); 499#L225-1 [2023-11-21 21:00:47,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-21 21:00:47,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377850452] [2023-11-21 21:00:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:47,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1022104326, now seen corresponding path program 1 times [2023-11-21 21:00:47,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663691705] [2023-11-21 21:00:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663691705] [2023-11-21 21:00:47,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663691705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:47,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:47,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:47,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943589518] [2023-11-21 21:00:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:47,473 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:47,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:47,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:47,474 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. cyclomatic complexity: 108 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,499 INFO L93 Difference]: Finished difference Result 366 states and 566 transitions. [2023-11-21 21:00:47,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 566 transitions. [2023-11-21 21:00:47,503 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2023-11-21 21:00:47,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 566 transitions. [2023-11-21 21:00:47,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2023-11-21 21:00:47,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2023-11-21 21:00:47,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 566 transitions. [2023-11-21 21:00:47,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:47,510 INFO L218 hiAutomatonCegarLoop]: Abstraction has 366 states and 566 transitions. [2023-11-21 21:00:47,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 566 transitions. [2023-11-21 21:00:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2023-11-21 21:00:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.546448087431694) internal successors, (566), 365 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 566 transitions. [2023-11-21 21:00:47,533 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 566 transitions. [2023-11-21 21:00:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,537 INFO L428 stractBuchiCegarLoop]: Abstraction has 366 states and 566 transitions. [2023-11-21 21:00:47,537 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 21:00:47,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 566 transitions. [2023-11-21 21:00:47,540 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2023-11-21 21:00:47,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:47,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:47,541 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:47,541 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,541 INFO L748 eck$LassoCheckResult]: Stem: 1049#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1050#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1059#L225-1 [2023-11-21 21:00:47,542 INFO L750 eck$LassoCheckResult]: Loop: 1059#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1087#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1088#L93 assume !(0 != main_~p1~0#1); 1214#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 1232#L97-1 assume !(0 != main_~p3~0#1); 1229#L101-1 assume !(0 != main_~p4~0#1); 1226#L105-1 assume !(0 != main_~p5~0#1); 1224#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1223#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1221#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1219#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1217#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1215#L129-1 assume !(0 != main_~p11~0#1); 1212#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1209#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1206#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1202#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 1176#L149-1 assume !(0 != main_~p1~0#1); 1174#L155-1 assume 0 != main_~p2~0#1; 1171#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 1168#L160 assume !(0 != main_~p3~0#1); 1165#L165-1 assume !(0 != main_~p4~0#1); 1162#L170-1 assume !(0 != main_~p5~0#1); 1141#L175-1 assume !(0 != main_~p6~0#1); 1137#L180-1 assume !(0 != main_~p7~0#1); 1131#L185-1 assume !(0 != main_~p8~0#1); 1127#L190-1 assume !(0 != main_~p9~0#1); 1126#L195-1 assume !(0 != main_~p10~0#1); 1250#L200-1 assume !(0 != main_~p11~0#1); 1112#L205-1 assume !(0 != main_~p12~0#1); 1111#L210-1 assume !(0 != main_~p13~0#1); 1100#L215-1 assume 0 != main_~p14~0#1; 1101#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 1095#L220 assume !(0 != main_~p15~0#1); 1059#L225-1 [2023-11-21 21:00:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-21 21:00:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355914213] [2023-11-21 21:00:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:47,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 512631236, now seen corresponding path program 1 times [2023-11-21 21:00:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839912826] [2023-11-21 21:00:47,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:47,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839912826] [2023-11-21 21:00:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839912826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:47,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882425873] [2023-11-21 21:00:47,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:47,655 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:47,658 INFO L87 Difference]: Start difference. First operand 366 states and 566 transitions. cyclomatic complexity: 208 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,690 INFO L93 Difference]: Finished difference Result 722 states and 1106 transitions. [2023-11-21 21:00:47,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1106 transitions. [2023-11-21 21:00:47,699 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2023-11-21 21:00:47,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1106 