./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/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_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/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_702cac50-c3d0-4fda-8f83-4f882488268a/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 ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 --- 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 11:10:06,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:10:06,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:10:06,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:10:06,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:10:06,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:10:06,208 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:10:06,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:10:06,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:10:06,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:10:06,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:10:06,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:10:06,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:10:06,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:10:06,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:10:06,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:10:06,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:10:06,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:10:06,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:10:06,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:10:06,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:10:06,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:10:06,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:10:06,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:10:06,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:10:06,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:10:06,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:10:06,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:10:06,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:10:06,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:10:06,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:10:06,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:10:06,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:10:06,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:10:06,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:10:06,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:10:06,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:10:06,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:10:06,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:10:06,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:10:06,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:10:06,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 11:10:06,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:10:06,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:10:06,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:10:06,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:10:06,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:10:06,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:10:06,357 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:10:06,357 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:10:06,358 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:10:06,358 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:10:06,359 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:10:06,360 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:10:06,360 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:10:06,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:10:06,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:10:06,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:10:06,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:10:06,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:10:06,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:10:06,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:10:06,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:10:06,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:10:06,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:10:06,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:10:06,366 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:10:06,366 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:10:06,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:10:06,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:10:06,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:10:06,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:10:06,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:10:06,369 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:10:06,370 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_702cac50-c3d0-4fda-8f83-4f882488268a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2022-11-16 11:10:06,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:10:06,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:10:06,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:10:06,778 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:10:06,780 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:10:06,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/locks/test_locks_15-2.c [2022-11-16 11:10:06,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/data/c1ee231ae/1dc500dd3caa455785bef8f7b85c3577/FLAGfccc6db3e [2022-11-16 11:10:07,341 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:10:07,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/sv-benchmarks/c/locks/test_locks_15-2.c [2022-11-16 11:10:07,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/data/c1ee231ae/1dc500dd3caa455785bef8f7b85c3577/FLAGfccc6db3e [2022-11-16 11:10:07,717 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/data/c1ee231ae/1dc500dd3caa455785bef8f7b85c3577 [2022-11-16 11:10:07,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:10:07,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:10:07,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:07,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:10:07,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:10:07,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:07" (1/1) ... [2022-11-16 11:10:07,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c219f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:07, skipping insertion in model container [2022-11-16 11:10:07,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:07" (1/1) ... [2022-11-16 11:10:07,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:10:07,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:10:07,996 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_702cac50-c3d0-4fda-8f83-4f882488268a/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2022-11-16 11:10:07,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:08,008 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:10:08,041 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_702cac50-c3d0-4fda-8f83-4f882488268a/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2022-11-16 11:10:08,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:08,055 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:10:08,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08 WrapperNode [2022-11-16 11:10:08,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:08,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:08,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:10:08,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:10:08,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,094 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 177 [2022-11-16 11:10:08,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:08,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:10:08,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:10:08,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:10:08,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,148 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:10:08,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:10:08,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:10:08,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:10:08,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (1/1) ... [2022-11-16 11:10:08,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:10:08,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:08,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:10:08,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:10:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:10:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:10:08,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:10:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:10:08,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:10:08,332 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:10:08,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:10:08,672 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:10:08,672 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:10:08,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:08 BoogieIcfgContainer [2022-11-16 11:10:08,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:10:08,675 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:10:08,676 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:10:08,689 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:10:08,690 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:10:08,690 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:10:07" (1/3) ... [2022-11-16 11:10:08,691 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@128bdda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:10:08, skipping insertion in model container [2022-11-16 11:10:08,691 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:10:08,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:08" (2/3) ... [2022-11-16 11:10:08,692 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@128bdda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:10:08, skipping insertion in model container [2022-11-16 11:10:08,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:10:08,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:08" (3/3) ... [2022-11-16 11:10:08,694 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_15-2.c [2022-11-16 11:10:08,763 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:10:08,763 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:10:08,764 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:10:08,764 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:10:08,764 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:10:08,764 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:10:08,764 