./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/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_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/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_d5f0c3ec-77cb-472d-9005-4eb8917b796c/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 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:54,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:54,666 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 20:58:54,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:54,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:54,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:54,702 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:54,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:54,703 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:58:54,704 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:58:54,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:54,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:54,706 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:54,707 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 20:58:54,707 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 20:58:54,708 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 20:58:54,708 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 20:58:54,709 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 20:58:54,710 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 20:58:54,710 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:54,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 20:58:54,712 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:54,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:54,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:54,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:54,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 20:58:54,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 20:58:54,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 20:58:54,715 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:58:54,716 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:54,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:58:54,717 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 20:58:54,717 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:54,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:54,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:54,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:54,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:58:54,720 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 20:58:54,720 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_d5f0c3ec-77cb-472d-9005-4eb8917b796c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fd6142dd23f608c3bc9ae24389b4aee583128e9e6b549483298584de0c08ecd [2023-11-21 20:58:54,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:54,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:54,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:54,997 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:54,998 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:54,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/locks/test_locks_13.c [2023-11-21 20:58:58,177 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:58,433 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:58,434 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/sv-benchmarks/c/locks/test_locks_13.c [2023-11-21 20:58:58,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/data/ed80ea7a4/2c201a43a40e423aa28c42523f4c2a67/FLAG9bc4feb5f [2023-11-21 20:58:58,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/data/ed80ea7a4/2c201a43a40e423aa28c42523f4c2a67 [2023-11-21 20:58:58,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:58,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:58,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:58,478 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:58,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:58,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba7467c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58, skipping insertion in model container [2023-11-21 20:58:58,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,528 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:58,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:58,749 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:58,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:58,791 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:58,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58 WrapperNode [2023-11-21 20:58:58,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:58,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:58,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:58,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:58,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,834 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 171 [2023-11-21 20:58:58,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:58,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:58,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:58,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:58,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,849 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,859 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 20:58:58,859 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:58,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:58,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:58,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:58,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (1/1) ... [2023-11-21 20:58:58,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 20:58:58,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:58,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:58,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:58:59,045 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:59,047 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:59,280 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:59,291 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:59,291 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 20:58:59,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:59 BoogieIcfgContainer [2023-11-21 20:58:59,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:59,294 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 20:58:59,294 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 20:58:59,298 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 20:58:59,299 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:58:59,300 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 08:58:58" (1/3) ... [2023-11-21 20:58:59,301 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f690f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 08:58:59, skipping insertion in model container [2023-11-21 20:58:59,301 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:58:59,301 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:58" (2/3) ... [2023-11-21 20:58:59,302 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f690f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 08:58:59, skipping insertion in model container [2023-11-21 20:58:59,302 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 20:58:59,302 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:59" (3/3) ... [2023-11-21 20:58:59,303 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_13.c [2023-11-21 20:58:59,363 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 20:58:59,363 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 20:58:59,363 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 20:58:59,364 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 20:58:59,364 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 20:58:59,364 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 20:58:59,364 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 20:58:59,365 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 20:58:59,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.875) internal successors, (90), 48 states have internal predecessors, (90), 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 20:58:59,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2023-11-21 20:58:59,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:58:59,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:58:59,402 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:58:59,402 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] [2023-11-21 20:58:59,403 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 20:58:59,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.875) internal successors, (90), 48 states have internal predecessors, (90), 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 20:58:59,408 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2023-11-21 20:58:59,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:58:59,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:58:59,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:58:59,409 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] [2023-11-21 20:58:59,418 INFO L748 eck$LassoCheckResult]: Stem: 22#$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(16, 2);call #Ultimate.allocInit(12, 3); 28#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_~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_~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_~cond~0#1; 10#L197-1true [2023-11-21 20:58:59,419 INFO L750 eck$LassoCheckResult]: Loop: 10#L197-1true assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 48#L52true 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; 15#L83true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 31#L83-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 7#L87-1true assume !