./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8 --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 11a9c91fdf6b42598924d9a4ae5a3db9994a05118a3b564c2bd29b9bad4177b0 --- 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-e04fb08 [2022-11-16 11:23:16,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:23:16,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:23:16,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:23:16,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:23:16,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:23:16,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:23:16,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:23:16,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:23:16,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:23:16,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:23:16,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:23:16,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:23:16,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:23:16,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:23:16,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:23:16,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:23:16,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:23:16,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:23:16,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:23:16,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:23:16,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:23:16,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:23:16,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:23:16,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:23:16,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:23:16,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:23:16,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:23:16,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:23:16,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:23:16,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:23:16,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:23:16,238 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:23:16,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:23:16,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:23:16,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:23:16,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:23:16,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:23:16,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:23:16,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:23:16,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:23:16,246 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 11:23:16,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:23:16,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:23:16,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:23:16,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:23:16,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:23:16,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:23:16,300 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:23:16,300 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:23:16,300 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:23:16,300 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:23:16,302 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:23:16,302 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:23:16,303 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:23:16,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:23:16,303 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:23:16,303 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:23:16,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:23:16,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:23:16,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:23:16,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:23:16,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:23:16,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:23:16,306 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:23:16,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:23:16,306 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:23:16,306 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:23:16,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:23:16,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:23:16,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:23:16,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:23:16,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:23:16,311 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:23:16,312 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_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11a9c91fdf6b42598924d9a4ae5a3db9994a05118a3b564c2bd29b9bad4177b0 [2022-11-16 11:23:16,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:23:16,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:23:16,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:23:16,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:23:16,710 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:23:16,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/locks/test_locks_15-1.c [2022-11-16 11:23:16,811 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/data/154f25f55/444f60bc94e64b41a2cb4ad3eba8655c/FLAGe0d4195ec [2022-11-16 11:23:17,377 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:23:17,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/sv-benchmarks/c/locks/test_locks_15-1.c [2022-11-16 11:23:17,394 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/data/154f25f55/444f60bc94e64b41a2cb4ad3eba8655c/FLAGe0d4195ec [2022-11-16 11:23:17,767 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/data/154f25f55/444f60bc94e64b41a2cb4ad3eba8655c [2022-11-16 11:23:17,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:23:17,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:23:17,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:17,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:23:17,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:23:17,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a2f7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:17, skipping insertion in model container [2022-11-16 11:23:17,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:23:17" (1/1) ... [2022-11-16 11:23:17,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:23:17,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:23:18,039 WARN L229 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_28ce8e64-ebdd-4bba-9f5d-d851748b1400/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2022-11-16 11:23:18,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:18,050 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:23:18,080 WARN L229 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_28ce8e64-ebdd-4bba-9f5d-d851748b1400/sv-benchmarks/c/locks/test_locks_15-1.c[5654,5667] [2022-11-16 11:23:18,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:23:18,095 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:23:18,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18 WrapperNode [2022-11-16 11:23:18,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:23:18,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:18,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:23:18,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:23:18,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,136 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 179 [2022-11-16 11:23:18,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:23:18,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:23:18,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:23:18,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:23:18,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,161 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:23:18,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:23:18,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:23:18,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:23:18,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (1/1) ... [2022-11-16 11:23:18,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:23:18,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:23:18,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:23:18,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:23:18,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:23:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:23:18,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:23:18,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:23:18,343 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:23:18,346 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:23:18,645 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:23:18,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:23:18,653 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:23:18,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:18 BoogieIcfgContainer [2022-11-16 11:23:18,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:23:18,657 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:23:18,657 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:23:18,678 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:23:18,679 