./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8 --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 c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 --- 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-2329fc7 [2022-12-13 15:05:54,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:05:54,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:05:54,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:05:54,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:05:54,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:05:54,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:05:54,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:05:54,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:05:54,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:05:54,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:05:54,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:05:54,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:05:54,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:05:54,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:05:54,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:05:54,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:05:54,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:05:54,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:05:54,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:05:54,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:05:54,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:05:54,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:05:54,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:05:54,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:05:54,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:05:54,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:05:54,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:05:54,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:05:54,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:05:54,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:05:54,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:05:54,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:05:54,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:05:54,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:05:54,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:05:54,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:05:54,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:05:54,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:05:54,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:05:54,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:05:54,332 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 15:05:54,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:05:54,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:05:54,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:05:54,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:05:54,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:05:54,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:05:54,355 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:05:54,356 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 15:05:54,356 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 15:05:54,356 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 15:05:54,356 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 15:05:54,356 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 15:05:54,357 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 15:05:54,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:05:54,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:05:54,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:05:54,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:05:54,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:05:54,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:05:54,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 15:05:54,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 15:05:54,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 15:05:54,359 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:05:54,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:05:54,359 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 15:05:54,359 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:05:54,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 15:05:54,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:05:54,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:05:54,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:05:54,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:05:54,361 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 15:05:54,361 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_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2022-12-13 15:05:54,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:05:54,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:05:54,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:05:54,577 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:05:54,577 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:05:54,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/locks/test_locks_6.c [2022-12-13 15:05:57,098 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:05:57,262 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:05:57,262 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/sv-benchmarks/c/locks/test_locks_6.c [2022-12-13 15:05:57,268 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/data/a95de45a4/aca1d74e385c4e2eada64bcf51fab0e1/FLAG38e5064a5 [2022-12-13 15:05:57,667 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/data/a95de45a4/aca1d74e385c4e2eada64bcf51fab0e1 [2022-12-13 15:05:57,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:05:57,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:05:57,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:05:57,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:05:57,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:05:57,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36115edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57, skipping insertion in model container [2022-12-13 15:05:57,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:05:57,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:05:57,792 WARN L237 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_c281893c-adb9-4502-8c07-4489c325f328/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2022-12-13 15:05:57,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:05:57,803 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:05:57,816 WARN L237 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_c281893c-adb9-4502-8c07-4489c325f328/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2022-12-13 15:05:57,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:05:57,825 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:05:57,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57 WrapperNode [2022-12-13 15:05:57,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:05:57,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:05:57,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:05:57,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:05:57,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,849 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 87 [2022-12-13 15:05:57,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:05:57,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:05:57,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:05:57,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:05:57,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:05:57,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:05:57,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:05:57,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:05:57,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (1/1) ... [2022-12-13 15:05:57,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 15:05:57,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:05:57,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 