transitions. [2023-11-21 21:00:47,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2023-11-21 21:00:47,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2023-11-21 21:00:47,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1106 transitions. [2023-11-21 21:00:47,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:47,717 INFO L218 hiAutomatonCegarLoop]: Abstraction has 722 states and 1106 transitions. [2023-11-21 21:00:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1106 transitions. [2023-11-21 21:00:47,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2023-11-21 21:00:47,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5318559556786704) internal successors, (1106), 721 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1106 transitions. [2023-11-21 21:00:47,760 INFO L240 hiAutomatonCegarLoop]: Abstraction has 722 states and 1106 transitions. [2023-11-21 21:00:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,762 INFO L428 stractBuchiCegarLoop]: Abstraction has 722 states and 1106 transitions. [2023-11-21 21:00:47,762 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 21:00:47,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1106 transitions. [2023-11-21 21:00:47,768 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2023-11-21 21:00:47,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:47,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:47,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:47,770 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,770 INFO L748 eck$LassoCheckResult]: Stem: 2143#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2144#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 2151#L225-1 [2023-11-21 21:00:47,770 INFO L750 eck$LassoCheckResult]: Loop: 2151#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 2350#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 2347#L93 assume !(0 != main_~p1~0#1); 2348#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 2337#L97-1 assume !(0 != main_~p3~0#1); 2338#L101-1 assume !(0 != main_~p4~0#1); 2325#L105-1 assume !(0 != main_~p5~0#1); 2327#L109-1 assume !(0 != main_~p6~0#1); 2313#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2314#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2301#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2302#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2289#L129-1 assume !(0 != main_~p11~0#1); 2290#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2277#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2278#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2265#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 2266#L149-1 assume !(0 != main_~p1~0#1); 2398#L155-1 assume 0 != main_~p2~0#1; 2397#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 2396#L160 assume !(0 != main_~p3~0#1); 2392#L165-1 assume !(0 != main_~p4~0#1); 2390#L170-1 assume !(0 != main_~p5~0#1); 2388#L175-1 assume !(0 != main_~p6~0#1); 2385#L180-1 assume !(0 != main_~p7~0#1); 2380#L185-1 assume !(0 != main_~p8~0#1); 2377#L190-1 assume !(0 != main_~p9~0#1); 2373#L195-1 assume !(0 != main_~p10~0#1); 2369#L200-1 assume !(0 != main_~p11~0#1); 2365#L205-1 assume !(0 != main_~p12~0#1); 2361#L210-1 assume !(0 != main_~p13~0#1); 2358#L215-1 assume 0 != main_~p14~0#1; 2356#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 2355#L220 assume !(0 != main_~p15~0#1); 2151#L225-1 [2023-11-21 21:00:47,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-21 21:00:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242240648] [2023-11-21 21:00:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:47,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1859108026, now seen corresponding path program 1 times [2023-11-21 21:00:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527352548] [2023-11-21 21:00:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527352548] [2023-11-21 21:00:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527352548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:47,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:47,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:47,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929319622] [2023-11-21 21:00:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:47,859 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:47,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:47,861 INFO L87 Difference]: Start difference. First operand 722 states and 1106 transitions. cyclomatic complexity: 400 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,891 INFO L93 Difference]: Finished difference Result 1426 states and 2162 transitions. [2023-11-21 21:00:47,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2162 transitions. [2023-11-21 21:00:47,908 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2023-11-21 21:00:47,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2162 transitions. [2023-11-21 21:00:47,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2023-11-21 21:00:47,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2023-11-21 21:00:47,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2162 transitions. [2023-11-21 21:00:47,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:47,950 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2023-11-21 21:00:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2162 transitions. [2023-11-21 21:00:47,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2023-11-21 21:00:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5161290322580645) internal successors, (2162), 1425 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2162 transitions. [2023-11-21 21:00:47,997 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2023-11-21 21:00:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,998 INFO L428 stractBuchiCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2023-11-21 21:00:47,999 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-21 21:00:47,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2162 transitions. [2023-11-21 21:00:48,010 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2023-11-21 21:00:48,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:48,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:48,011 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:48,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:48,012 INFO L748 eck$LassoCheckResult]: Stem: 4298#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 4304#L225-1 [2023-11-21 21:00:48,012 INFO L750 eck$LassoCheckResult]: Loop: 4304#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 4525#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 4522#L93 assume !