(0 != main_~p3~0#1); 27#L91-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 25#L95-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 32#L99-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 29#L103-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 38#L107-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 30#L111-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 43#L115-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17#L119-1true assume !(0 != main_~p11~0#1); 26#L123-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 14#L127-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 18#L131-1true assume !(0 != main_~p1~0#1); 9#L137-1true assume !(0 != main_~p2~0#1); 5#L142-1true assume !(0 != main_~p3~0#1); 45#L147-1true assume !(0 != main_~p4~0#1); 8#L152-1true assume !(0 != main_~p5~0#1); 12#L157-1true assume !(0 != main_~p6~0#1); 34#L162-1true assume !(0 != main_~p7~0#1); 35#L167-1true assume !(0 != main_~p8~0#1); 36#L172-1true assume !(0 != main_~p9~0#1); 42#L177-1true assume !(0 != main_~p10~0#1); 49#L182-1true assume !(0 != main_~p11~0#1); 24#L187-1true assume !(0 != main_~p12~0#1); 46#L192-1true assume !(0 != main_~p13~0#1); 10#L197-1true [2023-11-21 20:58:59,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 20:58:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650355450] [2023-11-21 20:58:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:58:59,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:58:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:58:59,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:58:59,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash 203947253, now seen corresponding path program 1 times [2023-11-21 20:58:59,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:59,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609598782] [2023-11-21 20:58:59,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:59,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:59,697 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 20:58:59,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:59,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609598782] [2023-11-21 20:58:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609598782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:59,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:59,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:58:59,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011525409] [2023-11-21 20:58:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:59,704 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:58:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:59,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:58:59,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:58:59,752 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 1.875) internal successors, (90), 48 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:58:59,868 INFO L93 Difference]: Finished difference Result 91 states and 165 transitions. [2023-11-21 20:58:59,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 165 transitions. [2023-11-21 20:58:59,889 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2023-11-21 20:58:59,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 83 states and 133 transitions. [2023-11-21 20:58:59,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 83 [2023-11-21 20:58:59,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 83 [2023-11-21 20:58:59,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 133 transitions. [2023-11-21 20:58:59,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:58:59,904 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 133 transitions. [2023-11-21 20:58:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 133 transitions. [2023-11-21 20:58:59,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-21 20:58:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.6024096385542168) internal successors, (133), 82 states have internal predecessors, (133), 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 20:58:59,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 133 transitions. [2023-11-21 20:58:59,941 INFO L240 hiAutomatonCegarLoop]: Abstraction has 83 states and 133 transitions. [2023-11-21 20:58:59,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:58:59,954 INFO L428 stractBuchiCegarLoop]: Abstraction has 83 states and 133 transitions. [2023-11-21 20:58:59,955 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 20:58:59,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 133 transitions. [2023-11-21 20:58:59,957 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 81 [2023-11-21 20:58:59,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:58:59,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:58:59,958 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:58:59,958 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] [2023-11-21 20:58:59,958 INFO L748 eck$LassoCheckResult]: Stem: 197#$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(16, 2);call #Ultimate.allocInit(12, 3); 155#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_~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_~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_~cond~0#1; 156#L197-1 [2023-11-21 20:58:59,959 INFO L750 eck$LassoCheckResult]: Loop: 156#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 198#L52 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; 199#L83 assume !(0 != main_~p1~0#1); 173#L83-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 162#L87-1 assume !(0 != main_~p3~0#1); 149#L91-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 150#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 174#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 163#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 164#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 171#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 172#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 191#L119-1 assume !(0 != main_~p11~0#1); 192#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 183#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 184#L131-1 assume !(0 != main_~p1~0#1); 168#L137-1 assume !(0 != main_~p2~0#1); 157#L142-1 assume !(0 != main_~p3~0#1); 159#L147-1 assume !(0 != main_~p4~0#1); 161#L152-1 assume !(0 != main_~p5~0#1); 214#L157-1 assume !(0 != main_~p6~0#1); 212#L162-1 assume !(0 != main_~p7~0#1); 210#L167-1 assume !(0 != main_~p8~0#1); 207#L172-1 assume !(0 != main_~p9~0#1); 206#L177-1 assume !(0 != main_~p10~0#1); 204#L182-1 assume !(0 != main_~p11~0#1); 200#L187-1 assume !(0 != main_~p12~0#1); 186#L192-1 assume !(0 != main_~p13~0#1); 156#L197-1 [2023-11-21 20:58:59,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-21 20:58:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413883795] [2023-11-21 20:58:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:58:59,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:58:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:58:59,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:58:59,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 265986867, now seen corresponding path program 1 times [2023-11-21 20:58:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639486715] [2023-11-21 20:58:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,122 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 20:59:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639486715] [2023-11-21 20:59:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639486715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009714046] [2023-11-21 20:59:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,124 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,126 INFO L87 Difference]: Start difference. First operand 83 states and 133 transitions. cyclomatic complexity: 52 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,152 INFO L93 Difference]: Finished difference Result 162 states and 258 transitions. [2023-11-21 20:59:00,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 258 transitions. [2023-11-21 20:59:00,156 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 160 [2023-11-21 20:59:00,158 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 162 states and 258 transitions. [2023-11-21 20:59:00,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2023-11-21 20:59:00,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2023-11-21 20:59:00,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 258 transitions. [2023-11-21 20:59:00,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,164 INFO L218 hiAutomatonCegarLoop]: Abstraction has 162 states and 258 transitions. [2023-11-21 20:59:00,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states and 258 transitions. [2023-11-21 20:59:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-21 20:59:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 162 states have (on average 1.5925925925925926) internal successors, (258), 161 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 258 transitions. [2023-11-21 20:59:00,182 INFO L240 hiAutomatonCegarLoop]: Abstraction has 162 states and 258 transitions. [2023-11-21 20:59:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:00,184 INFO L428 stractBuchiCegarLoop]: Abstraction has 162 states and 258 transitions. [2023-11-21 20:59:00,184 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 20:59:00,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 162 states and 258 transitions. [2023-11-21 20:59:00,187 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 160 [2023-11-21 20:59:00,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:00,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:00,188 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:00,188 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] [2023-11-21 20:59:00,188 INFO L748 eck$LassoCheckResult]: Stem: 454#$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(16, 2);call #Ultimate.allocInit(12, 3); 406#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_~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_~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_~cond~0#1; 405#L197-1 [2023-11-21 20:59:00,188 INFO L750 eck$LassoCheckResult]: Loop: 405#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 457#L52 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; 458#L83 assume !