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:10:08,764 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:10:08,769 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 11:10:08,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2022-11-16 11:10:08,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:08,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:08,795 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:08,795 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] [2022-11-16 11:10:08,796 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:10:08,796 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 11:10:08,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2022-11-16 11:10:08,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:08,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:08,801 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:08,802 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] [2022-11-16 11:10:08,809 INFO L748 eck$LassoCheckResult]: Stem: 43#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; 20#L225-1true [2022-11-16 11:10:08,811 INFO L750 eck$LassoCheckResult]: Loop: 20#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; 25#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; 50#L105-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 45#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; 22#L117-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 30#L121-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 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; 40#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; 48#L149-1true assume !(0 != main_~p1~0#1); 47#L155-1true assume !(0 != main_~p2~0#1); 27#L160-1true assume !(0 != main_~p3~0#1); 11#L165-1true assume !(0 != main_~p4~0#1); 42#L170-1true assume !(0 != main_~p5~0#1); 46#L175-1true assume !(0 != main_~p6~0#1); 18#L180-1true assume !(0 != main_~p7~0#1); 39#L185-1true assume !(0 != main_~p8~0#1); 24#L190-1true assume !(0 != main_~p9~0#1); 41#L195-1true assume !(0 != main_~p10~0#1); 15#L200-1true assume !(0 != main_~p11~0#1); 44#L205-1true assume !(0 != main_~p12~0#1); 23#L210-1true assume !(0 != main_~p13~0#1); 5#L215-1true assume !(0 != main_~p14~0#1); 37#L220-1true assume !(0 != main_~p15~0#1); 20#L225-1true [2022-11-16 11:10:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:08,817 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-16 11:10:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:08,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647280875] [2022-11-16 11:10:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:08,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:09,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2064553094, now seen corresponding path program 1 times [2022-11-16 11:10:09,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818716621] [2022-11-16 11:10:09,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:09,226 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 11:10:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:09,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818716621] [2022-11-16 11:10:09,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818716621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:09,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:09,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428124596] [2022-11-16 11:10:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:09,238 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:09,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:09,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:09,291 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:09,388 INFO L93 Difference]: Finished difference Result 105 states and 190 transitions. [2022-11-16 11:10:09,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 190 transitions. [2022-11-16 11:10:09,398 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2022-11-16 11:10:09,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 95 states and 153 transitions. [2022-11-16 11:10:09,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2022-11-16 11:10:09,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2022-11-16 11:10:09,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 153 transitions. [2022-11-16 11:10:09,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:09,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 153 transitions. [2022-11-16 11:10:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 153 transitions. [2022-11-16 11:10:09,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-16 11:10:09,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.6105263157894736) internal successors, (153), 94 states have internal predecessors, (153), 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 11:10:09,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 153 transitions. [2022-11-16 11:10:09,449 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 153 transitions. [2022-11-16 11:10:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:09,455 INFO L428 stractBuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2022-11-16 11:10:09,455 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:10:09,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 153 transitions. [2022-11-16 11:10:09,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2022-11-16 11:10:09,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:09,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:09,459 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:09,459 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] [2022-11-16 11:10:09,459 INFO L748 eck$LassoCheckResult]: Stem: 215#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); 208#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; 209#L225-1 [2022-11-16 11:10:09,460 INFO L750 eck$LassoCheckResult]: Loop: 209#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 237#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; 236#L93 assume !(0 != main_~p1~0#1); 235#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 234#L97-1 assume !(0 != main_~p3~0#1); 233#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 220#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 216#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 183#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 184#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 199#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 191#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 192#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; 173#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 212#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 221#L149-1 assume !(0 != main_~p1~0#1); 222#L155-1 assume !(0 != main_~p2~0#1); 261#L160-1 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); 247#L195-1 assume !(0 != main_~p10~0#1); 187#L200-1 assume !(0 != main_~p11~0#1); 188#L205-1 assume !(0 != main_~p12~0#1); 206#L210-1 assume !(0 != main_~p13~0#1); 241#L215-1 assume !(0 != main_~p14~0#1); 239#L220-1 assume !(0 != main_~p15~0#1); 209#L225-1 [2022-11-16 11:10:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,460 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-16 11:10:09,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267683577] [2022-11-16 11:10:09,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:09,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2087185348, now seen corresponding path program 1 times [2022-11-16 11:10:09,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387615643] [2022-11-16 11:10:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:09,540 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 11:10:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:09,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387615643] [2022-11-16 11:10:09,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387615643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:09,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:09,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177300971] [2022-11-16 11:10:09,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:09,542 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:09,543 INFO L87 Difference]: Start difference. First operand 95 states and 153 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:09,568 INFO L93 Difference]: Finished difference Result 186 states and 298 transitions. [2022-11-16 11:10:09,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 298 transitions. [2022-11-16 11:10:09,572 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2022-11-16 11:10:09,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 298 transitions. [2022-11-16 11:10:09,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2022-11-16 11:10:09,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2022-11-16 11:10:09,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 298 transitions. [2022-11-16 11:10:09,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:09,577 INFO L218 hiAutomatonCegarLoop]: Abstraction has 186 states and 298 transitions. [2022-11-16 11:10:09,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 298 transitions. [2022-11-16 11:10:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-16 11:10:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.6021505376344085) internal successors, (298), 185 states have internal predecessors, (298), 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 11:10:09,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 298 transitions. [2022-11-16 11:10:09,592 INFO L240 hiAutomatonCegarLoop]: Abstraction has 186 states and 298 transitions. [2022-11-16 11:10:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:09,593 INFO L428 stractBuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2022-11-16 11:10:09,593 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:10:09,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 298 transitions. [2022-11-16 11:10:09,596 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2022-11-16 11:10:09,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:09,596 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:09,597 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:09,597 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] [2022-11-16 11:10:09,597 INFO L748 eck$LassoCheckResult]: Stem: 508#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); 498#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; 499#L225-1 [2022-11-16 11:10:09,597 INFO L750 eck$LassoCheckResult]: Loop: 499#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 554#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; 552#L93 assume !(0 != main_~p1~0#1); 537#L93-2 assume !(0 != main_~p2~0#1); 538#L97-1 assume !