(0 != main_~p1~0#1); 4426#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 4423#L97-1 assume !(0 != main_~p3~0#1); 4419#L101-1 assume !(0 != main_~p4~0#1); 4416#L105-1 assume !(0 != main_~p5~0#1); 4380#L109-1 assume !(0 != main_~p6~0#1); 4381#L113-1 assume !(0 != main_~p7~0#1); 4664#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4660#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4656#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4652#L129-1 assume !(0 != main_~p11~0#1); 4648#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4644#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4640#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4637#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 4632#L149-1 assume !(0 != main_~p1~0#1); 4629#L155-1 assume 0 != main_~p2~0#1; 4625#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 4621#L160 assume !(0 != main_~p3~0#1); 4612#L165-1 assume !(0 != main_~p4~0#1); 4608#L170-1 assume !(0 != main_~p5~0#1); 4604#L175-1 assume !(0 != main_~p6~0#1); 4605#L180-1 assume !(0 != main_~p7~0#1); 4616#L185-1 assume !(0 != main_~p8~0#1); 4595#L190-1 assume !(0 != main_~p9~0#1); 4591#L195-1 assume !(0 != main_~p10~0#1); 4564#L200-1 assume !(0 != main_~p11~0#1); 4538#L205-1 assume !(0 != main_~p12~0#1); 4534#L210-1 assume !(0 != main_~p13~0#1); 4531#L215-1 assume 0 != main_~p14~0#1; 4529#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 4527#L220 assume !(0 != main_~p15~0#1); 4304#L225-1 [2023-11-21 21:00:48,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-21 21:00:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552569985] [2023-11-21 21:00:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,020 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:48,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1797068412, now seen corresponding path program 1 times [2023-11-21 21:00:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913894262] [2023-11-21 21:00:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913894262] [2023-11-21 21:00:48,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913894262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:48,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:48,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:48,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723408961] [2023-11-21 21:00:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:48,063 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:48,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:48,065 INFO L87 Difference]: Start difference. First operand 1426 states and 2162 transitions. cyclomatic complexity: 768 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:48,096 INFO L93 Difference]: Finished difference Result 2818 states and 4226 transitions. [2023-11-21 21:00:48,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4226 transitions. [2023-11-21 21:00:48,128 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2023-11-21 21:00:48,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4226 transitions. [2023-11-21 21:00:48,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2023-11-21 21:00:48,158 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2023-11-21 21:00:48,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4226 transitions. [2023-11-21 21:00:48,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:48,164 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2023-11-21 21:00:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4226 transitions. [2023-11-21 21:00:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2023-11-21 21:00:48,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.4996451383960256) internal successors, (4226), 2817 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:48,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4226 transitions. [2023-11-21 21:00:48,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2023-11-21 21:00:48,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:48,261 INFO L428 stractBuchiCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2023-11-21 21:00:48,261 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-21 21:00:48,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4226 transitions. [2023-11-21 21:00:48,289 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2023-11-21 21:00:48,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:48,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:48,293 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:48,293 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:48,293 INFO L748 eck$LassoCheckResult]: Stem: 8550#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8551#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 8555#L225-1 [2023-11-21 21:00:48,294 INFO L750 eck$LassoCheckResult]: Loop: 8555#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 8710#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 8711#L93 assume !(0 != main_~p1~0#1); 8826#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 8825#L97-1 assume !(0 != main_~p3~0#1); 8823#L101-1 assume !(0 != main_~p4~0#1); 8820#L105-1 assume !(0 != main_~p5~0#1); 8816#L109-1 assume !(0 != main_~p6~0#1); 8812#L113-1 assume !(0 != main_~p7~0#1); 8808#L117-1 assume !(0 != main_~p8~0#1); 8806#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8804#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8802#L129-1 assume !(0 != main_~p11~0#1); 8800#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8798#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8796#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8794#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 8791#L149-1 assume !(0 != main_~p1~0#1); 8792#L155-1 assume 0 != main_~p2~0#1; 8780#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 8781#L160 assume !(0 != main_~p3~0#1); 8770#L165-1 assume !(0 != main_~p4~0#1); 8771#L170-1 assume !(0 != main_~p5~0#1); 8759#L175-1 assume !(0 != main_~p6~0#1); 8761#L180-1 assume !