(0 != main_~p1~0#1); 509#L83-2 assume !(0 != main_~p2~0#1); 508#L87-1 assume !(0 != main_~p3~0#1); 507#L91-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 506#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 505#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 504#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 503#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 502#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 501#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 500#L119-1 assume !(0 != main_~p11~0#1); 499#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 498#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 496#L131-1 assume !(0 != main_~p1~0#1); 495#L137-1 assume !(0 != main_~p2~0#1); 493#L142-1 assume !(0 != main_~p3~0#1); 492#L147-1 assume !(0 != main_~p4~0#1); 415#L152-1 assume !(0 != main_~p5~0#1); 416#L157-1 assume !(0 != main_~p6~0#1); 483#L162-1 assume !(0 != main_~p7~0#1); 482#L167-1 assume !(0 != main_~p8~0#1); 435#L172-1 assume !(0 != main_~p9~0#1); 436#L177-1 assume !(0 != main_~p10~0#1); 473#L182-1 assume !(0 != main_~p11~0#1); 472#L187-1 assume !(0 != main_~p12~0#1); 452#L192-1 assume !(0 != main_~p13~0#1); 405#L197-1 [2023-11-21 20:59:00,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,189 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-21 20:59:00,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345281018] [2023-11-21 20:59:00,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:00,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash 406535477, now seen corresponding path program 1 times [2023-11-21 20:59:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020753970] [2023-11-21 20:59:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,305 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 20:59:00,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020753970] [2023-11-21 20:59:00,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020753970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449909602] [2023-11-21 20:59:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,307 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:00,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,308 INFO L87 Difference]: Start difference. First operand 162 states and 258 transitions. cyclomatic complexity: 100 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,351 INFO L93 Difference]: Finished difference Result 318 states and 502 transitions. [2023-11-21 20:59:00,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 318 states and 502 transitions. [2023-11-21 20:59:00,362 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 316 [2023-11-21 20:59:00,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 318 states to 318 states and 502 transitions. [2023-11-21 20:59:00,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 318 [2023-11-21 20:59:00,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 318 [2023-11-21 20:59:00,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 318 states and 502 transitions. [2023-11-21 20:59:00,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,371 INFO L218 hiAutomatonCegarLoop]: Abstraction has 318 states and 502 transitions. [2023-11-21 20:59:00,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states and 502 transitions. [2023-11-21 20:59:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2023-11-21 20:59:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 318 states have (on average 1.578616352201258) internal successors, (502), 317 states have internal predecessors, (502), 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 20:59:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 502 transitions. [2023-11-21 20:59:00,401 INFO L240 hiAutomatonCegarLoop]: Abstraction has 318 states and 502 transitions. [2023-11-21 20:59:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:00,403 INFO L428 stractBuchiCegarLoop]: Abstraction has 318 states and 502 transitions. [2023-11-21 20:59:00,403 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 20:59:00,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 318 states and 502 transitions. [2023-11-21 20:59:00,406 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 316 [2023-11-21 20:59:00,406 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:00,406 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:00,407 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:00,407 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] [2023-11-21 20:59:00,407 INFO L748 eck$LassoCheckResult]: Stem: 941#$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(16, 2);call #Ultimate.allocInit(12, 3); 892#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_~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_~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_~cond~0#1; 893#L197-1 [2023-11-21 20:59:00,408 INFO L750 eck$LassoCheckResult]: Loop: 893#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 992#L52 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; 990#L83 assume !(0 != main_~p1~0#1); 986#L83-2 assume !(0 != main_~p2~0#1); 984#L87-1 assume !(0 != main_~p3~0#1); 981#L91-1 assume !(0 != main_~p4~0#1); 979#L95-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 977#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 975#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 973#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 971#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 969#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 967#L119-1 assume !(0 != main_~p11~0#1); 965#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 963#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 960#L131-1 assume !(0 != main_~p1~0#1); 961#L137-1 assume !(0 != main_~p2~0#1); 1036#L142-1 assume !(0 != main_~p3~0#1); 1031#L147-1 assume !(0 != main_~p4~0#1); 1028#L152-1 assume !(0 != main_~p5~0#1); 1024#L157-1 assume !(0 != main_~p6~0#1); 1020#L162-1 assume !(0 != main_~p7~0#1); 1016#L167-1 assume !(0 != main_~p8~0#1); 1011#L172-1 assume !(0 != main_~p9~0#1); 1008#L177-1 assume !(0 != main_~p10~0#1); 1004#L182-1 assume !(0 != main_~p11~0#1); 999#L187-1 assume !(0 != main_~p12~0#1); 996#L192-1 assume !(0 != main_~p13~0#1); 893#L197-1 [2023-11-21 20:59:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-21 20:59:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430732931] [2023-11-21 20:59:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:00,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1398902857, now seen corresponding path program 1 times [2023-11-21 20:59:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373827142] [2023-11-21 20:59:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,493 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 20:59:00,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373827142] [2023-11-21 20:59:00,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373827142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022512766] [2023-11-21 20:59:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,495 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:00,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,496 INFO L87 Difference]: Start difference. First operand 318 states and 502 transitions. cyclomatic complexity: 192 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,516 INFO L93 Difference]: Finished difference Result 626 states and 978 transitions. [2023-11-21 20:59:00,516 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 626 states and 978 transitions. [2023-11-21 20:59:00,526 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 624 [2023-11-21 20:59:00,534 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 626 states to 626 states and 978 transitions. [2023-11-21 20:59:00,534 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 626 [2023-11-21 20:59:00,536 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 626 [2023-11-21 20:59:00,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 626 states and 978 transitions. [2023-11-21 20:59:00,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,539 INFO L218 hiAutomatonCegarLoop]: Abstraction has 626 states and 978 transitions. [2023-11-21 20:59:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states