(0 != main_~p3~0#1); 533#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 514#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 509#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 470#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 471#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 486#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 478#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 479#L129-1 assume !(0 != main_~p11~0#1); 455#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 456#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 460#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 515#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 516#L149-1 assume !(0 != main_~p1~0#1); 540#L155-1 assume !(0 != main_~p2~0#1); 591#L160-1 assume !(0 != main_~p3~0#1); 589#L165-1 assume !(0 != main_~p4~0#1); 586#L170-1 assume !(0 != main_~p5~0#1); 585#L175-1 assume !(0 != main_~p6~0#1); 583#L180-1 assume !(0 != main_~p7~0#1); 580#L185-1 assume !(0 != main_~p8~0#1); 579#L190-1 assume !(0 != main_~p9~0#1); 577#L195-1 assume !(0 != main_~p10~0#1); 575#L200-1 assume !(0 != main_~p11~0#1); 573#L205-1 assume !(0 != main_~p12~0#1); 571#L210-1 assume !(0 != main_~p13~0#1); 569#L215-1 assume !(0 != main_~p14~0#1); 558#L220-1 assume !(0 != main_~p15~0#1); 499#L225-1 [2022-11-16 11:10:09,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,598 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-16 11:10:09,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223695953] [2022-11-16 11:10:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,613 INFO L85 PathProgramCache]: Analyzing trace with hash -821578554, now seen corresponding path program 1 times [2022-11-16 11:10:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678766580] [2022-11-16 11:10:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:09,669 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 11:10:09,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:09,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678766580] [2022-11-16 11:10:09,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678766580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:09,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:09,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892659574] [2022-11-16 11:10:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:09,673 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:09,676 INFO L87 Difference]: Start difference. First operand 186 states and 298 transitions. cyclomatic complexity: 116 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:09,719 INFO L93 Difference]: Finished difference Result 366 states and 582 transitions. [2022-11-16 11:10:09,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 582 transitions. [2022-11-16 11:10:09,724 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2022-11-16 11:10:09,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 582 transitions. [2022-11-16 11:10:09,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2022-11-16 11:10:09,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2022-11-16 11:10:09,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 582 transitions. [2022-11-16 11:10:09,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:09,731 INFO L218 hiAutomatonCegarLoop]: Abstraction has 366 states and 582 transitions. [2022-11-16 11:10:09,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 582 transitions. [2022-11-16 11:10:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-11-16 11:10:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.5901639344262295) internal successors, (582), 365 states have internal predecessors, (582), 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 11:10:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 582 transitions. [2022-11-16 11:10:09,780 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 582 transitions. [2022-11-16 11:10:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:09,783 INFO L428 stractBuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2022-11-16 11:10:09,784 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 11:10:09,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 582 transitions. [2022-11-16 11:10:09,786 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2022-11-16 11:10:09,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:09,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:09,787 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:09,788 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] [2022-11-16 11:10:09,788 INFO L748 eck$LassoCheckResult]: Stem: 1067#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); 1057#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; 1058#L225-1 [2022-11-16 11:10:09,788 INFO L750 eck$LassoCheckResult]: Loop: 1058#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1096#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; 1092#L93 assume !(0 != main_~p1~0#1); 1085#L93-2 assume !(0 != main_~p2~0#1); 1086#L97-1 assume !(0 != main_~p3~0#1); 1237#L101-1 assume !(0 != main_~p4~0#1); 1234#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 1232#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1228#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1224#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1220#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1216#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1212#L129-1 assume !(0 != main_~p11~0#1); 1208#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1204#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1200#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1196#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 1190#L149-1 assume !(0 != main_~p1~0#1); 1188#L155-1 assume !(0 != main_~p2~0#1); 1187#L160-1 assume !(0 != main_~p3~0#1); 1182#L165-1 assume !(0 != main_~p4~0#1); 1175#L170-1 assume !(0 != main_~p5~0#1); 1127#L175-1 assume !(0 != main_~p6~0#1); 1123#L180-1 assume !(0 != main_~p7~0#1); 1120#L185-1 assume !(0 != main_~p8~0#1); 1119#L190-1 assume !(0 != main_~p9~0#1); 1117#L195-1 assume !(0 != main_~p10~0#1); 1115#L200-1 assume !(0 != main_~p11~0#1); 1113#L205-1 assume !(0 != main_~p12~0#1); 1111#L210-1 assume !(0 != main_~p13~0#1); 1109#L215-1 assume !(0 != main_~p14~0#1); 1107#L220-1 assume !(0 != main_~p15~0#1); 1058#L225-1 [2022-11-16 11:10:09,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-11-16 11:10:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857655055] [2022-11-16 11:10:09,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,814 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:09,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1101649480, now seen corresponding path program 1 times [2022-11-16 11:10:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:09,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269383921] [2022-11-16 11:10:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:09,915 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 11:10:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:09,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269383921] [2022-11-16 11:10:09,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269383921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:09,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:09,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563098638] [2022-11-16 11:10:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:09,917 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:09,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:09,919 INFO L87 Difference]: Start difference. First operand 366 states and 582 transitions. cyclomatic complexity: 224 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:09,939 INFO L93 Difference]: Finished difference Result 722 states and 1138 transitions. [2022-11-16 11:10:09,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1138 transitions. [2022-11-16 11:10:09,948 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2022-11-16 11:10:09,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1138 transitions. [2022-11-16 11:10:09,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2022-11-16 11:10:09,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2022-11-16 11:10:09,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1138 transitions. [2022-11-16 11:10:09,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:09,987 INFO L218 hiAutomatonCegarLoop]: Abstraction has 722 states and 1138 transitions. [2022-11-16 11:10:09,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1138 transitions. [2022-11-16 11:10:10,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2022-11-16 11:10:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5761772853185596) internal successors, (1138), 721 states have internal predecessors, (1138), 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 11:10:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1138 transitions. [2022-11-16 11:10:10,032 INFO L240 hiAutomatonCegarLoop]: Abstraction has 722 states and 1138 transitions. [2022-11-16 11:10:10,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:10,034 INFO L428 stractBuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2022-11-16 11:10:10,035 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 11:10:10,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1138 transitions. [2022-11-16 11:10:10,040 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2022-11-16 11:10:10,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:10,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:10,045 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:10,046 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] [2022-11-16 11:10:10,046 INFO L748 eck$LassoCheckResult]: Stem: 2156#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); 2149#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; 2150#L225-1 [2022-11-16 11:10:10,046 INFO L750 eck$LassoCheckResult]: Loop: 2150#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 2251#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; 2247#L93 assume !(0 != main_~p1~0#1); 2240#L93-2 assume !(0 != main_~p2~0#1); 2235#L97-1 assume !(0 != main_~p3~0#1); 2228#L101-1 assume !(0 != main_~p4~0#1); 2222#L105-1 assume !(0 != main_~p5~0#1); 2218#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 2216#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2214#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2212#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2210#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2207#L129-1 assume !(0 != main_~p11~0#1); 2208#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2201#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2202#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2194#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 2195#L149-1 assume !(0 != main_~p1~0#1); 2184#L155-1 assume !