(0 != main_~p7~0#1); 8751#L185-1 assume !(0 != main_~p8~0#1); 8752#L190-1 assume !(0 != main_~p9~0#1); 8744#L195-1 assume !(0 != main_~p10~0#1); 8743#L200-1 assume !(0 != main_~p11~0#1); 8734#L205-1 assume !(0 != main_~p12~0#1); 8733#L210-1 assume !(0 != main_~p13~0#1); 8723#L215-1 assume 0 != main_~p14~0#1; 8724#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 8718#L220 assume !(0 != main_~p15~0#1); 8555#L225-1 [2023-11-21 21:00:48,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-21 21:00:48,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503373807] [2023-11-21 21:00:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1656519802, now seen corresponding path program 1 times [2023-11-21 21:00:48,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630868120] [2023-11-21 21:00:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:48,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630868120] [2023-11-21 21:00:48,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630868120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:48,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:48,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:48,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801196538] [2023-11-21 21:00:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:48,368 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:48,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:48,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:48,373 INFO L87 Difference]: Start difference. First operand 2818 states and 4226 transitions. cyclomatic complexity: 1472 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:48,423 INFO L93 Difference]: Finished difference Result 5570 states and 8258 transitions. [2023-11-21 21:00:48,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8258 transitions. [2023-11-21 21:00:48,484 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2023-11-21 21:00:48,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8258 transitions. [2023-11-21 21:00:48,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2023-11-21 21:00:48,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2023-11-21 21:00:48,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8258 transitions. [2023-11-21 21:00:48,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:48,591 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2023-11-21 21:00:48,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8258 transitions. [2023-11-21 21:00:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2023-11-21 21:00:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.4825852782764812) internal successors, (8258), 5569 states have internal predecessors, (8258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8258 transitions. [2023-11-21 21:00:48,724 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2023-11-21 21:00:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:48,727 INFO L428 stractBuchiCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2023-11-21 21:00:48,727 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-21 21:00:48,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8258 transitions. [2023-11-21 21:00:48,756 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2023-11-21 21:00:48,757 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:48,757 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:48,758 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:48,758 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:48,759 INFO L748 eck$LassoCheckResult]: Stem: 16938#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 16939#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 16944#L225-1 [2023-11-21 21:00:48,761 INFO L750 eck$LassoCheckResult]: Loop: 16944#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 17264#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 17258#L93 assume !(0 != main_~p1~0#1); 17255#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 17248#L97-1 assume !(0 != main_~p3~0#1); 17249#L101-1 assume !(0 != main_~p4~0#1); 17250#L105-1 assume !(0 != main_~p5~0#1); 17359#L109-1 assume !(0 != main_~p6~0#1); 17334#L113-1 assume !(0 != main_~p7~0#1); 17332#L117-1 assume !(0 != main_~p8~0#1); 17330#L121-1 assume !(0 != main_~p9~0#1); 17329#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17328#L129-1 assume !(0 != main_~p11~0#1); 17327#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 17326#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 17325#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 17324#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 17322#L149-1 assume !(0 != main_~p1~0#1); 17320#L155-1 assume 0 != main_~p2~0#1; 17319#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 17154#L160 assume !(0 != main_~p3~0#1); 17153#L165-1 assume !(0 != main_~p4~0#1); 17137#L170-1 assume !(0 != main_~p5~0#1); 17138#L175-1 assume !(0 != main_~p6~0#1); 17115#L180-1 assume !(0 != main_~p7~0#1); 17116#L185-1 assume !(0 != main_~p8~0#1); 17305#L190-1 assume !(0 != main_~p9~0#1); 17300#L195-1 assume !(0 != main_~p10~0#1); 17294#L200-1 assume !(0 != main_~p11~0#1); 17288#L205-1 assume !(0 != main_~p12~0#1); 17282#L210-1 assume !(0 != main_~p13~0#1); 17278#L215-1 assume 0 != main_~p14~0#1; 17275#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 17270#L220 assume !(0 != main_~p15~0#1); 16944#L225-1 [2023-11-21 21:00:48,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-21 21:00:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030938512] [2023-11-21 21:00:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:48,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1790533308, now seen corresponding path program 1 times [2023-11-21 21:00:48,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480454034] [2023-11-21 21:00:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480454034] [2023-11-21 21:00:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480454034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:48,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:48,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:48,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930344484] [2023-11-21 21:00:48,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:48,841 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:48,844 INFO L87 Difference]: Start