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:23:18,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:23:17" (1/3) ... [2022-11-16 11:23:18,681 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:23:18, skipping insertion in model container [2022-11-16 11:23:18,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:23:18,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:23:18" (2/3) ... [2022-11-16 11:23:18,682 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@26413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:23:18, skipping insertion in model container [2022-11-16 11:23:18,682 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:23:18,682 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:18" (3/3) ... [2022-11-16 11:23:18,684 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_15-1.c [2022-11-16 11:23:18,789 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:23:18,789 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:23:18,790 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:23:18,790 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:23:18,790 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:23:18,790 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:23:18,790 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:23:18,790 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:23:18,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:18,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2022-11-16 11:23:18,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:18,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:18,823 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:18,824 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:18,824 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:23:18,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:18,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2022-11-16 11:23:18,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:18,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:18,830 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:18,830 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:18,839 INFO L748 eck$LassoCheckResult]: Stem: 42#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 21#L225-1true [2022-11-16 11:23:18,840 INFO L750 eck$LassoCheckResult]: Loop: 21#L225-1true assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 32#L58true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 28#L93true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 26#L93-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 13#L97-1true assume !(0 != main_~p3~0#1); 16#L101-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 49#L105-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 44#L109-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 12#L113-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 23#L117-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 30#L121-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 17#L125-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 35#L129-1true assume !(0 != main_~p11~0#1); 3#L133-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 6#L137-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 39#L141-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 54#L145-1true assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 47#L149-1true assume !(0 != main_~p1~0#1); 46#L155-1true assume 0 != main_~p2~0#1; 8#L161true assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 19#L160true assume !(0 != main_~p3~0#1); 11#L165-1true assume !(0 != main_~p4~0#1); 41#L170-1true assume !(0 != main_~p5~0#1); 45#L175-1true assume !(0 != main_~p6~0#1); 18#L180-1true assume !(0 != main_~p7~0#1); 38#L185-1true assume !(0 != main_~p8~0#1); 25#L190-1true assume !(0 != main_~p9~0#1); 40#L195-1true assume !(0 != main_~p10~0#1); 15#L200-1true assume !(0 != main_~p11~0#1); 43#L205-1true assume !(0 != main_~p12~0#1); 24#L210-1true assume !(0 != main_~p13~0#1); 5#L215-1true assume 0 != main_~p14~0#1; 14#L221true assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 53#L220true assume !(0 != main_~p15~0#1); 21#L225-1true [2022-11-16 11:23:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-16 11:23:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171488973] [2022-11-16 11:23:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:18,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:18,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -638858682, now seen corresponding path program 1 times [2022-11-16 11:23:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455725798] [2022-11-16 11:23:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:19,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455725798] [2022-11-16 11:23:19,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455725798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:19,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:19,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266108996] [2022-11-16 11:23:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:19,202 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:19,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:19,258 INFO L87 Difference]: Start difference. First operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:19,359 INFO L93 Difference]: Finished difference Result 105 states and 190 transitions. [2022-11-16 11:23:19,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 190 transitions. [2022-11-16 11:23:19,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2022-11-16 11:23:19,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 95 states and 149 transitions. [2022-11-16 11:23:19,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2022-11-16 11:23:19,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2022-11-16 11:23:19,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 149 transitions. [2022-11-16 11:23:19,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:19,387 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 149 transitions. [2022-11-16 11:23:19,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 149 transitions. [2022-11-16 11:23:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-16 11:23:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.568421052631579) internal successors, (149), 94 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 149 transitions. [2022-11-16 11:23:19,489 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 149 transitions. [2022-11-16 11:23:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:19,504 INFO L428 stractBuchiCegarLoop]: Abstraction has 95 states and 149 transitions. [2022-11-16 11:23:19,504 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:23:19,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 149 transitions. [2022-11-16 11:23:19,506 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2022-11-16 11:23:19,507 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:19,507 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:19,507 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:19,508 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:19,508 INFO L748 eck$LassoCheckResult]: Stem: 218#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 174#L225-1 [2022-11-16 11:23:19,508 INFO L750 eck$LassoCheckResult]: Loop: 174#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 210#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 211#L93 assume !(0 != main_~p1~0#1); 206#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 186#L97-1 assume !(0 != main_~p3~0#1); 187#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 191#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 220#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 182#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 183#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 201#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 192#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 193#L129-1 assume !(0 != main_~p11~0#1); 168#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 169#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 172#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 215#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 226#L149-1 assume !(0 != main_~p1~0#1); 227#L155-1 assume 0 != main_~p2~0#1; 262#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 261#L160 assume !(0 != main_~p3~0#1); 259#L165-1 assume !(0 != main_~p4~0#1); 256#L170-1 assume !(0 != main_~p5~0#1); 255#L175-1 assume !(0 != main_~p6~0#1); 253#L180-1 assume !(0 != main_~p7~0#1); 250#L185-1 assume !(0 != main_~p8~0#1); 249#L190-1 assume !(0 != main_~p9~0#1); 216#L195-1 assume !(0 != main_~p10~0#1); 188#L200-1 assume !(0 != main_~p11~0#1); 189#L205-1 assume !(0 != main_~p12~0#1); 241#L210-1 assume !(0 != main_~p13~0#1); 239#L215-1 assume 0 != main_~p14~0#1; 184#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 185#L220 assume !