./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:25:37,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:25:37,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:25:37,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:25:37,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:25:37,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:25:37,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:25:37,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:25:37,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:25:37,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:25:37,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:25:37,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:25:37,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:25:37,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:25:37,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:25:37,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:25:37,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:25:37,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:25:37,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:25:37,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:25:37,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:25:37,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:25:37,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:25:37,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:25:37,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:25:37,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:25:37,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:25:37,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:25:37,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:25:37,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:25:37,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:25:37,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:25:37,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:25:37,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:25:37,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:25:37,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:25:37,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:25:37,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:25:37,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:25:37,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:25:37,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:25:37,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-10-17 10:25:37,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:25:37,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:25:37,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:25:37,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:25:37,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:25:37,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:25:37,979 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:25:37,980 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:25:37,980 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:25:37,980 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:25:37,980 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:25:37,980 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:25:37,981 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:25:37,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:25:37,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:25:37,981 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:25:37,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:25:37,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:25:37,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:25:37,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:25:37,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:25:37,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:25:37,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:25:37,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:25:37,983 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:25:37,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:25:37,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:25:37,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:25:37,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:25:37,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:25:37,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:25:37,985 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:25:37,986 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 [2022-10-17 10:25:38,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:25:38,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:25:38,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:25:38,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:25:38,292 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:25:38,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2022-10-17 10:25:38,395 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/data/1621131fb/937b242500374bb6ad46898267f2be2d/FLAG20e67957a [2022-10-17 10:25:38,862 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:25:38,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2022-10-17 10:25:38,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/data/1621131fb/937b242500374bb6ad46898267f2be2d/FLAG20e67957a [2022-10-17 10:25:39,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/data/1621131fb/937b242500374bb6ad46898267f2be2d [2022-10-17 10:25:39,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:25:39,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:25:39,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:39,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:25:39,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:25:39,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b39eab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39, skipping insertion in model container [2022-10-17 10:25:39,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:25:39,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:25:39,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2022-10-17 10:25:39,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:39,661 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:25:39,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2022-10-17 10:25:39,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:25:39,737 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:25:39,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39 WrapperNode [2022-10-17 10:25:39,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:25:39,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:39,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:25:39,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:25:39,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,811 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 260 [2022-10-17 10:25:39,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:25:39,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:25:39,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:25:39,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:25:39,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:25:39,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:25:39,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:25:39,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:25:39,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (1/1) ... [2022-10-17 