and 978 transitions. [2023-11-21 20:59:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2023-11-21 20:59:00,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 626 states have (on average 1.5623003194888179) internal successors, (978), 625 states have internal predecessors, (978), 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 20:59:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 978 transitions. [2023-11-21 20:59:00,599 INFO L240 hiAutomatonCegarLoop]: Abstraction has 626 states and 978 transitions. [2023-11-21 20:59:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:00,609 INFO L428 stractBuchiCegarLoop]: Abstraction has 626 states and 978 transitions. [2023-11-21 20:59:00,609 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 20:59:00,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 626 states and 978 transitions. [2023-11-21 20:59:00,614 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 624 [2023-11-21 20:59:00,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:00,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:00,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:00,615 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] [2023-11-21 20:59:00,616 INFO L748 eck$LassoCheckResult]: Stem: 1881#$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(16, 2);call #Ultimate.allocInit(12, 3); 1842#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_~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_~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_~cond~0#1; 1843#L197-1 [2023-11-21 20:59:00,616 INFO L750 eck$LassoCheckResult]: Loop: 1843#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 1937#L52 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; 1935#L83 assume !(0 != main_~p1~0#1); 1931#L83-2 assume !(0 != main_~p2~0#1); 1929#L87-1 assume !(0 != main_~p3~0#1); 1925#L91-1 assume !(0 != main_~p4~0#1); 1921#L95-1 assume !(0 != main_~p5~0#1); 1919#L99-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1917#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1915#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1913#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1911#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1909#L119-1 assume !(0 != main_~p11~0#1); 1907#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1905#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1902#L131-1 assume !(0 != main_~p1~0#1); 1903#L137-1 assume !(0 != main_~p2~0#1); 1981#L142-1 assume !(0 != main_~p3~0#1); 1976#L147-1 assume !(0 != main_~p4~0#1); 1972#L152-1 assume !(0 != main_~p5~0#1); 1969#L157-1 assume !(0 != main_~p6~0#1); 1965#L162-1 assume !(0 != main_~p7~0#1); 1961#L167-1 assume !(0 != main_~p8~0#1); 1956#L172-1 assume !(0 != main_~p9~0#1); 1953#L177-1 assume !(0 != main_~p10~0#1); 1949#L182-1 assume !(0 != main_~p11~0#1); 1944#L187-1 assume !(0 != main_~p12~0#1); 1941#L192-1 assume !(0 != main_~p13~0#1); 1843#L197-1 [2023-11-21 20:59:00,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,617 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-21 20:59:00,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743074245] [2023-11-21 20:59:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:00,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1180048139, now seen corresponding path program 1 times [2023-11-21 20:59:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696579350] [2023-11-21 20:59:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,667 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 20:59:00,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696579350] [2023-11-21 20:59:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696579350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288605904] [2023-11-21 20:59:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,670 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,671 INFO L87 Difference]: Start difference. First operand 626 states and 978 transitions. cyclomatic complexity: 368 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,692 INFO L93 Difference]: Finished difference Result 1234 states and 1906 transitions. [2023-11-21 20:59:00,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1234 states and 1906 transitions. [2023-11-21 20:59:00,706 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1232 [2023-11-21 20:59:00,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1234 states to 1234 states and 1906 transitions. [2023-11-21 20:59:00,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1234 [2023-11-21 20:59:00,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1234 [2023-11-21 20:59:00,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1234 states and 1906 transitions. [2023-11-21 20:59:00,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,723 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2023-11-21 20:59:00,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states and 1906 transitions. [2023-11-21 20:59:00,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1234. [2023-11-21 20:59:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1234 states, 1234 states have (on average 1.5445705024311183) internal successors, (1906), 1233 states have internal predecessors, (1906), 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 20:59:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1234 states to 1234 states and 1906 transitions. [2023-11-21 20:59:00,762 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2023-11-21 20:59:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:00,766 INFO L428 stractBuchiCegarLoop]: Abstraction has 1234 states and 1906 transitions. [2023-11-21 20:59:00,766 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-21 20:59:00,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1234 states and 1906 transitions. [2023-11-21 20:59:00,775 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1232 [2023-11-21 20:59:00,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:00,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:00,778 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:00,778 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] [2023-11-21 20:59:00,779 INFO L748 eck$LassoCheckResult]: Stem: 3757#$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(16, 2);call #Ultimate.allocInit(12, 3); 3708#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_~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_~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_~cond~0#1; 3709#L197-1 [2023-11-21 20:59:00,779 INFO L750 eck$LassoCheckResult]: Loop: 3709#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 3846#L52 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; 3842#L83 assume !(0 != main_~p1~0#1); 3835#L83-2 assume !(0 != main_~p2~0#1); 3830#L87-1 assume !(0 != main_~p3~0#1); 3823#L91-1 assume !(0 != main_~p4~0#1); 3815#L95-1 assume !(0 != main_~p5~0#1); 3809#L99-1 assume !(0 != main_~p6~0#1); 3804#L103-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 3801#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 3798#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 3795#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 3792#L119-1 assume !(0 != main_~p11~0#1); 3789#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 3785#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 3786#L131-1 assume !(0 != main_~p1~0#1); 3913#L137-1 assume !(0 != main_~p2~0#1); 3909#L142-1 assume !(0 != main_~p3~0#1); 3899#L147-1 assume !(0 != main_~p4~0#1); 3894#L152-1 assume !(0 != main_~p5~0#1); 3892#L157-1 assume !(0 != main_~p6~0#1); 3891#L162-1 assume !(0 != main_~p7~0#1); 3889#L167-1 assume !(0 != main_~p8~0#1); 3882#L172-1 assume !(0 != main_~p9~0#1); 3871#L177-1 assume !(0 != main_~p10~0#1); 3863#L182-1 assume !(0 != main_~p11~0#1); 3858#L187-1 assume !(0 != main_~p12~0#1); 3855#L192-1 assume !(0 != main_~p13~0#1); 3709#L197-1 [2023-11-21 20:59:00,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-21 20:59:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834550361] [2023-11-21 20:59:00,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:00,798 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:00,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash -757346313, now seen corresponding path program 1 times [2023-11-21 20:59:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751394187] [2023-11-21 20:59:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,866 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 20:59:00,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751394187] [2023-11-21 20:59:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751394187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:00,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520055809] [2023-11-21 20:59:00,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,869 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:00,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:00,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:00,870 INFO L87 Difference]: Start difference. First operand 1234 states and 1906 transitions. cyclomatic complexity: 704 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:00,907 INFO L93 Difference]: Finished difference Result 2434 states and 3714 transitions. [2023-11-21 20:59:00,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2434 states and 3714 transitions. [2023-11-21 20:59:00,966 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2432 [2023-11-21 20:59:00,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2434 