(0 != main_~p2~0#1); 2186#L160-1 assume !(0 != main_~p3~0#1); 2363#L165-1 assume !(0 != main_~p4~0#1); 2351#L170-1 assume !(0 != main_~p5~0#1); 2350#L175-1 assume !(0 != main_~p6~0#1); 2348#L180-1 assume !(0 != main_~p7~0#1); 2344#L185-1 assume !(0 != main_~p8~0#1); 2339#L190-1 assume !(0 != main_~p9~0#1); 2333#L195-1 assume !(0 != main_~p10~0#1); 2282#L200-1 assume !(0 != main_~p11~0#1); 2280#L205-1 assume !(0 != main_~p12~0#1); 2274#L210-1 assume !(0 != main_~p13~0#1); 2270#L215-1 assume !(0 != main_~p14~0#1); 2260#L220-1 assume !(0 != main_~p15~0#1); 2150#L225-1 [2022-11-16 11:10:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,047 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2022-11-16 11:10:10,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924944111] [2022-11-16 11:10:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,056 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1163689094, now seen corresponding path program 1 times [2022-11-16 11:10:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482048140] [2022-11-16 11:10:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,098 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 11:10:10,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:10,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482048140] [2022-11-16 11:10:10,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482048140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:10,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:10,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:10,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626595381] [2022-11-16 11:10:10,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:10,100 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:10,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:10,102 INFO L87 Difference]: Start difference. First operand 722 states and 1138 transitions. cyclomatic complexity: 432 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:10,121 INFO L93 Difference]: Finished difference Result 1426 states and 2226 transitions. [2022-11-16 11:10:10,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2226 transitions. [2022-11-16 11:10:10,133 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2022-11-16 11:10:10,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2226 transitions. [2022-11-16 11:10:10,142 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2022-11-16 11:10:10,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2022-11-16 11:10:10,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2226 transitions. [2022-11-16 11:10:10,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:10,146 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2022-11-16 11:10:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2226 transitions. [2022-11-16 11:10:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2022-11-16 11:10:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5610098176718092) internal successors, (2226), 1425 states have internal predecessors, (2226), 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 11:10:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2226 transitions. [2022-11-16 11:10:10,181 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2022-11-16 11:10:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:10,182 INFO L428 stractBuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2022-11-16 11:10:10,183 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 11:10:10,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2226 transitions. [2022-11-16 11:10:10,191 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2022-11-16 11:10:10,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:10,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:10,192 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:10,192 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] [2022-11-16 11:10:10,193 INFO L748 eck$LassoCheckResult]: Stem: 4313#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); 4305#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; 4306#L225-1 [2022-11-16 11:10:10,193 INFO L750 eck$LassoCheckResult]: Loop: 4306#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 4520#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; 4521#L93 assume !(0 != main_~p1~0#1); 4734#L93-2 assume !(0 != main_~p2~0#1); 4733#L97-1 assume !(0 != main_~p3~0#1); 4731#L101-1 assume !(0 != main_~p4~0#1); 4728#L105-1 assume !(0 != main_~p5~0#1); 4724#L109-1 assume !(0 != main_~p6~0#1); 4722#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 4720#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4718#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4716#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4714#L129-1 assume !(0 != main_~p11~0#1); 4712#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4710#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4708#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4706#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 4703#L149-1 assume !(0 != main_~p1~0#1); 4704#L155-1 assume !(0 != main_~p2~0#1); 4753#L160-1 assume !(0 != main_~p3~0#1); 4654#L165-1 assume !(0 != main_~p4~0#1); 4655#L170-1 assume !(0 != main_~p5~0#1); 4643#L175-1 assume !(0 != main_~p6~0#1); 4645#L180-1 assume !(0 != main_~p7~0#1); 4627#L185-1 assume !(0 != main_~p8~0#1); 4628#L190-1 assume !(0 != main_~p9~0#1); 4612#L195-1 assume !(0 != main_~p10~0#1); 4611#L200-1 assume !(0 != main_~p11~0#1); 4595#L205-1 assume !(0 != main_~p12~0#1); 4587#L210-1 assume !(0 != main_~p13~0#1); 4586#L215-1 assume !(0 != main_~p14~0#1); 4540#L220-1 assume !(0 != main_~p15~0#1); 4306#L225-1 [2022-11-16 11:10:10,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2022-11-16 11:10:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260882498] [2022-11-16 11:10:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:10,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1304237704, now seen corresponding path program 1 times [2022-11-16 11:10:10,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100224198] [2022-11-16 11:10:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,271 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 11:10:10,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:10,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100224198] [2022-11-16 11:10:10,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100224198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:10,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:10,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395928507] [2022-11-16 11:10:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:10,274 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:10,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:10,277 INFO L87 Difference]: Start difference. First operand 1426 states and 2226 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:10,311 INFO L93 Difference]: Finished difference Result 2818 states and 4354 transitions. [2022-11-16 11:10:10,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4354 transitions. [2022-11-16 11:10:10,346 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2022-11-16 11:10:10,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4354 transitions. [2022-11-16 11:10:10,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2022-11-16 11:10:10,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2022-11-16 11:10:10,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4354 transitions. [2022-11-16 11:10:10,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:10,388 INFO L218 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2022-11-16 11:10:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4354 transitions. [2022-11-16 11:10:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2022-11-16 11:10:10,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.5450674237047552) internal successors, (4354), 2817 states have internal predecessors, (4354), 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 11:10:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4354 transitions. [2022-11-16 11:10:10,453 INFO L240 hiAutomatonCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2022-11-16 11:10:10,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:10,459 INFO L428 stractBuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2022-11-16 11:10:10,461 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 11:10:10,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4354 transitions. [2022-11-16 11:10:10,479 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2022-11-16 11:10:10,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:10,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:10,484 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:10,485 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] [2022-11-16 11:10:10,486 INFO L748 eck$LassoCheckResult]: Stem: 8576#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); 8562#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; 8563#L225-1 [2022-11-16 11:10:10,487 INFO L750 eck$LassoCheckResult]: Loop: 8563#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 8727#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; 8725#L93 assume !(0 != main_~p1~0#1); 8724#L93-2 assume !(0 != main_~p2~0#1); 8718#L97-1 assume !(0 != main_~p3~0#1); 8719#L101-1 assume !(0 != main_~p4~0#1); 8825#L105-1 assume !(0 != main_~p5~0#1); 8822#L109-1 assume !(0 != main_~p6~0#1); 8818#L113-1 assume !(0 != main_~p7~0#1); 8816#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 8815#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8812#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8809#L129-1 assume !(0 != main_~p11~0#1); 8806#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; 8798#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8793#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 8787#L149-1 assume !(0 != main_~p1~0#1); 8781#L155-1 assume !(0 != main_~p2~0#1); 8776#L160-1 assume !(0 != main_~p3~0#1); 8769#L165-1 assume !(0 != main_~p4~0#1); 8763#L170-1 assume !(0 != main_~p5~0#1); 8758#L175-1 assume !(0 != main_~p6~0#1); 8756#L180-1 assume !(0 != main_~p7~0#1); 8750#L185-1 assume !(0 != main_~p8~0#1); 8747#L190-1 assume !(0 != main_~p9~0#1); 8743#L195-1 assume !(0 != main_~p10~0#1); 8737#L200-1 assume !(0 != main_~p11~0#1); 8735#L205-1 assume !(0 != main_~p12~0#1); 8733#L210-1 assume !(0 != main_~p13~0#1); 8731#L215-1 assume !(0 != main_~p14~0#1); 8729#L220-1 assume !