10:25:39,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:25:39,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:25:39,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:25:39,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:25:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:25:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:25:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:25:39,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:25:40,075 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:25:40,077 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:25:40,543 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:25:40,552 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:25:40,552 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:25:40,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:40 BoogieIcfgContainer [2022-10-17 10:25:40,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:25:40,556 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:25:40,556 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:25:40,561 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:25:40,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:25:40,562 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:25:39" (1/3) ... [2022-10-17 10:25:40,563 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@453a5ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:25:40, skipping insertion in model container [2022-10-17 10:25:40,563 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:25:40,563 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:25:39" (2/3) ... [2022-10-17 10:25:40,564 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@453a5ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:25:40, skipping insertion in model container [2022-10-17 10:25:40,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:25:40,564 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:25:40" (3/3) ... [2022-10-17 10:25:40,566 INFO L332 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2022-10-17 10:25:40,623 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:25:40,623 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:25:40,623 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:25:40,623 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:25:40,624 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:25:40,624 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:25:40,624 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:25:40,624 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:25:40,629 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:40,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2022-10-17 10:25:40,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:25:40,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:25:40,685 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:40,686 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] [2022-10-17 10:25:40,686 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:25:40,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:40,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2022-10-17 10:25:40,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:25:40,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:25:40,697 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:40,697 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] [2022-10-17 10:25:40,705 INFO L748 eck$LassoCheckResult]: Stem: 59#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 47#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 60#L163true assume !(0 == ~r1~0);init_~tmp~0#1 := 0; 24#L163-1true init_#res#1 := init_~tmp~0#1; 58#L256true main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 70#L312true assume !(0 == main_~i2~0#1); 16#L312-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 10#L322-2true [2022-10-17 10:25:40,707 INFO L750 eck$LassoCheckResult]: Loop: 10#L322-2true assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 7#L61true assume !(0 != ~mode1~0 % 256); 14#L77true assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite4#1 := ~send1~0; 51#L77-2true ~p1_new~0 := (if node1_#t~ite4#1 % 256 <= 127 then node1_#t~ite4#1 % 256 else node1_#t~ite4#1 % 256 - 256);havoc node1_#t~ite4#1;~mode1~0 := 1; 57#L61-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 8#L89true assume !(0 != ~mode2~0 % 256); 56#L102true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 54#L102-2true ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 20#L89-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 61#L114true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 12#L117true assume !(node3_~m3~0#1 != ~nomsg~0); 33#L117-1true ~mode3~0 := 0; 48#L114-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 36#L139true assume !(0 != ~mode4~0 % 256); 39#L152true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite7#1 := ~send4~0; 22#L152-2true ~p4_new~0 := (if node4_#t~ite7#1 % 256 <= 127 then node4_#t~ite7#1 % 256 else node4_#t~ite7#1 % 256 - 256);havoc node4_#t~ite7#1;~mode4~0 := 1; 21#L139-2true assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 72#L264true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 19#L264-1true check_#res#1 := check_~tmp~1#1; 73#L284true main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 25#L349true assume !(0 == assert_~arg#1 % 256); 38#L344true assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 10#L322-2true [2022-10-17 10:25:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1932780748, now seen corresponding path program 1 times [2022-10-17 10:25:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:40,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259174722] [2022-10-17 10:25:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259174722] [2022-10-17 10:25:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259174722] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:41,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:41,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436991622] [2022-10-17 10:25:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:41,123 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-10-17 10:25:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:41,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1135428887, now seen corresponding path program 1 times [2022-10-17 10:25:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:41,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448031194] [2022-10-17 10:25:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:41,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:41,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448031194] [2022-10-17 10:25:41,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448031194] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:41,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:41,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604846566] [2022-10-17 10:25:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:41,603 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:25:41,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:41,640 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:41,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:41,794 INFO L93 Difference]: Finished