15:05:57,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 15:05:57,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:05:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:05:57,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:05:57,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:05:57,965 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:05:57,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:05:58,061 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:05:58,065 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:05:58,065 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:05:58,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:05:58 BoogieIcfgContainer [2022-12-13 15:05:58,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:05:58,067 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 15:05:58,067 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 15:05:58,070 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 15:05:58,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:05:58,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 03:05:57" (1/3) ... [2022-12-13 15:05:58,071 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1014f29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:05:58, skipping insertion in model container [2022-12-13 15:05:58,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:05:58,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:05:57" (2/3) ... [2022-12-13 15:05:58,071 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1014f29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 03:05:58, skipping insertion in model container [2022-12-13 15:05:58,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 15:05:58,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:05:58" (3/3) ... [2022-12-13 15:05:58,072 INFO L332 chiAutomizerObserver]: Analyzing ICFG test_locks_6.c [2022-12-13 15:05:58,115 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 15:05:58,115 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 15:05:58,115 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 15:05:58,115 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 15:05:58,115 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 15:05:58,116 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 15:05:58,116 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 15:05:58,116 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 15:05:58,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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) [2022-12-13 15:05:58,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2022-12-13 15:05:58,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,137 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,137 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 15:05:58,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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) [2022-12-13 15:05:58,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2022-12-13 15:05:58,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,139 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,139 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,144 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 10#L99-1true [2022-12-13 15:05:58,145 INFO L750 eck$LassoCheckResult]: Loop: 10#L99-1true assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 6#L31true 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; 14#L48true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 3#L48-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 27#L52-1true assume !(0 != main_~p3~0#1); 18#L56-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 5#L60-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 22#L64-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 21#L68-1true assume !(0 != main_~p1~0#1); 26#L74-1true assume !(0 != main_~p2~0#1); 12#L79-1true assume !(0 != main_~p3~0#1); 20#L84-1true assume !(0 != main_~p4~0#1); 13#L89-1true assume !(0 != main_~p5~0#1); 9#L94-1true assume !(0 != main_~p6~0#1); 10#L99-1true [2022-12-13 15:05:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 15:05:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878237777] [2022-12-13 15:05:58,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash -11500681, now seen corresponding path program 1 times [2022-12-13 15:05:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592554966] [2022-12-13 15:05:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:05:58,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592554966] [2022-12-13 15:05:58,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592554966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:58,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:58,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:58,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818288230] [2022-12-13 15:05:58,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:58,297 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 15:05:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:58,323 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 1.8076923076923077) internal successors, (47), 26 states have internal predecessors, (47), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-13 15:05:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:58,347 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2022-12-13 15:05:58,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 82 transitions. [2022-12-13 15:05:58,350 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2022-12-13 15:05:58,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 41 states and 63 transitions. [2022-12-13 15:05:58,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-12-13 15:05:58,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2022-12-13 15:05:58,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 63 transitions. [2022-12-13 15:05:58,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:05:58,355 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 63 transitions. [2022-12-13 15:05:58,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 63 transitions. [2022-12-13 15:05:58,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-12-13 15:05:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 40 states have internal predecessors, (63), 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) [2022-12-13 15:05:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2022-12-13 15:05:58,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 63 transitions. [2022-12-13 15:05:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:58,378 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2022-12-13 15:05:58,379 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 15:05:58,379 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2022-12-13 15:05:58,379 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2022-12-13 15:05:58,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,380 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,380 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,380 INFO L748 eck$LassoCheckResult]: Stem: 109#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 102#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 101#L99-1 [2022-12-13 15:05:58,380 INFO L750 eck$LassoCheckResult]: Loop: 101#L99-1 assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 108#L31 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; 117#L48 assume !(0 != main_~p1~0#1); 87#L48-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 88#L52-1 assume !(0 != main_~p3~0#1); 116#L56-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 115#L60-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 114#L64-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 113#L68-1 assume !(0 != main_~p1~0#1); 110#L74-1 assume !(0 != main_~p2~0#1); 106#L79-1 assume !(0 != main_~p3~0#1); 90#L84-1 assume !(0 != main_~p4~0#1); 94#L89-1 assume !(0 != main_~p5~0#1); 92#L94-1 assume !