difference. First operand 5570 states and 8258 transitions. cyclomatic complexity: 2816 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:48,905 INFO L93 Difference]: Finished difference Result 11010 states and 16130 transitions. [2023-11-21 21:00:48,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16130 transitions. [2023-11-21 21:00:48,981 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2023-11-21 21:00:49,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16130 transitions. [2023-11-21 21:00:49,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2023-11-21 21:00:49,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2023-11-21 21:00:49,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16130 transitions. [2023-11-21 21:00:49,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:49,085 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2023-11-21 21:00:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16130 transitions. [2023-11-21 21:00:49,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2023-11-21 21:00:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.4650317892824705) internal successors, (16130), 11009 states have internal predecessors, (16130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16130 transitions. [2023-11-21 21:00:49,425 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2023-11-21 21:00:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:49,429 INFO L428 stractBuchiCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2023-11-21 21:00:49,429 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-21 21:00:49,429 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16130 transitions. [2023-11-21 21:00:49,540 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2023-11-21 21:00:49,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:49,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:49,541 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:49,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:49,542 INFO L748 eck$LassoCheckResult]: Stem: 33526#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33527#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 33536#L225-1 [2023-11-21 21:00:49,542 INFO L750 eck$LassoCheckResult]: Loop: 33536#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 33840#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 33838#L93 assume !(0 != main_~p1~0#1); 33837#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 33836#L97-1 assume !(0 != main_~p3~0#1); 33834#L101-1 assume !(0 != main_~p4~0#1); 33832#L105-1 assume !(0 != main_~p5~0#1); 33830#L109-1 assume !(0 != main_~p6~0#1); 33829#L113-1 assume !(0 != main_~p7~0#1); 33827#L117-1 assume !(0 != main_~p8~0#1); 33823#L121-1 assume !(0 != main_~p9~0#1); 33820#L125-1 assume !(0 != main_~p10~0#1); 33814#L129-1 assume !(0 != main_~p11~0#1); 33815#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 33806#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 33807#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 33798#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 33799#L149-1 assume !(0 != main_~p1~0#1); 33788#L155-1 assume 0 != main_~p2~0#1; 33789#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 33780#L160 assume !(0 != main_~p3~0#1); 33779#L165-1 assume !(0 != main_~p4~0#1); 33719#L170-1 assume !(0 != main_~p5~0#1); 33720#L175-1 assume !(0 != main_~p6~0#1); 33710#L180-1 assume !(0 != main_~p7~0#1); 33711#L185-1 assume !(0 != main_~p8~0#1); 33698#L190-1 assume !(0 != main_~p9~0#1); 33700#L195-1 assume !(0 != main_~p10~0#1); 33850#L200-1 assume !(0 != main_~p11~0#1); 33848#L205-1 assume !(0 != main_~p12~0#1); 33846#L210-1 assume !(0 != main_~p13~0#1); 33844#L215-1 assume 0 != main_~p14~0#1; 33843#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 33842#L220 assume !(0 != main_~p15~0#1); 33536#L225-1 [2023-11-21 21:00:49,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-21 21:00:49,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:49,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560808631] [2023-11-21 21:00:49,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:49,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:49,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:49,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash 698995654, now seen corresponding path program 1 times [2023-11-21 21:00:49,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835540184] [2023-11-21 21:00:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:49,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835540184] [2023-11-21 21:00:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835540184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093148449] [2023-11-21 21:00:49,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:49,594 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:49,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:49,595 INFO L87 Difference]: Start difference. First operand 11010 states and 16130 transitions. cyclomatic complexity: 5376 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:49,661 INFO L93 Difference]: Finished difference Result 21762 states and 31490 transitions. [2023-11-21 21:00:49,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 31490 transitions. [2023-11-21 21:00:49,905 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2023-11-21 21:00:50,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 31490 transitions. [2023-11-21 21:00:50,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2023-11-21 21:00:50,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2023-11-21 21:00:50,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 31490 transitions. [2023-11-21 21:00:50,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:50,063 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2023-11-21 21:00:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 31490 transitions. [2023-11-21 21:00:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2023-11-21 21:00:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.447017737340318) internal successors, (31490), 21761 states have internal predecessors, (31490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 31490 transitions. [2023-11-21 21:00:50,613 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2023-11-21 