difference Result 122 states and 194 transitions. [2022-10-17 10:25:41,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 194 transitions. [2022-10-17 10:25:41,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2022-10-17 10:25:41,823 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 113 states and 163 transitions. [2022-10-17 10:25:41,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-10-17 10:25:41,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-10-17 10:25:41,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 163 transitions. [2022-10-17 10:25:41,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:41,827 INFO L218 hiAutomatonCegarLoop]: Abstraction has 113 states and 163 transitions. [2022-10-17 10:25:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 163 transitions. [2022-10-17 10:25:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2022-10-17 10:25:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.352112676056338) internal successors, (96), 70 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2022-10-17 10:25:41,863 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 96 transitions. [2022-10-17 10:25:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:25:41,868 INFO L428 stractBuchiCegarLoop]: Abstraction has 71 states and 96 transitions. [2022-10-17 10:25:41,868 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:25:41,869 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 96 transitions. [2022-10-17 10:25:41,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2022-10-17 10:25:41,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:25:41,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:25:41,873 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:41,873 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] [2022-10-17 10:25:41,873 INFO L748 eck$LassoCheckResult]: Stem: 281#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 273#L163 assume 0 == ~r1~0; 251#L164 assume ~id1~0 >= 0; 238#L165 assume 0 == ~st1~0; 239#L166 assume ~send1~0 == ~id1~0; 256#L167 assume 0 == ~mode1~0 % 256; 230#L168 assume ~id2~0 >= 0; 231#L169 assume 0 == ~st2~0; 285#L170 assume ~send2~0 == ~id2~0; 276#L171 assume 0 == ~mode2~0 % 256; 274#L172 assume ~id3~0 >= 0; 275#L173 assume 0 == ~st3~0; 284#L174 assume ~send3~0 == ~id3~0; 221#L175 assume 0 == ~mode3~0 % 256; 222#L176 assume ~id4~0 >= 0; 278#L177 assume 0 == ~st4~0; 262#L178 assume ~send4~0 == ~id4~0; 263#L179 assume 0 == ~mode4~0 % 256; 216#L180 assume ~id1~0 != ~id2~0; 217#L181 assume ~id1~0 != ~id3~0; 259#L182 assume ~id1~0 != ~id4~0; 260#L183 assume ~id2~0 != ~id3~0; 243#L184 assume ~id2~0 != ~id4~0; 244#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 252#L163-1 init_#res#1 := init_~tmp~0#1; 253#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 280#L312 assume !(0 == main_~i2~0#1); 240#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 229#L322-2 [2022-10-17 10:25:41,874 INFO L750 eck$LassoCheckResult]: Loop: 229#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 223#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 224#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 242#L65-1 ~mode1~0 := 0; 277#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 226#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 227#L92 assume !(node2_~m2~0#1 != ~nomsg~0); 269#L92-1 ~mode2~0 := 0; 247#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 248#L114 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 232#L117 assume !(node3_~m3~0#1 != ~nomsg~0); 233#L117-1 ~mode3~0 := 0; 261#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 264#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 265#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 235#L142-1 ~mode4~0 := 0; 236#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 249#L264 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 245#L264-1 check_#res#1 := check_~tmp~1#1; 246#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 254#L349 assume !(0 == assert_~arg#1 % 256); 255#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 229#L322-2 [2022-10-17 10:25:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 1 times [2022-10-17 10:25:41,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256148821] [2022-10-17 10:25:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:41,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:41,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:41,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:41,949 INFO L85 PathProgramCache]: Analyzing trace with hash -843208267, now seen corresponding path program 1 times [2022-10-17 10:25:41,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:41,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504569000] [2022-10-17 10:25:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:42,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:42,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504569000] [2022-10-17 10:25:42,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504569000] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:42,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:42,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:25:42,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273066232] [2022-10-17 10:25:42,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:42,098 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:25:42,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:42,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:25:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:25:42,099 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. cyclomatic complexity: 26 Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:42,145 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-10-17 10:25:42,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 98 transitions. [2022-10-17 10:25:42,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2022-10-17 10:25:42,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 93 transitions. [2022-10-17 10:25:42,149 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2022-10-17 10:25:42,149 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2022-10-17 10:25:42,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 93 transitions. [2022-10-17 10:25:42,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:42,150 INFO L218 hiAutomatonCegarLoop]: Abstraction has 71 states and 93 transitions. [2022-10-17 10:25:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 93 transitions. [2022-10-17 10:25:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-10-17 10:25:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2022-10-17 10:25:42,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 93 transitions. [2022-10-17 10:25:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:25:42,158 INFO L428 stractBuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2022-10-17 10:25:42,158 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:25:42,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 93 transitions. [2022-10-17 10:25:42,159 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2022-10-17 10:25:42,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:25:42,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:25:42,161 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:42,161 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:42,162 INFO L748 eck$LassoCheckResult]: Stem: 438#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 429#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 430#L163 assume 0 == ~r1~0; 408#L164 assume ~id1~0 >= 0; 395#L165 assume 0 == ~st1~0; 396#L166 assume ~send1~0 == ~id1~0; 413#L167 assume 0 == ~mode1~0 % 256; 387#L168 assume ~id2~0 >= 0; 388#L169 assume 0 == ~st2~0; 442#L170 assume ~send2~0 == ~id2~0; 433#L171 assume 0 == ~mode2~0 % 256; 431#L172 assume ~id3~0 >= 0; 432#L173 assume 0 == ~st3~0; 441#L174 assume ~send3~0 == ~id3~0; 378#L175 assume 0 == ~mode3~0 % 256; 379#L176 assume ~id4~0 >= 0; 435#L177 assume 0 == ~st4~0; 419#L178 assume ~send4~0 == ~id4~0; 420#L179 assume 0 == ~mode4~0 % 256; 373#L180 assume ~id1~0 != ~id2~0; 374#L181 assume ~id1~0 != ~id3~0; 416#L182 assume ~id1~0 != ~id4~0; 417#L183 assume ~id2~0 != ~id3~0; 400#L184 assume ~id2~0 != ~id4~0; 401#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 409#L163-1 init_#res#1 := init_~tmp~0#1; 410#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 437#L312 assume !