states to 2434 states and 3714 transitions. [2023-11-21 20:59:00,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2434 [2023-11-21 20:59:00,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2434 [2023-11-21 20:59:00,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2434 states and 3714 transitions. [2023-11-21 20:59:00,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2023-11-21 20:59:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states and 3714 transitions. [2023-11-21 20:59:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2023-11-21 20:59:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 2434 states have (on average 1.5258833196384551) internal successors, (3714), 2433 states have internal predecessors, (3714), 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 20:59:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3714 transitions. [2023-11-21 20:59:01,064 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2023-11-21 20:59:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:01,067 INFO L428 stractBuchiCegarLoop]: Abstraction has 2434 states and 3714 transitions. [2023-11-21 20:59:01,067 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-21 20:59:01,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2434 states and 3714 transitions. [2023-11-21 20:59:01,086 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2432 [2023-11-21 20:59:01,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:01,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:01,088 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:01,088 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] [2023-11-21 20:59:01,088 INFO L748 eck$LassoCheckResult]: Stem: 7432#$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(16, 2);call #Ultimate.allocInit(12, 3); 7382#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_~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_~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_~cond~0#1; 7383#L197-1 [2023-11-21 20:59:01,088 INFO L750 eck$LassoCheckResult]: Loop: 7383#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 7754#L52 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; 7752#L83 assume !(0 != main_~p1~0#1); 7749#L83-2 assume !(0 != main_~p2~0#1); 7746#L87-1 assume !(0 != main_~p3~0#1); 7743#L91-1 assume !(0 != main_~p4~0#1); 7739#L95-1 assume !(0 != main_~p5~0#1); 7740#L99-1 assume !(0 != main_~p6~0#1); 7619#L103-1 assume !(0 != main_~p7~0#1); 7616#L107-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 7613#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 7610#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 7607#L119-1 assume !(0 != main_~p11~0#1); 7604#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 7600#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 7601#L131-1 assume !(0 != main_~p1~0#1); 7726#L137-1 assume !(0 != main_~p2~0#1); 7590#L142-1 assume !(0 != main_~p3~0#1); 7584#L147-1 assume !(0 != main_~p4~0#1); 7586#L152-1 assume !(0 != main_~p5~0#1); 7810#L157-1 assume !(0 != main_~p6~0#1); 7806#L162-1 assume !(0 != main_~p7~0#1); 7801#L167-1 assume !(0 != main_~p8~0#1); 7794#L172-1 assume !(0 != main_~p9~0#1); 7791#L177-1 assume !(0 != main_~p10~0#1); 7787#L182-1 assume !(0 != main_~p11~0#1); 7781#L187-1 assume !(0 != main_~p12~0#1); 7768#L192-1 assume !(0 != main_~p13~0#1); 7383#L197-1 [2023-11-21 20:59:01,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2023-11-21 20:59:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555463651] [2023-11-21 20:59:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:01,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:01,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:01,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1574994763, now seen corresponding path program 1 times [2023-11-21 20:59:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349613428] [2023-11-21 20:59:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:01,168 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 20:59:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349613428] [2023-11-21 20:59:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349613428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858314188] [2023-11-21 20:59:01,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:01,172 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:01,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:01,176 INFO L87 Difference]: Start difference. First operand 2434 states and 3714 transitions. cyclomatic complexity: 1344 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:01,220 INFO L93 Difference]: Finished difference Result 4802 states and 7234 transitions. [2023-11-21 20:59:01,220 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4802 states and 7234 transitions. [2023-11-21 20:59:01,267 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4800 [2023-11-21 20:59:01,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4802 states to 4802 states and 7234 transitions. [2023-11-21 20:59:01,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4802 [2023-11-21 20:59:01,312 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4802 [2023-11-21 20:59:01,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4802 states and 7234 transitions. [2023-11-21 20:59:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:01,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2023-11-21 20:59:01,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states and 7234 transitions. [2023-11-21 20:59:01,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4802. [2023-11-21 20:59:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4802 states, 4802 states have (on average 1.5064556434818825) internal successors, (7234), 4801 states have internal predecessors, (7234), 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 20:59:01,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4802 states to 4802 states and 7234 transitions. [2023-11-21 20:59:01,526 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2023-11-21 20:59:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:01,528 INFO L428 stractBuchiCegarLoop]: Abstraction has 4802 states and 7234 transitions. [2023-11-21 20:59:01,529 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-21 20:59:01,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4802 states and 7234 transitions. [2023-11-21 20:59:01,565 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 4800 [2023-11-21 20:59:01,566 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:01,566 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:01,569 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:01,569 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] [2023-11-21 20:59:01,569 INFO L748 eck$LassoCheckResult]: Stem: 14670#$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(16, 2);call #Ultimate.allocInit(12, 3); 14624#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_~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_~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_~cond~0#1; 14625#L197-1 [2023-11-21 20:59:01,569 INFO L750 eck$LassoCheckResult]: Loop: 14625#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 15201#L52 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; 15200#L83 assume !(0 != main_~p1~0#1); 15065#L83-2 assume !(0 != main_~p2~0#1); 15067#L87-1 assume !(0 != main_~p3~0#1); 15047#L91-1 assume !(0 != main_~p4~0#1); 15048#L95-1 assume !(0 != main_~p5~0#1); 15232#L99-1 assume !(0 != main_~p6~0#1); 15230#L103-1 assume !(0 != main_~p7~0#1); 15227#L107-1 assume !(0 != main_~p8~0#1); 15225#L111-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 15223#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 15222#L119-1 assume !(0 != main_~p11~0#1); 15221#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 15219#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 15195#L131-1 assume !(0 != main_~p1~0#1); 15196#L137-1 assume !(0 != main_~p2~0#1); 15185#L142-1 assume !(0 != main_~p3~0#1); 15184#L147-1 assume !(0 != main_~p4~0#1); 15302#L152-1 assume !(0 != main_~p5~0#1); 15298#L157-1 assume !(0 != main_~p6~0#1); 15295#L162-1 assume !(0 != main_~p7~0#1); 15290#L167-1 assume !(0 != main_~p8~0#1); 15285#L172-1 assume !(0 != main_~p9~0#1); 15281#L177-1 assume !(0 != main_~p10~0#1); 15277#L182-1 assume !(0 != main_~p11~0#1); 15208#L187-1 assume !(0 != main_~p12~0#1); 15205#L192-1 assume !