21:00:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:50,615 INFO L428 stractBuchiCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2023-11-21 21:00:50,615 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-21 21:00:50,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 31490 transitions. [2023-11-21 21:00:50,693 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2023-11-21 21:00:50,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:50,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:50,696 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:50,696 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:50,697 INFO L748 eck$LassoCheckResult]: Stem: 66304#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 66305#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 66309#L225-1 [2023-11-21 21:00:50,697 INFO L750 eck$LassoCheckResult]: Loop: 66309#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 66490#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 66486#L93 assume !(0 != main_~p1~0#1); 66484#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 66482#L97-1 assume !(0 != main_~p3~0#1); 66478#L101-1 assume !(0 != main_~p4~0#1); 66474#L105-1 assume !(0 != main_~p5~0#1); 66472#L109-1 assume !(0 != main_~p6~0#1); 66468#L113-1 assume !(0 != main_~p7~0#1); 66464#L117-1 assume !(0 != main_~p8~0#1); 66460#L121-1 assume !(0 != main_~p9~0#1); 66456#L125-1 assume !(0 != main_~p10~0#1); 66454#L129-1 assume !(0 != main_~p11~0#1); 66450#L133-1 assume !(0 != main_~p12~0#1); 66448#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 66446#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 66444#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 66440#L149-1 assume !(0 != main_~p1~0#1); 66438#L155-1 assume 0 != main_~p2~0#1; 66436#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 66433#L160 assume !(0 != main_~p3~0#1); 66428#L165-1 assume !(0 != main_~p4~0#1); 66424#L170-1 assume !(0 != main_~p5~0#1); 66421#L175-1 assume !(0 != main_~p6~0#1); 66422#L180-1 assume !(0 != main_~p7~0#1); 66521#L185-1 assume !(0 != main_~p8~0#1); 66517#L190-1 assume !(0 != main_~p9~0#1); 66513#L195-1 assume !(0 != main_~p10~0#1); 66510#L200-1 assume !(0 != main_~p11~0#1); 66505#L205-1 assume !(0 != main_~p12~0#1); 66502#L210-1 assume !(0 != main_~p13~0#1); 66499#L215-1 assume 0 != main_~p14~0#1; 66497#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 66494#L220 assume !(0 != main_~p15~0#1); 66309#L225-1 [2023-11-21 21:00:50,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,698 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2023-11-21 21:00:50,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:50,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304154104] [2023-11-21 21:00:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:50,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:50,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:50,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1121697480, now seen corresponding path program 1 times [2023-11-21 21:00:50,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:50,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847063979] [2023-11-21 21:00:50,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847063979] [2023-11-21 21:00:50,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847063979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:50,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:50,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:50,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087738530] [2023-11-21 21:00:50,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:50,763 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:50,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:50,767 INFO L87 Difference]: Start difference. First operand 21762 states and 31490 transitions. cyclomatic complexity: 10240 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:51,039 INFO L93 Difference]: Finished difference Result 43010 states and 61442 transitions. [2023-11-21 21:00:51,039 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 61442 transitions. [2023-11-21 21:00:51,532 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2023-11-21 21:00:51,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 61442 transitions. [2023-11-21 21:00:51,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2023-11-21 21:00:51,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2023-11-21 21:00:51,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 61442 transitions. [2023-11-21 21:00:51,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:51,946 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2023-11-21 21:00:51,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 61442 transitions. [2023-11-21 21:00:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2023-11-21 21:00:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4285514996512438) internal successors, (61442), 43009 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 61442 transitions. [2023-11-21 21:00:52,848 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2023-11-21 21:00:52,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:52,850 INFO L428 stractBuchiCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2023-11-21 21:00:52,850 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-21 21:00:52,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 61442 transitions. [2023-11-21 21:00:53,159 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2023-11-21 21:00:53,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:53,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:53,161 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:53,161 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:53,161 INFO L748 eck$LassoCheckResult]: Stem: 131082#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131083#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 131091#L225-1 [2023-11-21 21:00:53,161 INFO L750 eck$LassoCheckResult]: Loop: 131091#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 132067#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 132025#L93 assume !(0 != main_~p1~0#1); 132027#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 132019#L97-1 assume !(0 != main_~p3~0#1); 132020#L101-1 assume !(0 != main_~p4~0#1); 132010#L105-1 assume !