(0 != main_~p15~0#1); 174#L225-1 [2022-11-16 11:23:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-16 11:23:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:19,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476142964] [2022-11-16 11:23:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:19,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:19,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -364099068, now seen corresponding path program 1 times [2022-11-16 11:23:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:19,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59086159] [2022-11-16 11:23:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:19,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59086159] [2022-11-16 11:23:19,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59086159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:19,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:19,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:19,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082407426] [2022-11-16 11:23:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:19,707 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:19,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:19,710 INFO L87 Difference]: Start difference. First operand 95 states and 149 transitions. cyclomatic complexity: 56 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:19,751 INFO L93 Difference]: Finished difference Result 186 states and 290 transitions. [2022-11-16 11:23:19,752 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 290 transitions. [2022-11-16 11:23:19,762 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2022-11-16 11:23:19,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 290 transitions. [2022-11-16 11:23:19,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2022-11-16 11:23:19,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2022-11-16 11:23:19,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 290 transitions. [2022-11-16 11:23:19,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:19,771 INFO L218 hiAutomatonCegarLoop]: Abstraction has 186 states and 290 transitions. [2022-11-16 11:23:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 290 transitions. [2022-11-16 11:23:19,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-16 11:23:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.5591397849462365) internal successors, (290), 185 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2022-11-16 11:23:19,789 INFO L240 hiAutomatonCegarLoop]: Abstraction has 186 states and 290 transitions. [2022-11-16 11:23:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:19,790 INFO L428 stractBuchiCegarLoop]: Abstraction has 186 states and 290 transitions. [2022-11-16 11:23:19,791 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:23:19,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 290 transitions. [2022-11-16 11:23:19,798 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2022-11-16 11:23:19,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:19,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:19,802 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:19,804 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:19,804 INFO L748 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 495#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 496#L225-1 [2022-11-16 11:23:19,805 INFO L750 eck$LassoCheckResult]: Loop: 496#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 521#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 518#L93 assume !(0 != main_~p1~0#1); 519#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 513#L97-1 assume !(0 != main_~p3~0#1); 514#L101-1 assume !(0 != main_~p4~0#1); 589#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 588#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 587#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 586#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 585#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 584#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 583#L129-1 assume !(0 != main_~p11~0#1); 582#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 581#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 580#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 579#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 578#L149-1 assume !(0 != main_~p1~0#1); 577#L155-1 assume 0 != main_~p2~0#1; 576#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 573#L160 assume !(0 != main_~p3~0#1); 569#L165-1 assume !(0 != main_~p4~0#1); 565#L170-1 assume !(0 != main_~p5~0#1); 562#L175-1 assume !(0 != main_~p6~0#1); 558#L180-1 assume !(0 != main_~p7~0#1); 553#L185-1 assume !(0 != main_~p8~0#1); 550#L190-1 assume !(0 != main_~p9~0#1); 546#L195-1 assume !(0 != main_~p10~0#1); 542#L200-1 assume !(0 != main_~p11~0#1); 538#L205-1 assume !(0 != main_~p12~0#1); 534#L210-1 assume !(0 != main_~p13~0#1); 530#L215-1 assume 0 != main_~p14~0#1; 528#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 526#L220 assume !(0 != main_~p15~0#1); 496#L225-1 [2022-11-16 11:23:19,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-16 11:23:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:19,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883385756] [2022-11-16 11:23:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:19,828 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:19,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:19,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1022104326, now seen corresponding path program 1 times [2022-11-16 11:23:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:19,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398060024] [2022-11-16 11:23:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:19,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:19,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398060024] [2022-11-16 11:23:19,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398060024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:19,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:19,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:19,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045904039] [2022-11-16 11:23:19,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:19,929 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:19,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:19,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:19,932 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. cyclomatic complexity: 108 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:19,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:19,968 INFO L93 Difference]: Finished difference Result 366 states and 566 transitions. [2022-11-16 11:23:19,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 566 transitions. [2022-11-16 11:23:19,973 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2022-11-16 11:23:19,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 566 transitions. [2022-11-16 11:23:19,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2022-11-16 11:23:19,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2022-11-16 11:23:19,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 566 transitions. [2022-11-16 11:23:19,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:19,983 INFO L218 hiAutomatonCegarLoop]: Abstraction has 366 states and 566 transitions. [2022-11-16 11:23:19,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 566 transitions. [2022-11-16 11:23:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-11-16 11:23:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.546448087431694) internal successors, (566), 365 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 566 transitions. [2022-11-16 11:23:20,007 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 566 transitions. [2022-11-16 11:23:20,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:20,008 INFO L428 stractBuchiCegarLoop]: Abstraction has 366 states and 566 transitions. [2022-11-16 11:23:20,009 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 11:23:20,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 566 transitions. [2022-11-16 11:23:20,013 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2022-11-16 11:23:20,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:20,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:20,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:20,016 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:20,016 INFO L748 eck$LassoCheckResult]: Stem: 1060#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1053#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1054#L225-1 [2022-11-16 11:23:20,016 INFO L750 eck$LassoCheckResult]: Loop: 1054#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1078#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1079#L93 assume !(0 != main_~p1~0#1); 1205#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 1223#L97-1 assume !(0 != main_~p3~0#1); 1220#L101-1 assume !(0 != main_~p4~0#1); 1217#L105-1 assume !(0 != main_~p5~0#1); 1215#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1214#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1212#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1210#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1208#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1206#L129-1 assume !(0 != main_~p11~0#1); 1203#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1200#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1197#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1193#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 1167#L149-1 assume !(0 != main_~p1~0#1); 1165#L155-1 assume 0 != main_~p2~0#1; 1162#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 1160#L160 assume !(0 != main_~p3~0#1); 1156#L165-1 assume !(0 != main_~p4~0#1); 1153#L170-1 assume !(0 != main_~p5~0#1); 1132#L175-1 assume !