(0 != main_~p15~0#1); 8563#L225-1 [2022-11-16 11:10:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,493 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2022-11-16 11:10:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889754618] [2022-11-16 11:10:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:10,502 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1170224198, now seen corresponding path program 1 times [2022-11-16 11:10:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534758449] [2022-11-16 11:10:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:10,554 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 11:10:10,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:10,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534758449] [2022-11-16 11:10:10,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534758449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:10,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:10,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:10,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933866595] [2022-11-16 11:10:10,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:10,556 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:10,557 INFO L87 Difference]: Start difference. First operand 2818 states and 4354 transitions. cyclomatic complexity: 1600 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:10,602 INFO L93 Difference]: Finished difference Result 5570 states and 8514 transitions. [2022-11-16 11:10:10,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8514 transitions. [2022-11-16 11:10:10,701 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2022-11-16 11:10:10,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8514 transitions. [2022-11-16 11:10:10,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2022-11-16 11:10:10,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2022-11-16 11:10:10,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8514 transitions. [2022-11-16 11:10:10,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:10,752 INFO L218 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2022-11-16 11:10:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8514 transitions. [2022-11-16 11:10:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2022-11-16 11:10:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.5285457809694794) internal successors, (8514), 5569 states have internal predecessors, (8514), 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 11:10:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8514 transitions. [2022-11-16 11:10:10,946 INFO L240 hiAutomatonCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2022-11-16 11:10:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:10,948 INFO L428 stractBuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2022-11-16 11:10:10,949 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-16 11:10:10,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8514 transitions. [2022-11-16 11:10:10,989 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2022-11-16 11:10:10,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:10,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:10,990 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:10,990 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] [2022-11-16 11:10:10,990 INFO L748 eck$LassoCheckResult]: Stem: 16963#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); 16949#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; 16950#L225-1 [2022-11-16 11:10:10,991 INFO L750 eck$LassoCheckResult]: Loop: 16950#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 17206#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; 17200#L93 assume !(0 != main_~p1~0#1); 17196#L93-2 assume !(0 != main_~p2~0#1); 17193#L97-1 assume !(0 != main_~p3~0#1); 17187#L101-1 assume !(0 != main_~p4~0#1); 17181#L105-1 assume !(0 != main_~p5~0#1); 17177#L109-1 assume !(0 != main_~p6~0#1); 17172#L113-1 assume !(0 != main_~p7~0#1); 17166#L117-1 assume !(0 != main_~p8~0#1); 17167#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 17154#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17155#L129-1 assume !(0 != main_~p11~0#1); 17146#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 17147#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 17138#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 17139#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 17128#L149-1 assume !(0 != main_~p1~0#1); 17129#L155-1 assume !(0 != main_~p2~0#1); 17118#L160-1 assume !(0 != main_~p3~0#1); 17117#L165-1 assume !(0 != main_~p4~0#1); 17104#L170-1 assume !(0 != main_~p5~0#1); 17105#L175-1 assume !(0 != main_~p6~0#1); 17095#L180-1 assume !(0 != main_~p7~0#1); 17096#L185-1 assume !(0 != main_~p8~0#1); 17248#L190-1 assume !(0 != main_~p9~0#1); 17244#L195-1 assume !(0 != main_~p10~0#1); 17240#L200-1 assume !(0 != main_~p11~0#1); 17234#L205-1 assume !(0 != main_~p12~0#1); 17228#L210-1 assume !(0 != main_~p13~0#1); 17222#L215-1 assume !(0 != main_~p14~0#1); 17216#L220-1 assume !(0 != main_~p15~0#1); 16950#L225-1 [2022-11-16 11:10:10,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:10,992 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2022-11-16 11:10:10,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:10,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557975221] [2022-11-16 11:10:10,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:10,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:11,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:11,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:11,018 INFO L85 PathProgramCache]: Analyzing trace with hash -635214136, now seen corresponding path program 1 times [2022-11-16 11:10:11,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:11,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453650595] [2022-11-16 11:10:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:11,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:11,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453650595] [2022-11-16 11:10:11,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453650595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:11,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:11,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:11,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027333681] [2022-11-16 11:10:11,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:11,119 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:11,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:11,121 INFO L87 Difference]: Start difference. First operand 5570 states and 8514 transitions. cyclomatic complexity: 3072 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:11,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:11,209 INFO L93 Difference]: Finished difference Result 11010 states and 16642 transitions. [2022-11-16 11:10:11,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16642 transitions. [2022-11-16 11:10:11,311 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2022-11-16 11:10:11,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16642 transitions. [2022-11-16 11:10:11,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2022-11-16 11:10:11,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2022-11-16 11:10:11,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16642 transitions. [2022-11-16 11:10:11,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:11,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2022-11-16 11:10:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16642 transitions. [2022-11-16 11:10:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2022-11-16 11:10:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.5115349682107175) internal successors, (16642), 11009 states have internal predecessors, (16642), 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 11:10:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16642 transitions. [2022-11-16 11:10:11,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2022-11-16 11:10:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:11,809 INFO L428 stractBuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2022-11-16 11:10:11,809 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-16 11:10:11,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16642 transitions. [2022-11-16 11:10:11,900 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2022-11-16 11:10:11,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:11,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:11,902 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:11,902 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] [2022-11-16 11:10:11,902 INFO L748 eck$LassoCheckResult]: Stem: 33547#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); 33535#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; 33536#L225-1 [2022-11-16 11:10:11,904 INFO L750 eck$LassoCheckResult]: Loop: 33536#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 34190#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; 34191#L93 assume !(0 != main_~p1~0#1); 34313#L93-2 assume !(0 != main_~p2~0#1); 34311#L97-1 assume !(0 != main_~p3~0#1); 34307#L101-1 assume !(0 != main_~p4~0#1); 34304#L105-1 assume !(0 != main_~p5~0#1); 34302#L109-1 assume !(0 != main_~p6~0#1); 34298#L113-1 assume !(0 != main_~p7~0#1); 34294#L117-1 assume !(0 != main_~p8~0#1); 34290#L121-1 assume !(0 != main_~p9~0#1); 34288#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 34286#L129-1 assume !(0 != main_~p11~0#1); 34284#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 34282#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 34280#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 34278#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 34274#L149-1 assume !(0 != main_~p1~0#1); 34270#L155-1 assume !(0 != main_~p2~0#1); 34267#L160-1 assume !(0 != main_~p3~0#1); 34262#L165-1 assume !(0 != main_~p4~0#1); 34258#L170-1 assume !(0 != main_~p5~0#1); 34256#L175-1 assume !(0 != main_~p6~0#1); 34233#L180-1 assume !(0 != main_~p7~0#1); 34234#L185-1 assume !(0 != main_~p8~0#1); 34227#L190-1 assume !(0 != main_~p9~0#1); 34229#L195-1 assume !(0 != main_~p10~0#1); 34223#L200-1 assume !(0 != main_~p11~0#1); 34222#L205-1 assume !(0 != main_~p12~0#1); 34217#L210-1 assume !(0 != main_~p13~0#1); 34216#L215-1 assume !(0 != main_~p14~0#1); 34208#L220-1 assume !