(0 != main_~p13~0#1); 14625#L197-1 [2023-11-21 20:59:01,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2023-11-21 20:59:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207915803] [2023-11-21 20:59:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:01,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:01,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:01,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1031028791, now seen corresponding path program 1 times [2023-11-21 20:59:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:01,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586899656] [2023-11-21 20:59:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:01,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:01,658 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 20:59:01,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:01,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586899656] [2023-11-21 20:59:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586899656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:01,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:01,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155040280] [2023-11-21 20:59:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:01,660 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:01,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:01,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:01,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:01,661 INFO L87 Difference]: Start difference. First operand 4802 states and 7234 transitions. cyclomatic complexity: 2560 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:01,737 INFO L93 Difference]: Finished difference Result 9474 states and 14082 transitions. [2023-11-21 20:59:01,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9474 states and 14082 transitions. [2023-11-21 20:59:01,804 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 9472 [2023-11-21 20:59:01,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9474 states to 9474 states and 14082 transitions. [2023-11-21 20:59:01,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9474 [2023-11-21 20:59:01,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9474 [2023-11-21 20:59:01,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9474 states and 14082 transitions. [2023-11-21 20:59:01,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:01,918 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2023-11-21 20:59:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9474 states and 14082 transitions. [2023-11-21 20:59:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9474 to 9474. [2023-11-21 20:59:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9474 states, 9474 states have (on average 1.486383787207093) internal successors, (14082), 9473 states have internal predecessors, (14082), 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 20:59:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 14082 transitions. [2023-11-21 20:59:02,243 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2023-11-21 20:59:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:02,246 INFO L428 stractBuchiCegarLoop]: Abstraction has 9474 states and 14082 transitions. [2023-11-21 20:59:02,246 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-21 20:59:02,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9474 states and 14082 transitions. [2023-11-21 20:59:02,285 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 9472 [2023-11-21 20:59:02,285 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:02,285 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:02,286 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:02,286 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] [2023-11-21 20:59:02,286 INFO L748 eck$LassoCheckResult]: Stem: 28956#$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(16, 2);call #Ultimate.allocInit(12, 3); 28906#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_~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_~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_~cond~0#1; 28907#L197-1 [2023-11-21 20:59:02,288 INFO L750 eck$LassoCheckResult]: Loop: 28907#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 29452#L52 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; 29445#L83 assume !(0 != main_~p1~0#1); 29438#L83-2 assume !(0 != main_~p2~0#1); 29439#L87-1 assume !(0 != main_~p3~0#1); 29544#L91-1 assume !(0 != main_~p4~0#1); 29542#L95-1 assume !(0 != main_~p5~0#1); 29540#L99-1 assume !(0 != main_~p6~0#1); 29419#L103-1 assume !(0 != main_~p7~0#1); 29421#L107-1 assume !(0 != main_~p8~0#1); 29407#L111-1 assume !(0 != main_~p9~0#1); 29409#L115-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 29398#L119-1 assume !(0 != main_~p11~0#1); 29399#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 29390#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 29391#L131-1 assume !(0 != main_~p1~0#1); 29526#L137-1 assume !(0 != main_~p2~0#1); 29524#L142-1 assume !(0 != main_~p3~0#1); 29521#L147-1 assume !(0 != main_~p4~0#1); 29519#L152-1 assume !(0 != main_~p5~0#1); 29517#L157-1 assume !(0 != main_~p6~0#1); 29515#L162-1 assume !(0 != main_~p7~0#1); 29508#L167-1 assume !(0 != main_~p8~0#1); 29502#L172-1 assume !(0 != main_~p9~0#1); 29493#L177-1 assume !(0 != main_~p10~0#1); 29485#L182-1 assume !(0 != main_~p11~0#1); 29468#L187-1 assume !(0 != main_~p12~0#1); 29461#L192-1 assume !(0 != main_~p13~0#1); 28907#L197-1 [2023-11-21 20:59:02,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:02,289 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2023-11-21 20:59:02,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:02,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624830012] [2023-11-21 20:59:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:02,296 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:02,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:02,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -963115915, now seen corresponding path program 1 times [2023-11-21 20:59:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:02,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570364681] [2023-11-21 20:59:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:02,352 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 20:59:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570364681] [2023-11-21 20:59:02,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570364681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:02,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:02,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335060526] [2023-11-21 20:59:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:02,354 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:02,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:02,355 INFO L87 Difference]: Start difference. First operand 9474 states and 14082 transitions. cyclomatic complexity: 4864 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:02,545 INFO L93 Difference]: Finished difference Result 18690 states and 27394 transitions. [2023-11-21 20:59:02,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18690 states and 27394 transitions. [2023-11-21 20:59:02,671 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 18688 [2023-11-21 20:59:02,891 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18690 states to 18690 states and 27394 transitions. [2023-11-21 20:59:02,891 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18690 [2023-11-21 20:59:02,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18690 [2023-11-21 20:59:02,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18690 states and 27394 transitions. [2023-11-21 20:59:02,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:02,930 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2023-11-21 20:59:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18690 states and 27394 transitions. [2023-11-21 20:59:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18690 to 18690. [2023-11-21 20:59:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18690 states, 18690 states have (on average 1.4657035848047084) internal successors, (27394), 18689 states have internal predecessors, (27394), 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 20:59:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18690 states to 18690 states and 27394 transitions. [2023-11-21 20:59:03,601 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2023-11-21 20:59:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:03,603 INFO L428 stractBuchiCegarLoop]: Abstraction has 18690 states and 27394 transitions. [2023-11-21 20:59:03,603 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-21 20:59:03,603 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18690 states and 27394 transitions. [2023-11-21 20:59:03,669 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 18688 [2023-11-21 20:59:03,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:03,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:03,671 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:03,671 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] [2023-11-21 20:59:03,672 INFO L748 eck$LassoCheckResult]: Stem: 57125#$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(16, 2);call #Ultimate.allocInit(12, 3); 57076#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_~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_~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_~cond~0#1; 57077#L197-1 [2023-11-21 20:59:03,672 INFO L750 eck$LassoCheckResult]: Loop: 57077#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 57241#L52 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; 57237#L83 assume !(0 != main_~p1~0#1); 57234#L83-2 assume !(0 != main_~p2~0#1); 57231#L87-1 assume !(0 != main_~p3~0#1); 57227#L91-1 assume !(0 != main_~p4~0#1); 57223#L95-1 assume !(0 != main_~p5~0#1); 57219#L99-1 assume !(0 != main_~p6~0#1); 57214#L103-1 assume !(0 != main_~p7~0#1); 57210#L107-1 assume !(0 != main_~p8~0#1); 57183#L111-1 assume !(0 != main_~p9~0#1); 57185#L115-1 assume !(0 != main_~p10~0#1); 57623#L119-1 assume !(0 != main_~p11~0#1); 57639#L123-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 57636#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 57600#L131-1 assume !(0 != main_~p1~0#1); 57597#L137-1 assume !(0 != main_~p2~0#1); 57555#L142-1 assume !(0 != main_~p3~0#1); 57475#L147-1 assume !(0 != main_~p4~0#1); 57472#L152-1 assume !(0 != main_~p5~0#1); 57469#L157-1 assume !(0 != main_~p6~0#1); 57466#L162-1 assume !(0 != main_~p7~0#1); 57464#L167-1 assume !