(0 != main_~p6~0#1); 1128#L180-1 assume !(0 != main_~p7~0#1); 1122#L185-1 assume !(0 != main_~p8~0#1); 1118#L190-1 assume !(0 != main_~p9~0#1); 1117#L195-1 assume !(0 != main_~p10~0#1); 1241#L200-1 assume !(0 != main_~p11~0#1); 1103#L205-1 assume !(0 != main_~p12~0#1); 1102#L210-1 assume !(0 != main_~p13~0#1); 1091#L215-1 assume 0 != main_~p14~0#1; 1092#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 1086#L220 assume !(0 != main_~p15~0#1); 1054#L225-1 [2022-11-16 11:23:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-11-16 11:23:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108467419] [2022-11-16 11:23:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:20,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 512631236, now seen corresponding path program 1 times [2022-11-16 11:23:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270793872] [2022-11-16 11:23:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:20,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:20,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270793872] [2022-11-16 11:23:20,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270793872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:20,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:20,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858194170] [2022-11-16 11:23:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:20,086 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:20,087 INFO L87 Difference]: Start difference. First operand 366 states and 566 transitions. cyclomatic complexity: 208 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,124 INFO L93 Difference]: Finished difference Result 722 states and 1106 transitions. [2022-11-16 11:23:20,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1106 transitions. [2022-11-16 11:23:20,131 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2022-11-16 11:23:20,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1106 transitions. [2022-11-16 11:23:20,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2022-11-16 11:23:20,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2022-11-16 11:23:20,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1106 transitions. [2022-11-16 11:23:20,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:20,152 INFO L218 hiAutomatonCegarLoop]: Abstraction has 722 states and 1106 transitions. [2022-11-16 11:23:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1106 transitions. [2022-11-16 11:23:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2022-11-16 11:23:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5318559556786704) internal successors, (1106), 721 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1106 transitions. [2022-11-16 11:23:20,210 INFO L240 hiAutomatonCegarLoop]: Abstraction has 722 states and 1106 transitions. [2022-11-16 11:23:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:20,216 INFO L428 stractBuchiCegarLoop]: Abstraction has 722 states and 1106 transitions. [2022-11-16 11:23:20,222 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 11:23:20,222 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1106 transitions. [2022-11-16 11:23:20,232 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2022-11-16 11:23:20,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:20,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:20,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:20,234 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:20,234 INFO L748 eck$LassoCheckResult]: Stem: 2165#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 2155#L225-1 [2022-11-16 11:23:20,234 INFO L750 eck$LassoCheckResult]: Loop: 2155#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 2351#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 2348#L93 assume !(0 != main_~p1~0#1); 2349#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 2338#L97-1 assume !(0 != main_~p3~0#1); 2339#L101-1 assume !(0 != main_~p4~0#1); 2327#L105-1 assume !(0 != main_~p5~0#1); 2329#L109-1 assume !(0 != main_~p6~0#1); 2315#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2316#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2303#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2304#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2291#L129-1 assume !(0 != main_~p11~0#1); 2292#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2279#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2280#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2267#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 2268#L149-1 assume !(0 != main_~p1~0#1); 2399#L155-1 assume 0 != main_~p2~0#1; 2398#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 2397#L160 assume !(0 != main_~p3~0#1); 2393#L165-1 assume !(0 != main_~p4~0#1); 2391#L170-1 assume !(0 != main_~p5~0#1); 2389#L175-1 assume !(0 != main_~p6~0#1); 2386#L180-1 assume !(0 != main_~p7~0#1); 2381#L185-1 assume !(0 != main_~p8~0#1); 2378#L190-1 assume !(0 != main_~p9~0#1); 2374#L195-1 assume !(0 != main_~p10~0#1); 2370#L200-1 assume !(0 != main_~p11~0#1); 2366#L205-1 assume !(0 != main_~p12~0#1); 2362#L210-1 assume !(0 != main_~p13~0#1); 2359#L215-1 assume 0 != main_~p14~0#1; 2357#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 2356#L220 assume !(0 != main_~p15~0#1); 2155#L225-1 [2022-11-16 11:23:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,235 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2022-11-16 11:23:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709497659] [2022-11-16 11:23:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:20,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1859108026, now seen corresponding path program 1 times [2022-11-16 11:23:20,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306921878] [2022-11-16 11:23:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:20,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306921878] [2022-11-16 11:23:20,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306921878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:20,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:20,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130533079] [2022-11-16 11:23:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:20,313 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:20,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:20,344 INFO L87 Difference]: Start difference. First operand 722 states and 1106 transitions. cyclomatic complexity: 400 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,366 INFO L93 Difference]: Finished difference Result 1426 states and 2162 transitions. [2022-11-16 11:23:20,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2162 transitions. [2022-11-16 11:23:20,382 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2022-11-16 11:23:20,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2162 transitions. [2022-11-16 11:23:20,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2022-11-16 11:23:20,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2022-11-16 11:23:20,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2162 transitions. [2022-11-16 11:23:20,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:20,398 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2022-11-16 11:23:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2162 transitions. [2022-11-16 11:23:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2022-11-16 11:23:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5161290322580645) internal successors, (2162), 1425 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2162 transitions. [2022-11-16 11:23:20,431 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2022-11-16 11:23:20,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:20,432 INFO L428 stractBuchiCegarLoop]: Abstraction has 1426 states and 2162 transitions. [2022-11-16 11:23:20,433 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 11:23:20,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2162 transitions. [2022-11-16 11:23:20,442 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2022-11-16 11:23:20,442 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:20,442 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:20,443 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:20,443 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:20,443 INFO L748 eck$LassoCheckResult]: Stem: 4312#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4301#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 4302#L225-1 [2022-11-16 11:23:20,444 INFO L750 eck$LassoCheckResult]: Loop: 4302#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 4635#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 4632#L93 assume !(0 != main_~p1~0#1); 4595#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 4352#L97-1 assume !(0 != main_~p3~0#1); 4353#L101-1 assume !(0 != main_~p4~0#1); 4588#L105-1 assume !(0 != main_~p5~0#1); 4586#L109-1 assume !(0 != main_~p6~0#1); 4580#L113-1 assume !(0 != main_~p7~0#1); 4576#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4572#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4569#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4566#L129-1 assume !(0 != main_~p11~0#1); 4563#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4559#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4556#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4553#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 4548#L149-1 assume !