(0 != main_~p5~0#1); 132012#L109-1 assume !(0 != main_~p6~0#1); 132004#L113-1 assume !(0 != main_~p7~0#1); 132006#L117-1 assume !(0 != main_~p8~0#1); 132192#L121-1 assume !(0 != main_~p9~0#1); 132188#L125-1 assume !(0 != main_~p10~0#1); 132147#L129-1 assume !(0 != main_~p11~0#1); 132145#L133-1 assume !(0 != main_~p12~0#1); 132141#L137-1 assume !(0 != main_~p13~0#1); 132138#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 132137#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 132122#L149-1 assume !(0 != main_~p1~0#1); 132121#L155-1 assume 0 != main_~p2~0#1; 132120#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 132119#L160 assume !(0 != main_~p3~0#1); 132116#L165-1 assume !(0 != main_~p4~0#1); 132114#L170-1 assume !(0 != main_~p5~0#1); 132113#L175-1 assume !(0 != main_~p6~0#1); 132111#L180-1 assume !(0 != main_~p7~0#1); 132109#L185-1 assume !(0 != main_~p8~0#1); 132107#L190-1 assume !(0 != main_~p9~0#1); 132105#L195-1 assume !(0 != main_~p10~0#1); 131936#L200-1 assume !(0 != main_~p11~0#1); 131935#L205-1 assume !(0 != main_~p12~0#1); 132094#L210-1 assume !(0 != main_~p13~0#1); 132089#L215-1 assume 0 != main_~p14~0#1; 132084#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 132077#L220 assume !(0 != main_~p15~0#1); 131091#L225-1 [2023-11-21 21:00:53,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,162 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2023-11-21 21:00:53,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037279007] [2023-11-21 21:00:53,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 304049030, now seen corresponding path program 1 times [2023-11-21 21:00:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363602426] [2023-11-21 21:00:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:53,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:53,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363602426] [2023-11-21 21:00:53,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363602426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:53,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:53,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:53,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168190401] [2023-11-21 21:00:53,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:53,349 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:53,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:53,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:53,350 INFO L87 Difference]: Start difference. First operand 43010 states and 61442 transitions. cyclomatic complexity: 19456 Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:53,687 INFO L93 Difference]: Finished difference Result 84994 states and 119810 transitions. [2023-11-21 21:00:53,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 119810 transitions. [2023-11-21 21:00:54,215 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2023-11-21 21:00:54,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 119810 transitions. [2023-11-21 21:00:54,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2023-11-21 21:00:54,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2023-11-21 21:00:54,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 119810 transitions. [2023-11-21 21:00:54,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:54,799 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2023-11-21 21:00:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 119810 transitions. [2023-11-21 21:00:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2023-11-21 21:00:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.409628914982234) internal successors, (119810), 84993 states have internal predecessors, (119810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 119810 transitions. [2023-11-21 21:00:56,240 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2023-11-21 21:00:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:56,243 INFO L428 stractBuchiCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2023-11-21 21:00:56,244 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-21 21:00:56,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 119810 transitions. [2023-11-21 21:00:56,737 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2023-11-21 21:00:56,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:56,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:56,739 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:56,739 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:56,740 INFO L748 eck$LassoCheckResult]: Stem: 259095#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 259096#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#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_#t~nondet13#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_#t~nondet14#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;havoc main_#t~nondet15#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;havoc main_#t~nondet16#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;havoc main_#t~nondet17#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_#t~nondet18#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 259107#L225-1 [2023-11-21 21:00:56,740 INFO L750 eck$LassoCheckResult]: Loop: 259107#L225-1 assume !false;havoc main_#t~nondet19#1;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 260516#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 260513#L93 assume !(0 != main_~p1~0#1); 260510#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 260508#L97-1 assume !(0 != main_~p3~0#1); 260505#L101-1 assume !(0 != main_~p4~0#1); 260501#L105-1 assume !(0 != main_~p5~0#1); 260497#L109-1 assume !(0 != main_~p6~0#1); 260493#L113-1 assume !(0 != main_~p7~0#1); 260489#L117-1 assume !(0 != main_~p8~0#1); 260485#L121-1 assume !(0 != main_~p9~0#1); 260481#L125-1 assume !(0 != main_~p10~0#1); 260478#L129-1 assume !(0 != main_~p11~0#1); 260475#L133-1 assume !(0 != main_~p12~0#1); 260476#L137-1 assume !(0 != main_~p13~0#1); 260580#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 260576#L145-1 assume !(0 != main_~p15~0#1); 260572#L149-1 assume !(0 != main_~p1~0#1); 260570#L155-1 assume 0 != main_~p2~0#1; 260568#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 260565#L160 assume !(0 != main_~p3~0#1); 260560#L165-1 assume !(0 != main_~p4~0#1); 260556#L170-1 assume !(0 != main_~p5~0#1); 260552#L175-1 assume !