(0 != main_~p15~0#1); 33536#L225-1 [2022-11-16 11:10:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:11,905 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2022-11-16 11:10:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:11,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495033722] [2022-11-16 11:10:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:11,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:11,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:11,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -416359418, now seen corresponding path program 1 times [2022-11-16 11:10:11,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:11,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185791781] [2022-11-16 11:10:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:11,950 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 11:10:11,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:11,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185791781] [2022-11-16 11:10:11,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185791781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:11,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:11,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:11,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034758012] [2022-11-16 11:10:11,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:11,953 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:11,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:11,954 INFO L87 Difference]: Start difference. First operand 11010 states and 16642 transitions. cyclomatic complexity: 5888 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:12,181 INFO L93 Difference]: Finished difference Result 21762 states and 32514 transitions. [2022-11-16 11:10:12,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 32514 transitions. [2022-11-16 11:10:12,331 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2022-11-16 11:10:12,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 32514 transitions. [2022-11-16 11:10:12,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2022-11-16 11:10:12,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2022-11-16 11:10:12,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 32514 transitions. [2022-11-16 11:10:12,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:12,547 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2022-11-16 11:10:12,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 32514 transitions. [2022-11-16 11:10:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2022-11-16 11:10:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.4940722360077199) internal successors, (32514), 21761 states have internal predecessors, (32514), 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 11:10:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 32514 transitions. [2022-11-16 11:10:12,941 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2022-11-16 11:10:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:12,943 INFO L428 stractBuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2022-11-16 11:10:12,943 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-16 11:10:12,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 32514 transitions. [2022-11-16 11:10:13,015 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2022-11-16 11:10:13,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:13,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:13,017 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:13,017 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] [2022-11-16 11:10:13,017 INFO L748 eck$LassoCheckResult]: Stem: 66322#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); 66310#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; 66311#L225-1 [2022-11-16 11:10:13,017 INFO L750 eck$LassoCheckResult]: Loop: 66311#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 66629#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; 66630#L93 assume !(0 != main_~p1~0#1); 66617#L93-2 assume !(0 != main_~p2~0#1); 66619#L97-1 assume !(0 != main_~p3~0#1); 66606#L101-1 assume !(0 != main_~p4~0#1); 66608#L105-1 assume !(0 != main_~p5~0#1); 66710#L109-1 assume !(0 != main_~p6~0#1); 66708#L113-1 assume !(0 != main_~p7~0#1); 66705#L117-1 assume !(0 != main_~p8~0#1); 66702#L121-1 assume !(0 != main_~p9~0#1); 66700#L125-1 assume !(0 != main_~p10~0#1); 66699#L129-1 assume !(0 != main_~p11~0#1); 66698#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 66697#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 66696#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 66694#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 66691#L149-1 assume !(0 != main_~p1~0#1); 66688#L155-1 assume !(0 != main_~p2~0#1); 66686#L160-1 assume !(0 != main_~p3~0#1); 66530#L165-1 assume !(0 != main_~p4~0#1); 66531#L170-1 assume !(0 != main_~p5~0#1); 66516#L175-1 assume !(0 != main_~p6~0#1); 66517#L180-1 assume !(0 != main_~p7~0#1); 66683#L185-1 assume !(0 != main_~p8~0#1); 66671#L190-1 assume !(0 != main_~p9~0#1); 66673#L195-1 assume !(0 != main_~p10~0#1); 66661#L200-1 assume !(0 != main_~p11~0#1); 66660#L205-1 assume !(0 != main_~p12~0#1); 66651#L210-1 assume !(0 != main_~p13~0#1); 66650#L215-1 assume !(0 != main_~p14~0#1); 66639#L220-1 assume !(0 != main_~p15~0#1); 66311#L225-1 [2022-11-16 11:10:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2022-11-16 11:10:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:13,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436824701] [2022-11-16 11:10:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:13,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:13,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:13,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:13,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash 6342408, now seen corresponding path program 1 times [2022-11-16 11:10:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:13,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215249760] [2022-11-16 11:10:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:13,191 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 11:10:13,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:13,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215249760] [2022-11-16 11:10:13,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215249760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:13,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:13,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:13,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288293164] [2022-11-16 11:10:13,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:13,192 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:13,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:13,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:13,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:13,194 INFO L87 Difference]: Start difference. First operand 21762 states and 32514 transitions. cyclomatic complexity: 11264 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:13,426 INFO L93 Difference]: Finished difference Result 43010 states and 63490 transitions. [2022-11-16 11:10:13,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 63490 transitions. [2022-11-16 11:10:13,690 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2022-11-16 11:10:13,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 63490 transitions. [2022-11-16 11:10:13,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2022-11-16 11:10:13,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2022-11-16 11:10:13,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 63490 transitions. [2022-11-16 11:10:13,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:13,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2022-11-16 11:10:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 63490 transitions. [2022-11-16 11:10:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2022-11-16 11:10:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4761683329458266) internal successors, (63490), 43009 states have internal predecessors, (63490), 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 11:10:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 63490 transitions. [2022-11-16 11:10:15,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2022-11-16 11:10:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:15,477 INFO L428 stractBuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2022-11-16 11:10:15,477 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-16 11:10:15,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 63490 transitions. [2022-11-16 11:10:15,612 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2022-11-16 11:10:15,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:15,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:15,614 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:15,614 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] [2022-11-16 11:10:15,614 INFO L748 eck$LassoCheckResult]: Stem: 131098#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); 131087#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; 131088#L225-1 [2022-11-16 11:10:15,614 INFO L750 eck$LassoCheckResult]: Loop: 131088#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 131568#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; 131565#L93 assume !(0 != main_~p1~0#1); 131561#L93-2 assume !(0 != main_~p2~0#1); 131558#L97-1 assume !(0 != main_~p3~0#1); 131547#L101-1 assume !(0 != main_~p4~0#1); 131536#L105-1 assume !(0 != main_~p5~0#1); 131527#L109-1 assume !(0 != main_~p6~0#1); 131517#L113-1 assume !(0 != main_~p7~0#1); 131511#L117-1 assume !(0 != main_~p8~0#1); 131505#L121-1 assume !(0 != main_~p9~0#1); 131498#L125-1 assume !(0 != main_~p10~0#1); 131493#L129-1 assume !(0 != main_~p11~0#1); 131423#L133-1 assume !(0 != main_~p12~0#1); 131424#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 131409#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 131410#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 131392#L149-1 assume !(0 != main_~p1~0#1); 131393#L155-1 assume !(0 != main_~p2~0#1); 131373#L160-1 assume !(0 != main_~p3~0#1); 131372#L165-1 assume !(0 != main_~p4~0#1); 131349#L170-1 assume !(0 != main_~p5~0#1); 131350#L175-1 assume !(0 != main_~p6~0#1); 131327#L180-1 assume !(0 != main_~p7~0#1); 131328#L185-1 assume !(0 != main_~p8~0#1); 131309#L190-1 assume !(0 != main_~p9~0#1); 131311#L195-1 assume !(0 != main_~p10~0#1); 131469#L200-1 assume !(0 != main_~p11~0#1); 131464#L205-1 assume !(0 != main_~p12~0#1); 131465#L210-1 assume !(0 != main_~p13~0#1); 131576#L215-1 assume !(0 != main_~p14~0#1); 131573#L220-1 assume !