(0 != main_~p1~0#1); 4546#L155-1 assume 0 != main_~p2~0#1; 4543#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 4540#L160 assume !(0 != main_~p3~0#1); 4535#L165-1 assume !(0 != main_~p4~0#1); 4536#L170-1 assume !(0 != main_~p5~0#1); 4686#L175-1 assume !(0 != main_~p6~0#1); 4682#L180-1 assume !(0 != main_~p7~0#1); 4678#L185-1 assume !(0 != main_~p8~0#1); 4674#L190-1 assume !(0 != main_~p9~0#1); 4668#L195-1 assume !(0 != main_~p10~0#1); 4663#L200-1 assume !(0 != main_~p11~0#1); 4658#L205-1 assume !(0 != main_~p12~0#1); 4653#L210-1 assume !(0 != main_~p13~0#1); 4648#L215-1 assume 0 != main_~p14~0#1; 4645#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 4642#L220 assume !(0 != main_~p15~0#1); 4302#L225-1 [2022-11-16 11:23:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2022-11-16 11:23:20,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175295322] [2022-11-16 11:23:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,457 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:20,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1797068412, now seen corresponding path program 1 times [2022-11-16 11:23:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672649053] [2022-11-16 11:23:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:20,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672649053] [2022-11-16 11:23:20,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672649053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:20,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:20,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449427190] [2022-11-16 11:23:20,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:20,544 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:20,545 INFO L87 Difference]: Start difference. First operand 1426 states and 2162 transitions. cyclomatic complexity: 768 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,579 INFO L93 Difference]: Finished difference Result 2818 states and 4226 transitions. [2022-11-16 11:23:20,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4226 transitions. [2022-11-16 11:23:20,612 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2022-11-16 11:23:20,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4226 transitions. [2022-11-16 11:23:20,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2022-11-16 11:23:20,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2022-11-16 11:23:20,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4226 transitions. [2022-11-16 11:23:20,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:20,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2022-11-16 11:23:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4226 transitions. [2022-11-16 11:23:20,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2022-11-16 11:23:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.4996451383960256) internal successors, (4226), 2817 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4226 transitions. [2022-11-16 11:23:20,758 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2022-11-16 11:23:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:20,760 INFO L428 stractBuchiCegarLoop]: Abstraction has 2818 states and 4226 transitions. [2022-11-16 11:23:20,762 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 11:23:20,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4226 transitions. [2022-11-16 11:23:20,783 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2022-11-16 11:23:20,784 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:20,784 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:20,787 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:20,788 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:20,788 INFO L748 eck$LassoCheckResult]: Stem: 8565#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8557#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 8558#L225-1 [2022-11-16 11:23:20,789 INFO L750 eck$LassoCheckResult]: Loop: 8558#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 8705#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 8706#L93 assume !(0 != main_~p1~0#1); 8830#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 8829#L97-1 assume !(0 != main_~p3~0#1); 8827#L101-1 assume !(0 != main_~p4~0#1); 8824#L105-1 assume !(0 != main_~p5~0#1); 8820#L109-1 assume !(0 != main_~p6~0#1); 8816#L113-1 assume !(0 != main_~p7~0#1); 8812#L117-1 assume !(0 != main_~p8~0#1); 8810#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8808#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8806#L129-1 assume !(0 != main_~p11~0#1); 8804#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8802#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8800#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8798#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 8795#L149-1 assume !(0 != main_~p1~0#1); 8796#L155-1 assume 0 != main_~p2~0#1; 8785#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 8786#L160 assume !(0 != main_~p3~0#1); 8777#L165-1 assume !(0 != main_~p4~0#1); 8778#L170-1 assume !(0 != main_~p5~0#1); 8766#L175-1 assume !(0 != main_~p6~0#1); 8768#L180-1 assume !(0 != main_~p7~0#1); 8756#L185-1 assume !(0 != main_~p8~0#1); 8757#L190-1 assume !(0 != main_~p9~0#1); 8747#L195-1 assume !(0 != main_~p10~0#1); 8746#L200-1 assume !(0 != main_~p11~0#1); 8735#L205-1 assume !(0 != main_~p12~0#1); 8734#L210-1 assume !(0 != main_~p13~0#1); 8722#L215-1 assume 0 != main_~p14~0#1; 8723#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 8715#L220 assume !(0 != main_~p15~0#1); 8558#L225-1 [2022-11-16 11:23:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2022-11-16 11:23:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260592619] [2022-11-16 11:23:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:20,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:20,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1656519802, now seen corresponding path program 1 times [2022-11-16 11:23:20,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:20,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220944091] [2022-11-16 11:23:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:20,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:20,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220944091] [2022-11-16 11:23:20,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220944091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:20,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:20,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008198104] [2022-11-16 11:23:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:20,908 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:20,910 INFO L87 Difference]: Start difference. First operand 2818 states and 4226 transitions. cyclomatic complexity: 1472 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:20,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,962 INFO L93 Difference]: Finished difference Result 5570 states and 8258 transitions. [2022-11-16 11:23:20,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8258 transitions. [2022-11-16 11:23:21,023 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2022-11-16 11:23:21,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8258 transitions. [2022-11-16 11:23:21,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2022-11-16 11:23:21,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2022-11-16 11:23:21,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8258 transitions. [2022-11-16 11:23:21,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:21,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2022-11-16 11:23:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8258 transitions. [2022-11-16 11:23:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2022-11-16 11:23:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.4825852782764812) internal successors, (8258), 5569 states have internal predecessors, (8258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8258 transitions. [2022-11-16 11:23:21,223 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2022-11-16 11:23:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:21,226 INFO L428 stractBuchiCegarLoop]: Abstraction has 5570 states and 8258 transitions. [2022-11-16 11:23:21,227 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-16 11:23:21,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8258 transitions. [2022-11-16 11:23:21,297 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2022-11-16 11:23:21,297 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:21,297 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:21,297 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:21,298 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:21,298 INFO L748 eck$LassoCheckResult]: Stem: 16967#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 16953#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 16954#L225-1 [2022-11-16 11:23:21,298 INFO L750 eck$LassoCheckResult]: Loop: 16954#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 17157#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 17155#L93 assume !(0 != main_~p1~0#1); 17151#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 17147#L97-1 assume !(0 != main_~p3~0#1); 17140#L101-1 assume !(0 != main_~p4~0#1); 17132#L105-1 assume !(0 != main_~p5~0#1); 17127#L109-1 assume !(0 != main_~p6~0#1); 17120#L113-1 assume !