(0 != main_~p8~0#1); 57461#L172-1 assume !(0 != main_~p9~0#1); 57456#L177-1 assume !(0 != main_~p10~0#1); 57453#L182-1 assume !(0 != main_~p11~0#1); 57247#L187-1 assume !(0 != main_~p12~0#1); 57246#L192-1 assume !(0 != main_~p13~0#1); 57077#L197-1 [2023-11-21 20:59:03,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2023-11-21 20:59:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:03,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724893492] [2023-11-21 20:59:03,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:03,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:03,679 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:03,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:03,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1743503479, now seen corresponding path program 1 times [2023-11-21 20:59:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957213446] [2023-11-21 20:59:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:03,729 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 20:59:03,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:03,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957213446] [2023-11-21 20:59:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957213446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:03,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245559283] [2023-11-21 20:59:03,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:03,735 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:03,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:03,738 INFO L87 Difference]: Start difference. First operand 18690 states and 27394 transitions. cyclomatic complexity: 9216 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:03,906 INFO L93 Difference]: Finished difference Result 36866 states and 53250 transitions. [2023-11-21 20:59:03,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36866 states and 53250 transitions. [2023-11-21 20:59:04,345 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 36864 [2023-11-21 20:59:04,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36866 states to 36866 states and 53250 transitions. [2023-11-21 20:59:04,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36866 [2023-11-21 20:59:04,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36866 [2023-11-21 20:59:04,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36866 states and 53250 transitions. [2023-11-21 20:59:04,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:04,585 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2023-11-21 20:59:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36866 states and 53250 transitions. [2023-11-21 20:59:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36866 to 36866. [2023-11-21 20:59:05,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36866 states, 36866 states have (on average 1.4444203330982477) internal successors, (53250), 36865 states have internal predecessors, (53250), 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 20:59:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36866 states to 36866 states and 53250 transitions. [2023-11-21 20:59:05,328 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2023-11-21 20:59:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:05,329 INFO L428 stractBuchiCegarLoop]: Abstraction has 36866 states and 53250 transitions. [2023-11-21 20:59:05,329 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-21 20:59:05,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36866 states and 53250 transitions. [2023-11-21 20:59:05,463 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 36864 [2023-11-21 20:59:05,463 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:05,463 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:05,464 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:05,464 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] [2023-11-21 20:59:05,465 INFO L748 eck$LassoCheckResult]: Stem: 112688#$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(16, 2);call #Ultimate.allocInit(12, 3); 112638#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_~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_~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_~cond~0#1; 112639#L197-1 [2023-11-21 20:59:05,465 INFO L750 eck$LassoCheckResult]: Loop: 112639#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 112884#L52 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; 112880#L83 assume !(0 != main_~p1~0#1); 112876#L83-2 assume !(0 != main_~p2~0#1); 112874#L87-1 assume !(0 != main_~p3~0#1); 112870#L91-1 assume !(0 != main_~p4~0#1); 112866#L95-1 assume !(0 != main_~p5~0#1); 112862#L99-1 assume !(0 != main_~p6~0#1); 112855#L103-1 assume !(0 != main_~p7~0#1); 112853#L107-1 assume !(0 != main_~p8~0#1); 112854#L111-1 assume !(0 != main_~p9~0#1); 112939#L115-1 assume !(0 != main_~p10~0#1); 112937#L119-1 assume !(0 != main_~p11~0#1); 112935#L123-1 assume !(0 != main_~p12~0#1); 112933#L127-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 112929#L131-1 assume !(0 != main_~p1~0#1); 112925#L137-1 assume !(0 != main_~p2~0#1); 112922#L142-1 assume !(0 != main_~p3~0#1); 112917#L147-1 assume !(0 != main_~p4~0#1); 112913#L152-1 assume !(0 != main_~p5~0#1); 112909#L157-1 assume !(0 != main_~p6~0#1); 112905#L162-1 assume !(0 != main_~p7~0#1); 112901#L167-1 assume !(0 != main_~p8~0#1); 112897#L172-1 assume !(0 != main_~p9~0#1); 112828#L177-1 assume !(0 != main_~p10~0#1); 112824#L182-1 assume !(0 != main_~p11~0#1); 112823#L187-1 assume !(0 != main_~p12~0#1); 112888#L192-1 assume !(0 != main_~p13~0#1); 112639#L197-1 [2023-11-21 20:59:05,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:05,466 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2023-11-21 20:59:05,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:05,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673821457] [2023-11-21 20:59:05,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:05,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:05,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:05,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:05,477 INFO L85 PathProgramCache]: Analyzing trace with hash 463639801, now seen corresponding path program 1 times [2023-11-21 20:59:05,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:05,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220675835] [2023-11-21 20:59:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:05,710 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 20:59:05,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220675835] [2023-11-21 20:59:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220675835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:05,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:05,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:05,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666248875] [2023-11-21 20:59:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:05,724 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 20:59:05,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:05,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:05,725 INFO L87 Difference]: Start difference. First operand 36866 states and 53250 transitions. cyclomatic complexity: 17408 Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:06,166 INFO L93 Difference]: Finished difference Result 72706 states and 103426 transitions. [2023-11-21 20:59:06,166 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72706 states and 103426 transitions. [2023-11-21 20:59:06,695 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 72704 [2023-11-21 20:59:06,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72706 states to 72706 states and 103426 transitions. [2023-11-21 20:59:06,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72706 [2023-11-21 20:59:07,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72706 [2023-11-21 20:59:07,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72706 states and 103426 transitions. [2023-11-21 20:59:07,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:07,253 INFO L218 hiAutomatonCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2023-11-21 20:59:07,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72706 states and 103426 transitions. [2023-11-21 20:59:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72706 to 72706. [2023-11-21 20:59:08,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72706 states, 72706 states have (on average 1.4225235881495337) internal successors, (103426), 72705 states have internal predecessors, (103426), 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 20:59:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72706 states to 72706 states and 103426 transitions. [2023-11-21 20:59:08,551 INFO L240 hiAutomatonCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2023-11-21 20:59:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:08,552 INFO L428 stractBuchiCegarLoop]: Abstraction has 72706 states and 103426 transitions. [2023-11-21 20:59:08,552 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-21 20:59:08,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72706 states and 103426 transitions. [2023-11-21 20:59:08,813 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 72704 [2023-11-21 20:59:08,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 20:59:08,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 20:59:08,814 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 20:59:08,814 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] [2023-11-21 20:59:08,815 INFO L748 eck$LassoCheckResult]: Stem: 222269#$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(16, 2);call #Ultimate.allocInit(12, 3); 222216#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_~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_~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_~cond~0#1; 222217#L197-1 [2023-11-21 20:59:08,815 INFO L750 eck$LassoCheckResult]: Loop: 222217#L197-1 assume !false;havoc main_#t~nondet17#1;main_~cond~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1; 222920#L52 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; 222921#L83 assume !