(0 != main_~p15~0#1); 131088#L225-1 [2022-11-16 11:10:15,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2022-11-16 11:10:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971369007] [2022-11-16 11:10:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:15,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:15,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1682601334, now seen corresponding path program 1 times [2022-11-16 11:10:15,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:15,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586508158] [2022-11-16 11:10:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:15,673 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 11:10:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:15,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586508158] [2022-11-16 11:10:15,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586508158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:15,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:15,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:15,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989468967] [2022-11-16 11:10:15,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:15,675 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:15,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:15,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:15,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:15,676 INFO L87 Difference]: Start difference. First operand 43010 states and 63490 transitions. cyclomatic complexity: 21504 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:16,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:16,403 INFO L93 Difference]: Finished difference Result 84994 states and 123906 transitions. [2022-11-16 11:10:16,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 123906 transitions. [2022-11-16 11:10:17,202 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2022-11-16 11:10:17,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 123906 transitions. [2022-11-16 11:10:17,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2022-11-16 11:10:17,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2022-11-16 11:10:17,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 123906 transitions. [2022-11-16 11:10:17,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:17,802 INFO L218 hiAutomatonCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2022-11-16 11:10:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 123906 transitions. [2022-11-16 11:10:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2022-11-16 11:10:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.4578205520389675) internal successors, (123906), 84993 states have internal predecessors, (123906), 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 11:10:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 123906 transitions. [2022-11-16 11:10:19,328 INFO L240 hiAutomatonCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2022-11-16 11:10:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:19,329 INFO L428 stractBuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2022-11-16 11:10:19,329 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-11-16 11:10:19,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 123906 transitions. [2022-11-16 11:10:19,787 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2022-11-16 11:10:19,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:19,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:19,788 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:19,789 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] [2022-11-16 11:10:19,789 INFO L748 eck$LassoCheckResult]: Stem: 259116#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); 259105#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; 259106#L225-1 [2022-11-16 11:10:19,789 INFO L750 eck$LassoCheckResult]: Loop: 259106#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 260093#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; 260071#L93 assume !(0 != main_~p1~0#1); 260073#L93-2 assume !(0 != main_~p2~0#1); 260053#L97-1 assume !(0 != main_~p3~0#1); 260054#L101-1 assume !(0 != main_~p4~0#1); 260027#L105-1 assume !(0 != main_~p5~0#1); 260029#L109-1 assume !(0 != main_~p6~0#1); 260313#L113-1 assume !(0 != main_~p7~0#1); 260283#L117-1 assume !(0 != main_~p8~0#1); 260285#L121-1 assume !(0 != main_~p9~0#1); 260309#L125-1 assume !(0 != main_~p10~0#1); 260308#L129-1 assume !(0 != main_~p11~0#1); 260306#L133-1 assume !(0 != main_~p12~0#1); 260304#L137-1 assume !(0 != main_~p13~0#1); 260302#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 260300#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 260297#L149-1 assume !(0 != main_~p1~0#1); 260293#L155-1 assume !(0 != main_~p2~0#1); 260290#L160-1 assume !(0 != main_~p3~0#1); 260225#L165-1 assume !(0 != main_~p4~0#1); 260226#L170-1 assume !(0 != main_~p5~0#1); 260202#L175-1 assume !(0 != main_~p6~0#1); 260204#L180-1 assume !(0 != main_~p7~0#1); 260181#L185-1 assume !(0 != main_~p8~0#1); 260182#L190-1 assume !(0 != main_~p9~0#1); 260176#L195-1 assume !(0 != main_~p10~0#1); 260178#L200-1 assume !(0 != main_~p11~0#1); 260125#L205-1 assume !(0 != main_~p12~0#1); 260127#L210-1 assume !(0 != main_~p13~0#1); 260112#L215-1 assume !(0 != main_~p14~0#1); 260111#L220-1 assume !(0 != main_~p15~0#1); 259106#L225-1 [2022-11-16 11:10:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2022-11-16 11:10:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657387489] [2022-11-16 11:10:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:19,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:19,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:19,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:19,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 618221256, now seen corresponding path program 1 times [2022-11-16 11:10:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:19,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93359510] [2022-11-16 11:10:19,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:19,825 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 11:10:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:19,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93359510] [2022-11-16 11:10:19,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93359510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:19,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:19,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898373862] [2022-11-16 11:10:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:19,827 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:19,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:19,828 INFO L87 Difference]: Start difference. First operand 84994 states and 123906 transitions. cyclomatic complexity: 40960 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:20,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:20,508 INFO L93 Difference]: Finished difference Result 167938 states and 241666 transitions. [2022-11-16 11:10:20,508 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167938 states and 241666 transitions. [2022-11-16 11:10:21,510 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2022-11-16 11:10:22,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167938 states to 167938 states and 241666 transitions. [2022-11-16 11:10:22,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167938 [2022-11-16 11:10:22,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167938 [2022-11-16 11:10:22,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167938 states and 241666 transitions. [2022-11-16 11:10:22,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:22,358 INFO L218 hiAutomatonCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2022-11-16 11:10:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167938 states and 241666 transitions. [2022-11-16 11:10:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167938 to 167938. [2022-11-16 11:10:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167938 states, 167938 states have (on average 1.4390191618335337) internal successors, (241666), 167937 states have internal predecessors, (241666), 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 11:10:25,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167938 states to 167938 states and 241666 transitions. [2022-11-16 11:10:25,339 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2022-11-16 11:10:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:25,340 INFO L428 stractBuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2022-11-16 11:10:25,341 INFO L335 stractBuchiCegarLoop]: ======== Iteration 13 ============ [2022-11-16 11:10:25,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167938 states and 241666 transitions. [2022-11-16 11:10:25,801 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2022-11-16 11:10:25,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:25,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:25,803 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:25,803 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] [2022-11-16 11:10:25,803 INFO L748 eck$LassoCheckResult]: Stem: 512052#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); 512037#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; 512038#L225-1 [2022-11-16 11:10:25,803 INFO L750 eck$LassoCheckResult]: Loop: 512038#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 512371#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; 512369#L93 assume !(0 != main_~p1~0#1); 512367#L93-2 assume !(0 != main_~p2~0#1); 512366#L97-1 assume !(0 != main_~p3~0#1); 512364#L101-1 assume !(0 != main_~p4~0#1); 512362#L105-1 assume !(0 != main_~p5~0#1); 512360#L109-1 assume !(0 != main_~p6~0#1); 512358#L113-1 assume !(0 != main_~p7~0#1); 512356#L117-1 assume !(0 != main_~p8~0#1); 512354#L121-1 assume !(0 != main_~p9~0#1); 512352#L125-1 assume !(0 != main_~p10~0#1); 512351#L129-1 assume !(0 != main_~p11~0#1); 512349#L133-1 assume !(0 != main_~p12~0#1); 512345#L137-1 assume !(0 != main_~p13~0#1); 512343#L141-1 assume !(0 != main_~p14~0#1); 512340#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 512336#L149-1 assume !(0 != main_~p1~0#1); 512330#L155-1 assume !(0 != main_~p2~0#1); 512325#L160-1 assume !(0 != main_~p3~0#1); 512318#L165-1 assume !(0 != main_~p4~0#1); 512312#L170-1 assume !(0 != main_~p5~0#1); 512306#L175-1 assume !(0 != main_~p6~0#1); 512300#L180-1 assume !(0 != main_~p7~0#1); 512294#L185-1 assume !(0 != main_~p8~0#1); 512288#L190-1 assume !(0 != main_~p9~0#1); 512282#L195-1 assume !(0 != main_~p10~0#1); 512277#L200-1 assume !(0 != main_~p11~0#1); 512270#L205-1 assume !(0 != main_~p12~0#1); 512261#L210-1 assume !(0 != main_~p13~0#1); 512262#L215-1 assume !(0 != main_~p14~0#1); 512373#L220-1 assume !