(0 != main_~p7~0#1); 17112#L117-1 assume !(0 != main_~p8~0#1); 17104#L121-1 assume !(0 != main_~p9~0#1); 17099#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17095#L129-1 assume !(0 != main_~p11~0#1); 17091#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 17087#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 17083#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 17079#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 17073#L149-1 assume !(0 != main_~p1~0#1); 17074#L155-1 assume 0 != main_~p2~0#1; 17211#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 17206#L160 assume !(0 != main_~p3~0#1); 17201#L165-1 assume !(0 != main_~p4~0#1); 17197#L170-1 assume !(0 != main_~p5~0#1); 17193#L175-1 assume !(0 != main_~p6~0#1); 17191#L180-1 assume !(0 != main_~p7~0#1); 17189#L185-1 assume !(0 != main_~p8~0#1); 17185#L190-1 assume !(0 != main_~p9~0#1); 17182#L195-1 assume !(0 != main_~p10~0#1); 17178#L200-1 assume !(0 != main_~p11~0#1); 17174#L205-1 assume !(0 != main_~p12~0#1); 17170#L210-1 assume !(0 != main_~p13~0#1); 17166#L215-1 assume 0 != main_~p14~0#1; 17164#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 17162#L220 assume !(0 != main_~p15~0#1); 16954#L225-1 [2022-11-16 11:23:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2022-11-16 11:23:21,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:21,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522392765] [2022-11-16 11:23:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:21,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:21,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:21,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1790533308, now seen corresponding path program 1 times [2022-11-16 11:23:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:21,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267144553] [2022-11-16 11:23:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:21,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267144553] [2022-11-16 11:23:21,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267144553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:21,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:21,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336769906] [2022-11-16 11:23:21,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:21,340 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:21,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:21,341 INFO L87 Difference]: Start difference. First operand 5570 states and 8258 transitions. cyclomatic complexity: 2816 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:21,409 INFO L93 Difference]: Finished difference Result 11010 states and 16130 transitions. [2022-11-16 11:23:21,409 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16130 transitions. [2022-11-16 11:23:21,480 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2022-11-16 11:23:21,536 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16130 transitions. [2022-11-16 11:23:21,536 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2022-11-16 11:23:21,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2022-11-16 11:23:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16130 transitions. [2022-11-16 11:23:21,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:21,567 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2022-11-16 11:23:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16130 transitions. [2022-11-16 11:23:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2022-11-16 11:23:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.4650317892824705) internal successors, (16130), 11009 states have internal predecessors, (16130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16130 transitions. [2022-11-16 11:23:21,979 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2022-11-16 11:23:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:21,981 INFO L428 stractBuchiCegarLoop]: Abstraction has 11010 states and 16130 transitions. [2022-11-16 11:23:21,981 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-16 11:23:21,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16130 transitions. [2022-11-16 11:23:22,028 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2022-11-16 11:23:22,029 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:22,029 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:22,029 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:22,029 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:22,030 INFO L748 eck$LassoCheckResult]: Stem: 33550#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33536#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 33537#L225-1 [2022-11-16 11:23:22,030 INFO L750 eck$LassoCheckResult]: Loop: 33537#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 33841#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 33839#L93 assume !(0 != main_~p1~0#1); 33838#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 33837#L97-1 assume !(0 != main_~p3~0#1); 33835#L101-1 assume !(0 != main_~p4~0#1); 33833#L105-1 assume !(0 != main_~p5~0#1); 33831#L109-1 assume !(0 != main_~p6~0#1); 33830#L113-1 assume !(0 != main_~p7~0#1); 33828#L117-1 assume !(0 != main_~p8~0#1); 33824#L121-1 assume !(0 != main_~p9~0#1); 33821#L125-1 assume !(0 != main_~p10~0#1); 33815#L129-1 assume !(0 != main_~p11~0#1); 33816#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 33807#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 33808#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 33799#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 33800#L149-1 assume !(0 != main_~p1~0#1); 33789#L155-1 assume 0 != main_~p2~0#1; 33790#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 33781#L160 assume !(0 != main_~p3~0#1); 33780#L165-1 assume !(0 != main_~p4~0#1); 33720#L170-1 assume !(0 != main_~p5~0#1); 33721#L175-1 assume !(0 != main_~p6~0#1); 33711#L180-1 assume !(0 != main_~p7~0#1); 33712#L185-1 assume !(0 != main_~p8~0#1); 33699#L190-1 assume !(0 != main_~p9~0#1); 33701#L195-1 assume !(0 != main_~p10~0#1); 33851#L200-1 assume !(0 != main_~p11~0#1); 33849#L205-1 assume !(0 != main_~p12~0#1); 33847#L210-1 assume !(0 != main_~p13~0#1); 33845#L215-1 assume 0 != main_~p14~0#1; 33844#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 33843#L220 assume !(0 != main_~p15~0#1); 33537#L225-1 [2022-11-16 11:23:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2022-11-16 11:23:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:22,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64149234] [2022-11-16 11:23:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:22,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:22,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:22,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash 698995654, now seen corresponding path program 1 times [2022-11-16 11:23:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:22,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717579030] [2022-11-16 11:23:22,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:22,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717579030] [2022-11-16 11:23:22,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717579030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:22,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234331819] [2022-11-16 11:23:22,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:22,070 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:22,071 INFO L87 Difference]: Start difference. First operand 11010 states and 16130 transitions. cyclomatic complexity: 5376 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:22,273 INFO L93 Difference]: Finished difference Result 21762 states and 31490 transitions. [2022-11-16 11:23:22,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 31490 transitions. [2022-11-16 11:23:22,417 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2022-11-16 11:23:22,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 31490 transitions. [2022-11-16 11:23:22,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2022-11-16 11:23:22,637 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2022-11-16 11:23:22,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 31490 transitions. [2022-11-16 11:23:22,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:22,669 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2022-11-16 11:23:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 31490 transitions. [2022-11-16 11:23:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2022-11-16 11:23:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.447017737340318) internal successors, (31490), 21761 states have internal predecessors, (31490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 31490 transitions. [2022-11-16 11:23:23,194 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2022-11-16 11:23:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:23,195 INFO L428 stractBuchiCegarLoop]: Abstraction has 21762 states and 31490 transitions. [2022-11-16 11:23:23,196 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-16 11:23:23,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 31490 transitions. [2022-11-16 11:23:23,292 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2022-11-16 11:23:23,293 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:23,293 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:23,294 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:23,294 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:23,294 INFO L748 eck$LassoCheckResult]: Stem: 66321#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 66308#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 66309#L225-1 [2022-11-16 11:23:23,294 INFO L750 eck$LassoCheckResult]: Loop: 66309#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 66490#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 66486#L93 assume !