(0 != main_~p6~0#1); 260548#L180-1 assume !(0 != main_~p7~0#1); 260544#L185-1 assume !(0 != main_~p8~0#1); 260540#L190-1 assume !(0 != main_~p9~0#1); 260536#L195-1 assume !(0 != main_~p10~0#1); 260533#L200-1 assume !(0 != main_~p11~0#1); 260530#L205-1 assume !(0 != main_~p12~0#1); 260527#L210-1 assume !(0 != main_~p13~0#1); 260525#L215-1 assume 0 != main_~p14~0#1; 260523#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 260520#L220 assume !(0 != main_~p15~0#1); 259107#L225-1 [2023-11-21 21:00:56,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:56,741 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2023-11-21 21:00:56,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:56,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614645591] [2023-11-21 21:00:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:56,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1690095676, now seen corresponding path program 1 times [2023-11-21 21:00:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327015051] [2023-11-21 21:00:56,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:56,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 365150982, now seen corresponding path program 1 times [2023-11-21 21:00:56,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:56,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926491254] [2023-11-21 21:00:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:56,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:56,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:57,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:57,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 09:00:57 BoogieIcfgContainer [2023-11-21 21:00:57,903 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 21:00:57,904 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:57,904 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:57,905 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:57,905 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:46" (3/4) ... [2023-11-21 21:00:57,907 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 21:00:57,964 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:00:57,964 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:57,965 INFO L158 Benchmark]: Toolchain (without parser) took 12592.20ms. Allocated memory was 153.1MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 123.4MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 669.0MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,965 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:57,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.26ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 111.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.27ms. Allocated memory is still 153.1MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,967 INFO L158 Benchmark]: Boogie Preprocessor took 44.28ms. Allocated memory is still 153.1MB. Free memory was 109.3MB in the beginning and 107.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,967 INFO L158 Benchmark]: RCFGBuilder took 484.75ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 92.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,968 INFO L158 Benchmark]: BuchiAutomizer took 11623.08ms. Allocated memory was 153.1MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 92.1MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 635.5MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,968 INFO L158 Benchmark]: Witness Printer took 59.80ms. Allocated memory is still 9.0GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:57,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.26ms. Allocated memory is still 153.1MB. Free memory was 123.0MB in the beginning and 111.0MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.27ms. Allocated memory is still 153.1MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.28ms. Allocated memory is still 153.1MB. Free memory was 109.3MB in the beginning and 107.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.75ms. Allocated memory is still 153.1MB. Free memory was 107.3MB in the beginning and 92.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 11623.08ms. Allocated memory was 153.1MB in the beginning and 9.0GB in the end (delta: 8.9GB). Free memory was 92.1MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 635.5MB. Max. memory is 16.1GB. * Witness Printer took 59.80ms. Allocated memory is still 9.0GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 3.2MB). 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 11 terminating modules (11 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.11 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 84994 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.5s and 12 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.1s. Büchi inclusion checks took 7.7s. Highest rank in rank-based complementation 0. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 3.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 2.6s Buchi closure took 0.1s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 646 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 646 mSDsluCounter, 2070 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 800 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1270 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI11 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: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND TRUE p2 != 0 [L98] lk2 = 1 [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND TRUE p2 != 0 [L161] COND FALSE !(lk2 != 1) [L162] lk2 = 0 [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND TRUE p14 != 0 [L221] COND FALSE !(lk14 != 1) [L222] lk14 = 0 [L225] COND FALSE !(p15 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 56]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND TRUE p2 != 0 [L98] lk2 = 1 [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND TRUE p2 != 0 [L161] COND FALSE !(lk2 != 1) [L162] lk2 = 0 [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND TRUE p14 != 0 [L221] COND FALSE !(lk14 != 1) [L222] lk14 = 0 [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 21:00:58,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_621405f7-d5c3-4510-85c6-0ec5606a028d/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)