(0 != main_~p15~0#1); 512038#L225-1 [2022-11-16 11:10:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2022-11-16 11:10:25,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:25,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739005673] [2022-11-16 11:10:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:25,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:25,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:25,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash -970126646, now seen corresponding path program 1 times [2022-11-16 11:10:25,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:25,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875246055] [2022-11-16 11:10:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,839 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 11:10:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:25,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875246055] [2022-11-16 11:10:25,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875246055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:25,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:25,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:10:25,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380681360] [2022-11-16 11:10:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:25,841 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:10:25,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:25,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:25,842 INFO L87 Difference]: Start difference. First operand 167938 states and 241666 transitions. cyclomatic complexity: 77824 Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 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 11:10:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:27,305 INFO L93 Difference]: Finished difference Result 331778 states and 471042 transitions. [2022-11-16 11:10:27,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331778 states and 471042 transitions. [2022-11-16 11:10:29,437 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2022-11-16 11:10:30,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331778 states to 331778 states and 471042 transitions. [2022-11-16 11:10:30,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 331778 [2022-11-16 11:10:30,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 331778 [2022-11-16 11:10:30,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331778 states and 471042 transitions. [2022-11-16 11:10:30,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:30,989 INFO L218 hiAutomatonCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2022-11-16 11:10:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331778 states and 471042 transitions. [2022-11-16 11:10:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331778 to 331778. [2022-11-16 11:10:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331778 states, 331778 states have (on average 1.419750556094738) internal successors, (471042), 331777 states have internal predecessors, (471042), 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 11:10:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331778 states to 331778 states and 471042 transitions. [2022-11-16 11:10:36,464 INFO L240 hiAutomatonCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2022-11-16 11:10:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:36,466 INFO L428 stractBuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2022-11-16 11:10:36,466 INFO L335 stractBuchiCegarLoop]: ======== Iteration 14 ============ [2022-11-16 11:10:36,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331778 states and 471042 transitions. [2022-11-16 11:10:37,310 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2022-11-16 11:10:37,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:10:37,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:10:37,313 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-16 11:10:37,314 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] [2022-11-16 11:10:37,314 INFO L748 eck$LassoCheckResult]: Stem: 1011773#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); 1011759#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; 1011760#L225-1 [2022-11-16 11:10:37,314 INFO L750 eck$LassoCheckResult]: Loop: 1011760#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1012553#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; 1012551#L93 assume !(0 != main_~p1~0#1); 1012549#L93-2 assume !(0 != main_~p2~0#1); 1012548#L97-1 assume !(0 != main_~p3~0#1); 1012546#L101-1 assume !(0 != main_~p4~0#1); 1012544#L105-1 assume !(0 != main_~p5~0#1); 1012545#L109-1 assume !(0 != main_~p6~0#1); 1012707#L113-1 assume !(0 != main_~p7~0#1); 1012702#L117-1 assume !(0 != main_~p8~0#1); 1012697#L121-1 assume !(0 != main_~p9~0#1); 1012691#L125-1 assume !(0 != main_~p10~0#1); 1012687#L129-1 assume !(0 != main_~p11~0#1); 1012683#L133-1 assume !(0 != main_~p12~0#1); 1012678#L137-1 assume !(0 != main_~p13~0#1); 1012674#L141-1 assume !(0 != main_~p14~0#1); 1012668#L145-1 assume !(0 != main_~p15~0#1); 1012661#L149-1 assume !(0 != main_~p1~0#1); 1012653#L155-1 assume !(0 != main_~p2~0#1); 1012642#L160-1 assume !(0 != main_~p3~0#1); 1012638#L165-1 assume !(0 != main_~p4~0#1); 1012636#L170-1 assume !(0 != main_~p5~0#1); 1012632#L175-1 assume !(0 != main_~p6~0#1); 1012628#L180-1 assume !(0 != main_~p7~0#1); 1012624#L185-1 assume !(0 != main_~p8~0#1); 1012620#L190-1 assume !(0 != main_~p9~0#1); 1012616#L195-1 assume !(0 != main_~p10~0#1); 1012570#L200-1 assume !(0 != main_~p11~0#1); 1012560#L205-1 assume !(0 != main_~p12~0#1); 1012558#L210-1 assume !(0 != main_~p13~0#1); 1012556#L215-1 assume !(0 != main_~p14~0#1); 1012554#L220-1 assume !(0 != main_~p15~0#1); 1011760#L225-1 [2022-11-16 11:10:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 14 times [2022-11-16 11:10:37,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:37,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309284827] [2022-11-16 11:10:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:37,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:37,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1991195000, now seen corresponding path program 1 times [2022-11-16 11:10:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:37,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573215939] [2022-11-16 11:10:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:37,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1845576266, now seen corresponding path program 1 times [2022-11-16 11:10:37,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:37,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419539358] [2022-11-16 11:10:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:37,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:37,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:10:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:38,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:10:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:10:38,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:10:38 BoogieIcfgContainer [2022-11-16 11:10:38,174 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:10:38,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:10:38,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:10:38,176 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:10:38,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:08" (3/4) ... [2022-11-16 11:10:38,179 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 11:10:39,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:10:39,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:10:39,112 INFO L158 Benchmark]: Toolchain (without parser) took 31390.42ms. Allocated memory was 94.4MB in the beginning and 13.5GB in the end (delta: 13.4GB). Free memory was 56.8MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2022-11-16 11:10:39,113 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:10:39,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.40ms. Allocated memory is still 94.4MB. Free memory was 56.7MB in the beginning and 70.4MB in the end (delta: -13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 11:10:39,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.78ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:10:39,114 INFO L158 Benchmark]: Boogie Preprocessor took 54.21ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:10:39,114 INFO L158 Benchmark]: RCFGBuilder took 522.27ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 52.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 11:10:39,114 INFO L158 Benchmark]: BuchiAutomizer took 29498.91ms. Allocated memory was 94.4MB in the beginning and 13.5GB in the end (delta: 13.4GB). Free memory was 52.1MB in the beginning and 10.5GB in the end (delta: -10.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2022-11-16 11:10:39,115 INFO L158 Benchmark]: Witness Printer took 936.37ms. Allocated memory is still 13.5GB. Free memory was 10.5GB in the beginning and 10.9GB in the end (delta: -426.9MB). Peak memory consumption was 163.6MB. Max. memory is 16.1GB. [2022-11-16 11:10:39,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory is still 73.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.40ms. Allocated memory is still 94.4MB. Free memory was 56.7MB in the beginning and 70.4MB in the end (delta: -13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.78ms. Allocated memory is still 94.4MB. Free memory was 70.4MB in the beginning and 68.6MB in the end (delta: 1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.21ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 522.27ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 52.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 29498.91ms. Allocated memory was 94.4MB in the beginning and 13.5GB in the end (delta: 13.4GB). Free memory was 52.1MB in the beginning and 10.5GB in the end (delta: -10.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 936.37ms. Allocated memory is still 13.5GB. Free memory was 10.5GB in the beginning and 10.9GB in the end (delta: -426.9MB). Peak memory consumption was 163.6MB. 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 13 terminating modules (13 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.13 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 331778 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 29.3s and 14 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.1s. Büchi inclusion checks took 24.7s. Highest rank in rank-based complementation 0. Minimization of det autom 13. Minimization of nondet autom 0. Automata minimization 12.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 6.8s Buchi closure took 0.3s. 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, 799 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 799 mSDsluCounter, 2497 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 967 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 1530 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI13 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 FALSE !(p2 != 0) [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 FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 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 FALSE !(p14 != 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 FALSE !(p2 != 0) [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 FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 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 FALSE !(p14 != 0) [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:10:39,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_702cac50-c3d0-4fda-8f83-4f882488268a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)