(0 != main_~p1~0#1); 66484#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 66482#L97-1 assume !(0 != main_~p3~0#1); 66478#L101-1 assume !(0 != main_~p4~0#1); 66474#L105-1 assume !(0 != main_~p5~0#1); 66472#L109-1 assume !(0 != main_~p6~0#1); 66468#L113-1 assume !(0 != main_~p7~0#1); 66464#L117-1 assume !(0 != main_~p8~0#1); 66460#L121-1 assume !(0 != main_~p9~0#1); 66456#L125-1 assume !(0 != main_~p10~0#1); 66454#L129-1 assume !(0 != main_~p11~0#1); 66450#L133-1 assume !(0 != main_~p12~0#1); 66448#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 66446#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 66444#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 66440#L149-1 assume !(0 != main_~p1~0#1); 66438#L155-1 assume 0 != main_~p2~0#1; 66436#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 66433#L160 assume !(0 != main_~p3~0#1); 66428#L165-1 assume !(0 != main_~p4~0#1); 66424#L170-1 assume !(0 != main_~p5~0#1); 66421#L175-1 assume !(0 != main_~p6~0#1); 66422#L180-1 assume !(0 != main_~p7~0#1); 66521#L185-1 assume !(0 != main_~p8~0#1); 66517#L190-1 assume !(0 != main_~p9~0#1); 66513#L195-1 assume !(0 != main_~p10~0#1); 66510#L200-1 assume !(0 != main_~p11~0#1); 66505#L205-1 assume !(0 != main_~p12~0#1); 66502#L210-1 assume !(0 != main_~p13~0#1); 66499#L215-1 assume 0 != main_~p14~0#1; 66497#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 66494#L220 assume !(0 != main_~p15~0#1); 66309#L225-1 [2022-11-16 11:23:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2022-11-16 11:23:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:23,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308152337] [2022-11-16 11:23:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:23,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:23,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:23,306 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:23,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1121697480, now seen corresponding path program 1 times [2022-11-16 11:23:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:23,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719290086] [2022-11-16 11:23:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:23,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:23,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719290086] [2022-11-16 11:23:23,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719290086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:23,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:23,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:23:23,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001581579] [2022-11-16 11:23:23,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:23,334 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:23,336 INFO L87 Difference]: Start difference. First operand 21762 states and 31490 transitions. cyclomatic complexity: 10240 Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:23,747 INFO L93 Difference]: Finished difference Result 43010 states and 61442 transitions. [2022-11-16 11:23:23,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 61442 transitions. [2022-11-16 11:23:24,155 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2022-11-16 11:23:24,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 61442 transitions. [2022-11-16 11:23:24,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2022-11-16 11:23:24,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2022-11-16 11:23:24,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 61442 transitions. [2022-11-16 11:23:24,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:24,476 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2022-11-16 11:23:24,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 61442 transitions. [2022-11-16 11:23:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2022-11-16 11:23:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4285514996512438) internal successors, (61442), 43009 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 61442 transitions. [2022-11-16 11:23:25,324 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2022-11-16 11:23:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:25,326 INFO L428 stractBuchiCegarLoop]: Abstraction has 43010 states and 61442 transitions. [2022-11-16 11:23:25,326 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-16 11:23:25,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 61442 transitions. [2022-11-16 11:23:25,501 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2022-11-16 11:23:25,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:25,502 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:25,502 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:25,503 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:25,503 INFO L748 eck$LassoCheckResult]: Stem: 131107#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131095#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 131096#L225-1 [2022-11-16 11:23:25,503 INFO L750 eck$LassoCheckResult]: Loop: 131096#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 132419#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 132416#L93 assume !(0 != main_~p1~0#1); 132413#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 132411#L97-1 assume !(0 != main_~p3~0#1); 132408#L101-1 assume !(0 != main_~p4~0#1); 132404#L105-1 assume !(0 != main_~p5~0#1); 132400#L109-1 assume !(0 != main_~p6~0#1); 132396#L113-1 assume !(0 != main_~p7~0#1); 132392#L117-1 assume !(0 != main_~p8~0#1); 132388#L121-1 assume !(0 != main_~p9~0#1); 132384#L125-1 assume !(0 != main_~p10~0#1); 132381#L129-1 assume !(0 != main_~p11~0#1); 132378#L133-1 assume !(0 != main_~p12~0#1); 132379#L137-1 assume !(0 != main_~p13~0#1); 132483#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 132481#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 132476#L149-1 assume !(0 != main_~p1~0#1); 132474#L155-1 assume 0 != main_~p2~0#1; 132472#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 132304#L160 assume !(0 != main_~p3~0#1); 132303#L165-1 assume !(0 != main_~p4~0#1); 132269#L170-1 assume !(0 != main_~p5~0#1); 132270#L175-1 assume !(0 != main_~p6~0#1); 132246#L180-1 assume !(0 != main_~p7~0#1); 132247#L185-1 assume !(0 != main_~p8~0#1); 132158#L190-1 assume !(0 != main_~p9~0#1); 132160#L195-1 assume !(0 != main_~p10~0#1); 132436#L200-1 assume !(0 != main_~p11~0#1); 132431#L205-1 assume !(0 != main_~p12~0#1); 132429#L210-1 assume !(0 != main_~p13~0#1); 132428#L215-1 assume 0 != main_~p14~0#1; 132426#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 132424#L220 assume !(0 != main_~p15~0#1); 131096#L225-1 [2022-11-16 11:23:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2022-11-16 11:23:25,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:25,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734883108] [2022-11-16 11:23:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:25,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:25,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:25,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 304049030, now seen corresponding path program 1 times [2022-11-16 11:23:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:25,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920892939] [2022-11-16 11:23:25,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:23:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:23:25,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920892939] [2022-11-16 11:23:25,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920892939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:23:25,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:23:25,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:23:25,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33305017] [2022-11-16 11:23:25,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:23:25,556 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:23:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:23:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:23:25,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:23:25,558 INFO L87 Difference]: Start difference. First operand 43010 states and 61442 transitions. cyclomatic complexity: 19456 Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:26,232 INFO L93 Difference]: Finished difference Result 84994 states and 119810 transitions. [2022-11-16 11:23:26,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 119810 transitions. [2022-11-16 11:23:26,813 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2022-11-16 11:23:27,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 119810 transitions. [2022-11-16 11:23:27,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2022-11-16 11:23:27,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2022-11-16 11:23:27,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 119810 transitions. [2022-11-16 