(0 == main_~i2~0#1); 397#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 386#L322-2 [2022-10-17 10:25:42,162 INFO L750 eck$LassoCheckResult]: Loop: 386#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 380#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 381#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 399#L65-1 ~mode1~0 := 0; 434#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 383#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 384#L92 assume !(node2_~m2~0#1 != ~nomsg~0); 426#L92-1 ~mode2~0 := 0; 404#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 405#L114 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 389#L117 assume !(node3_~m3~0#1 != ~nomsg~0); 390#L117-1 ~mode3~0 := 0; 418#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 421#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 422#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 392#L142-1 ~mode4~0 := 0; 393#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 406#L264 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 375#L265 assume ~r1~0 >= 4; 376#L269 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 402#L264-1 check_#res#1 := check_~tmp~1#1; 403#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 411#L349 assume !(0 == assert_~arg#1 % 256); 412#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 386#L322-2 [2022-10-17 10:25:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 2 times [2022-10-17 10:25:42,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217581313] [2022-10-17 10:25:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:42,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,202 INFO L85 PathProgramCache]: Analyzing trace with hash 9853125, now seen corresponding path program 1 times [2022-10-17 10:25:42,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408500949] [2022-10-17 10:25:42,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:42,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:42,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408500949] [2022-10-17 10:25:42,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408500949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:42,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:42,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:25:42,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303111335] [2022-10-17 10:25:42,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:42,232 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-10-17 10:25:42,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:25:42,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:25:42,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:25:42,233 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. cyclomatic complexity: 23 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:25:42,257 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2022-10-17 10:25:42,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 146 transitions. [2022-10-17 10:25:42,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2022-10-17 10:25:42,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 107 states and 146 transitions. [2022-10-17 10:25:42,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-10-17 10:25:42,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-10-17 10:25:42,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 146 transitions. [2022-10-17 10:25:42,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:25:42,262 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 146 transitions. [2022-10-17 10:25:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 146 transitions. [2022-10-17 10:25:42,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-10-17 10:25:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:25:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2022-10-17 10:25:42,270 INFO L240 hiAutomatonCegarLoop]: Abstraction has 107 states and 146 transitions. [2022-10-17 10:25:42,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:25:42,272 INFO L428 stractBuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2022-10-17 10:25:42,272 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:25:42,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 107 states and 146 transitions. [2022-10-17 10:25:42,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2022-10-17 10:25:42,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:25:42,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:25:42,275 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:25:42,275 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] [2022-10-17 10:25:42,275 INFO L748 eck$LassoCheckResult]: Stem: 624#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 616#L163 assume 0 == ~r1~0; 594#L164 assume ~id1~0 >= 0; 578#L165 assume 0 == ~st1~0; 579#L166 assume ~send1~0 == ~id1~0; 598#L167 assume 0 == ~mode1~0 % 256; 570#L168 assume ~id2~0 >= 0; 571#L169 assume 0 == ~st2~0; 629#L170 assume ~send2~0 == ~id2~0; 619#L171 assume 0 == ~mode2~0 % 256; 617#L172 assume ~id3~0 >= 0; 618#L173 assume 0 == ~st3~0; 628#L174 assume ~send3~0 == ~id3~0; 567#L175 assume 0 == ~mode3~0 % 256; 568#L176 assume ~id4~0 >= 0; 622#L177 assume 0 == ~st4~0; 605#L178 assume ~send4~0 == ~id4~0; 606#L179 assume 0 == ~mode4~0 % 256; 557#L180 assume ~id1~0 != ~id2~0; 558#L181 assume ~id1~0 != ~id3~0; 602#L182 assume ~id1~0 != ~id4~0; 604#L183 assume ~id2~0 != ~id3~0; 586#L184 assume ~id2~0 != ~id4~0; 587#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 595#L163-1 init_#res#1 := init_~tmp~0#1; 596#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 623#L312 assume !(0 == main_~i2~0#1); 580#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 581#L322-2 [2022-10-17 10:25:42,276 INFO L750 eck$LassoCheckResult]: Loop: 581#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 659#L61 assume !(0 != ~mode1~0 % 256); 658#L77 assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite4#1 := ~send1~0; 657#L77-2 ~p1_new~0 := (if node1_#t~ite4#1 % 256 <= 127 then node1_#t~ite4#1 % 256 else node1_#t~ite4#1 % 256 - 256);havoc node1_#t~ite4#1;~mode1~0 := 1; 627#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 656#L89 assume !(0 != ~mode2~0 % 256); 652#L102 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 651#L102-2 ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 649#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 647#L114 assume !