(0 != main_~p1~0#1); 222914#L83-2 assume !(0 != main_~p2~0#1); 222916#L87-1 assume !(0 != main_~p3~0#1); 222909#L91-1 assume !(0 != main_~p4~0#1); 222911#L95-1 assume !(0 != main_~p5~0#1); 222973#L99-1 assume !(0 != main_~p6~0#1); 222969#L103-1 assume !(0 != main_~p7~0#1); 222965#L107-1 assume !(0 != main_~p8~0#1); 222962#L111-1 assume !(0 != main_~p9~0#1); 222963#L115-1 assume !(0 != main_~p10~0#1); 222768#L119-1 assume !(0 != main_~p11~0#1); 222769#L123-1 assume !(0 != main_~p12~0#1); 222752#L127-1 assume !(0 != main_~p13~0#1); 222754#L131-1 assume !(0 != main_~p1~0#1); 223183#L137-1 assume !(0 != main_~p2~0#1); 224211#L142-1 assume !(0 != main_~p3~0#1); 222443#L147-1 assume !(0 != main_~p4~0#1); 222445#L152-1 assume !(0 != main_~p5~0#1); 222860#L157-1 assume !(0 != main_~p6~0#1); 222861#L162-1 assume !(0 != main_~p7~0#1); 222849#L167-1 assume !(0 != main_~p8~0#1); 222850#L172-1 assume !(0 != main_~p9~0#1); 222935#L177-1 assume !(0 != main_~p10~0#1); 222931#L182-1 assume !(0 != main_~p11~0#1); 222930#L187-1 assume !(0 != main_~p12~0#1); 222924#L192-1 assume !(0 != main_~p13~0#1); 222217#L197-1 [2023-11-21 20:59:08,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2023-11-21 20:59:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:08,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629811221] [2023-11-21 20:59:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:08,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:08,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:08,828 INFO L85 PathProgramCache]: Analyzing trace with hash -547477449, now seen corresponding path program 1 times [2023-11-21 20:59:08,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:08,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116048725] [2023-11-21 20:59:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:08,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:08,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash 496424185, now seen corresponding path program 1 times [2023-11-21 20:59:08,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:08,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366915297] [2023-11-21 20:59:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:08,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:08,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:09,953 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:10,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 08:59:10 BoogieIcfgContainer [2023-11-21 20:59:10,011 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 20:59:10,011 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:59:10,011 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:59:10,012 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:59:10,012 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:59" (3/4) ... [2023-11-21 20:59:10,014 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 20:59:10,062 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 20:59:10,062 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:59:10,063 INFO L158 Benchmark]: Toolchain (without parser) took 11589.80ms. Allocated memory was 134.2MB in the beginning and 6.5GB in the end (delta: 6.4GB). Free memory was 73.8MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 516.9MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,063 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 134.2MB. Free memory was 97.9MB in the beginning and 97.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:10,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.75ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 73.4MB in the beginning and 136.1MB in the end (delta: -62.7MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.46ms. Allocated memory is still 165.7MB. Free memory was 136.1MB in the beginning and 134.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,065 INFO L158 Benchmark]: Boogie Preprocessor took 40.56ms. Allocated memory is still 165.7MB. Free memory was 134.1MB in the beginning and 132.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,065 INFO L158 Benchmark]: RCFGBuilder took 416.94ms. Allocated memory is still 165.7MB. Free memory was 132.1MB in the beginning and 117.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,066 INFO L158 Benchmark]: BuchiAutomizer took 10716.43ms. Allocated memory was 165.7MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 117.4MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 525.9MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,066 INFO L158 Benchmark]: Witness Printer took 51.03ms. Allocated memory is still 6.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:10,069 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 134.2MB. Free memory was 97.9MB in the beginning and 97.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 314.75ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 73.4MB in the beginning and 136.1MB in the end (delta: -62.7MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.46ms. Allocated memory is still 165.7MB. Free memory was 136.1MB in the beginning and 134.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.56ms. Allocated memory is still 165.7MB. Free memory was 134.1MB in the beginning and 132.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 416.94ms. Allocated memory is still 165.7MB. Free memory was 132.1MB in the beginning and 117.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 10716.43ms. Allocated memory was 165.7MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 117.4MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 525.9MB. Max. memory is 16.1GB. * Witness Printer took 51.03ms. Allocated memory is still 6.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 72706 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.6s and 12 iterations. TraceHistogramMax:1. Analysis of lassos took 2.5s. Construction of modules took 0.1s. Büchi inclusion checks took 7.3s. Highest rank in rank-based complementation 0. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 3.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 2.2s 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, 587 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 587 mSDsluCounter, 1840 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 708 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1132 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: 50]: 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; [L48] int cond; Loop: [L50] COND TRUE 1 [L51] cond = __VERIFIER_nondet_int() [L52] COND FALSE !(cond == 0) [L55] lk1 = 0 [L57] lk2 = 0 [L59] lk3 = 0 [L61] lk4 = 0 [L63] lk5 = 0 [L65] lk6 = 0 [L67] lk7 = 0 [L69] lk8 = 0 [L71] lk9 = 0 [L73] lk10 = 0 [L75] lk11 = 0 [L77] lk12 = 0 [L79] lk13 = 0 [L83] COND FALSE !(p1 != 0) [L87] COND FALSE !(p2 != 0) [L91] COND FALSE !(p3 != 0) [L95] COND FALSE !(p4 != 0) [L99] COND FALSE !(p5 != 0) [L103] COND FALSE !(p6 != 0) [L107] COND FALSE !(p7 != 0) [L111] COND FALSE !(p8 != 0) [L115] COND FALSE !(p9 != 0) [L119] COND FALSE !(p10 != 0) [L123] COND FALSE !(p11 != 0) [L127] COND FALSE !(p12 != 0) [L131] COND FALSE !(p13 != 0) [L137] COND FALSE !(p1 != 0) [L142] COND FALSE !(p2 != 0) [L147] COND FALSE !(p3 != 0) [L152] COND FALSE !(p4 != 0) [L157] COND FALSE !(p5 != 0) [L162] COND FALSE !(p6 != 0) [L167] COND FALSE !(p7 != 0) [L172] COND FALSE !(p8 != 0) [L177] COND FALSE !(p9 != 0) [L182] COND FALSE !(p10 != 0) [L187] COND FALSE !(p11 != 0) [L192] COND FALSE !(p12 != 0) [L197] COND FALSE !(p13 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 50]: 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; [L48] int cond; Loop: [L50] COND TRUE 1 [L51] cond = __VERIFIER_nondet_int() [L52] COND FALSE !(cond == 0) [L55] lk1 = 0 [L57] lk2 = 0 [L59] lk3 = 0 [L61] lk4 = 0 [L63] lk5 = 0 [L65] lk6 = 0 [L67] lk7 = 0 [L69] lk8 = 0 [L71] lk9 = 0 [L73] lk10 = 0 [L75] lk11 = 0 [L77] lk12 = 0 [L79] lk13 = 0 [L83] COND FALSE !(p1 != 0) [L87] COND FALSE !(p2 != 0) [L91] COND FALSE !(p3 != 0) [L95] COND FALSE !(p4 != 0) [L99] COND FALSE !(p5 != 0) [L103] COND FALSE !(p6 != 0) [L107] COND FALSE !(p7 != 0) [L111] COND FALSE !(p8 != 0) [L115] COND FALSE !(p9 != 0) [L119] COND FALSE !(p10 != 0) [L123] COND FALSE !(p11 != 0) [L127] COND FALSE !(p12 != 0) [L131] COND FALSE !(p13 != 0) [L137] COND FALSE !(p1 != 0) [L142] COND FALSE !(p2 != 0) [L147] COND FALSE !(p3 != 0) [L152] COND FALSE !(p4 != 0) [L157] COND FALSE !(p5 != 0) [L162] COND FALSE !(p6 != 0) [L167] COND FALSE !(p7 != 0) [L172] COND FALSE !(p8 != 0) [L177] COND FALSE !(p9 != 0) [L182] COND FALSE !(p10 != 0) [L187] COND FALSE !(p11 != 0) [L192] COND FALSE !(p12 != 0) [L197] COND FALSE !(p13 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 20:59:10,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5f0c3ec-77cb-472d-9005-4eb8917b796c/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)