11:23:27,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:23:27,207 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2022-11-16 11:23:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 119810 transitions. [2022-11-16 11:23:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2022-11-16 11:23:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.409628914982234) internal successors, (119810), 84993 states have internal predecessors, (119810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:23:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 119810 transitions. [2022-11-16 11:23:29,119 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2022-11-16 11:23:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:23:29,120 INFO L428 stractBuchiCegarLoop]: Abstraction has 84994 states and 119810 transitions. [2022-11-16 11:23:29,120 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-11-16 11:23:29,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 119810 transitions. [2022-11-16 11:23:29,349 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2022-11-16 11:23:29,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:23:29,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:23:29,350 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:23:29,350 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:29,351 INFO L748 eck$LassoCheckResult]: Stem: 259110#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 259098#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 259099#L225-1 [2022-11-16 11:23:29,351 INFO L750 eck$LassoCheckResult]: Loop: 259099#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 260713#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 260700#L93 assume !(0 != main_~p1~0#1); 260702#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 260686#L97-1 assume !(0 != main_~p3~0#1); 260687#L101-1 assume !(0 != main_~p4~0#1); 260670#L105-1 assume !(0 != main_~p5~0#1); 260672#L109-1 assume !(0 != main_~p6~0#1); 260644#L113-1 assume !(0 != main_~p7~0#1); 260646#L117-1 assume !(0 != main_~p8~0#1); 260618#L121-1 assume !(0 != main_~p9~0#1); 260620#L125-1 assume !(0 != main_~p10~0#1); 260839#L129-1 assume !(0 != main_~p11~0#1); 260837#L133-1 assume !(0 != main_~p12~0#1); 260833#L137-1 assume !(0 != main_~p13~0#1); 260830#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 260827#L145-1 assume !(0 != main_~p15~0#1); 260824#L149-1 assume !(0 != main_~p1~0#1); 260821#L155-1 assume 0 != main_~p2~0#1; 260818#L161 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 260796#L160 assume !(0 != main_~p3~0#1); 260787#L165-1 assume !(0 != main_~p4~0#1); 260779#L170-1 assume !(0 != main_~p5~0#1); 260771#L175-1 assume !(0 != main_~p6~0#1); 260765#L180-1 assume !(0 != main_~p7~0#1); 260761#L185-1 assume !(0 != main_~p8~0#1); 260758#L190-1 assume !(0 != main_~p9~0#1); 260756#L195-1 assume !(0 != main_~p10~0#1); 260753#L200-1 assume !(0 != main_~p11~0#1); 260730#L205-1 assume !(0 != main_~p12~0#1); 260732#L210-1 assume !(0 != main_~p13~0#1); 260746#L215-1 assume 0 != main_~p14~0#1; 260738#L221 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 260739#L220 assume !(0 != main_~p15~0#1); 259099#L225-1 [2022-11-16 11:23:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2022-11-16 11:23:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:29,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853399290] [2022-11-16 11:23:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,361 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1690095676, now seen corresponding path program 1 times [2022-11-16 11:23:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:29,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430380463] [2022-11-16 11:23:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:29,382 INFO L85 PathProgramCache]: Analyzing trace with hash 365150982, now seen corresponding path program 1 times [2022-11-16 11:23:29,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:23:29,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426974194] [2022-11-16 11:23:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:29,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:23:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,391 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:29,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:23:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:30,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:23:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:23:30,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:23:30 BoogieIcfgContainer [2022-11-16 11:23:30,297 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:23:30,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:23:30,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:23:30,298 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:23:30,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:23:18" (3/4) ... [2022-11-16 11:23:30,302 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 11:23:30,366 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:23:30,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:23:30,367 INFO L158 Benchmark]: Toolchain (without parser) took 12594.48ms. Allocated memory was 144.7MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 109.9MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 686.7MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,368 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 74.8MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:30,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.21ms. Allocated memory is still 144.7MB. Free memory was 109.9MB in the beginning and 119.4MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.03ms. Allocated memory is still 144.7MB. Free memory was 119.4MB in the beginning and 117.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,369 INFO L158 Benchmark]: Boogie Preprocessor took 28.86ms. Allocated memory is still 144.7MB. Free memory was 117.8MB in the beginning and 116.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:23:30,369 INFO L158 Benchmark]: RCFGBuilder took 489.43ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 101.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,369 INFO L158 Benchmark]: BuchiAutomizer took 11640.66ms. Allocated memory was 144.7MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 101.0MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 678.9MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,370 INFO L158 Benchmark]: Witness Printer took 68.46ms. Allocated memory is still 5.1GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:23:30,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 74.8MB in the beginning and 74.8MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.21ms. Allocated memory is still 144.7MB. Free memory was 109.9MB in the beginning and 119.4MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.03ms. Allocated memory is still 144.7MB. Free memory was 119.4MB in the beginning and 117.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.86ms. Allocated memory is still 144.7MB. Free memory was 117.8MB in the beginning and 116.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 489.43ms. Allocated memory is still 144.7MB. Free memory was 116.2MB in the beginning and 101.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 11640.66ms. Allocated memory was 144.7MB in the beginning and 5.1GB in the end (delta: 5.0GB). Free memory was 101.0MB in the beginning and 4.4GB in the end (delta: -4.3GB). Peak memory consumption was 678.9MB. Max. memory is 16.1GB. * Witness Printer took 68.46ms. Allocated memory is still 5.1GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (11 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.11 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 84994 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.5s and 12 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 8.4s. Highest rank in rank-based complementation 0. Minimization of det autom 11. Minimization of nondet autom 0. Automata minimization 4.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 2.0s Buchi closure took 0.2s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 648 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 2072 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 801 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1271 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI11 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND TRUE p2 != 0 [L98] lk2 = 1 [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND TRUE p2 != 0 [L161] COND FALSE !(lk2 != 1) [L162] lk2 = 0 [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND TRUE p14 != 0 [L221] COND FALSE !(lk14 != 1) [L222] lk14 = 0 [L225] COND FALSE !(p15 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 56]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND TRUE p2 != 0 [L98] lk2 = 1 [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND TRUE p14 != 0 [L146] lk14 = 1 [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND TRUE p2 != 0 [L161] COND FALSE !(lk2 != 1) [L162] lk2 = 0 [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND TRUE p14 != 0 [L221] COND FALSE !(lk14 != 1) [L222] lk14 = 0 [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:23:30,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28ce8e64-ebdd-4bba-9f5d-d851748b1400/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)