(0 != ~mode3~0 % 256); 646#L127 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite6#1 := ~send3~0; 645#L127-2 ~p3_new~0 := (if node3_#t~ite6#1 % 256 <= 127 then node3_#t~ite6#1 % 256 else node3_#t~ite6#1 % 256 - 256);havoc node3_#t~ite6#1;~mode3~0 := 1; 643#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 642#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 640#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 637#L142-1 ~mode4~0 := 0; 635#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 634#L264 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 633#L265 assume !(~r1~0 >= 4); 599#L268 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 600#L269 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 584#L264-1 check_#res#1 := check_~tmp~1#1; 585#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 632#L349 assume !(0 == assert_~arg#1 % 256); 660#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 581#L322-2 [2022-10-17 10:25:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 3 times [2022-10-17 10:25:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875702367] [2022-10-17 10:25:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,311 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1926820423, now seen corresponding path program 1 times [2022-10-17 10:25:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056669961] [2022-10-17 10:25:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:25:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:25:42,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:25:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:25:42,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1410036755, now seen corresponding path program 1 times [2022-10-17 10:25:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:25:42,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379205970] [2022-10-17 10:25:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:25:42,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:25:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:25:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:25:42,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:25:42,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379205970] [2022-10-17 10:25:42,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379205970] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:25:42,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:25:42,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:25:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803890471] [2022-10-17 10:25:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:25:43,667 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:25:43,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:25:43,674 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:25:43,674 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:25:43,674 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:25:43,674 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:25:43,674 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:25:43,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:25:43,675 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2022-10-17 10:25:43,675 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:25:43,675 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:25:43,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,711 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,716 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,726 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,732 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,742 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,748 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,753 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,755 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,763 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:43,975 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:25:44,656 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2022-10-17 10:26:07,532 WARN L233 SmtUtils]: Spent 22.70s on a formula simplification. DAG size of input: 325 DAG size of output: 173 (called from [L 68] de.uni_freiburg.informatik.ultimate.icfgtransformer.transformulatransformers.SimplifyPreprocessor.process) [2022-10-17 10:26:07,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:26:07,619 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:26:07,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:07,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:07,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:07,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:07,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:07,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:26:07,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:26:07,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post27#1=0} Honda state: {ULTIMATE.start_main_#t~post27#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:26:07,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:07,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:07,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:07,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:26:07,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:26:07,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:07,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:07,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:07,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:07,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:26:07,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:26:07,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:26:07,915 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:26:07,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2feef988-6db7-449f-9368-f8d8d2e96227/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:26:07,926 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:26:07,926 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:26:07,926 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:26:07,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:26:07,926 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:26:07,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:07,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:26:07,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:26:07,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2022-10-17 10:26:07,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:26:07,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:26:07,932 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,946 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,949 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,955 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,975 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:07,983 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,259 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,265 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,268 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,274 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,281 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:26:08,941 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9