(0 != main_~p6~0#1); 101#L99-1 [2022-12-13 15:05:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-12-13 15:05:58,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882315215] [2022-12-13 15:05:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,396 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash 246664757, now seen corresponding path program 1 times [2022-12-13 15:05:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925013717] [2022-12-13 15:05:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:05:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:58,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925013717] [2022-12-13 15:05:58,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925013717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:58,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:58,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233885115] [2022-12-13 15:05:58,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:58,442 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 15:05:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:58,443 INFO L87 Difference]: Start difference. First operand 41 states and 63 transitions. cyclomatic complexity: 24 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-13 15:05:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:58,461 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2022-12-13 15:05:58,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 118 transitions. [2022-12-13 15:05:58,465 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2022-12-13 15:05:58,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 78 states and 118 transitions. [2022-12-13 15:05:58,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2022-12-13 15:05:58,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2022-12-13 15:05:58,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 118 transitions. [2022-12-13 15:05:58,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:05:58,469 INFO L218 hiAutomatonCegarLoop]: Abstraction has 78 states and 118 transitions. [2022-12-13 15:05:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 118 transitions. [2022-12-13 15:05:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-13 15:05:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.5128205128205128) internal successors, (118), 77 states have internal predecessors, (118), 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) [2022-12-13 15:05:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2022-12-13 15:05:58,478 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78 states and 118 transitions. [2022-12-13 15:05:58,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:58,480 INFO L428 stractBuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2022-12-13 15:05:58,480 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 15:05:58,480 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 118 transitions. [2022-12-13 15:05:58,482 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2022-12-13 15:05:58,482 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,483 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,483 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 225#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 226#L99-1 [2022-12-13 15:05:58,484 INFO L750 eck$LassoCheckResult]: Loop: 226#L99-1 assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 263#L31 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; 260#L48 assume !(0 != main_~p1~0#1); 259#L48-2 assume !(0 != main_~p2~0#1); 238#L52-1 assume !(0 != main_~p3~0#1); 239#L56-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 255#L60-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 254#L64-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 253#L68-1 assume !(0 != main_~p1~0#1); 240#L74-1 assume !(0 != main_~p2~0#1); 242#L79-1 assume !(0 != main_~p3~0#1); 288#L84-1 assume !(0 != main_~p4~0#1); 286#L89-1 assume !(0 != main_~p5~0#1); 270#L94-1 assume !(0 != main_~p6~0#1); 226#L99-1 [2022-12-13 15:05:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,484 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-12-13 15:05:58,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172897529] [2022-12-13 15:05:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,497 INFO L85 PathProgramCache]: Analyzing trace with hash 947729335, now seen corresponding path program 1 times [2022-12-13 15:05:58,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988481896] [2022-12-13 15:05:58,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:05:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:58,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988481896] [2022-12-13 15:05:58,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988481896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:58,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:58,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:58,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212533657] [2022-12-13 15:05:58,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:58,527 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 15:05:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:58,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:58,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:58,528 INFO L87 Difference]: Start difference. First operand 78 states and 118 transitions. cyclomatic complexity: 44 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-13 15:05:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:58,543 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2022-12-13 15:05:58,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 222 transitions. [2022-12-13 15:05:58,547 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2022-12-13 15:05:58,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 222 transitions. [2022-12-13 15:05:58,549 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2022-12-13 15:05:58,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2022-12-13 15:05:58,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 222 transitions. [2022-12-13 15:05:58,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:05:58,551 INFO L218 hiAutomatonCegarLoop]: Abstraction has 150 states and 222 transitions. [2022-12-13 15:05:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 222 transitions. [2022-12-13 15:05:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-13 15:05:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.48) internal successors, (222), 149 states have internal predecessors, (222), 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) [2022-12-13 15:05:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2022-12-13 15:05:58,559 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 222 transitions. [2022-12-13 15:05:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:58,560 INFO L428 stractBuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2022-12-13 15:05:58,560 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 15:05:58,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 222 transitions. [2022-12-13 15:05:58,561 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2022-12-13 15:05:58,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,562 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,562 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,562 INFO L748 eck$LassoCheckResult]: Stem: 469#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 459#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 460#L99-1 [2022-12-13 15:05:58,562 INFO L750 eck$LassoCheckResult]: Loop: 460#L99-1 assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 501#L31 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; 496#L48 assume !(0 != main_~p1~0#1); 491#L48-2 assume !(0 != main_~p2~0#1); 484#L52-1 assume !(0 != main_~p3~0#1); 485#L56-1 assume !(0 != main_~p4~0#1); 544#L60-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 543#L64-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 537#L68-1 assume !(0 != main_~p1~0#1); 539#L74-1 assume !(0 != main_~p2~0#1); 536#L79-1 assume !(0 != main_~p3~0#1); 534#L84-1 assume !(0 != main_~p4~0#1); 533#L89-1 assume !(0 != main_~p5~0#1); 515#L94-1 assume !(0 != main_~p6~0#1); 460#L99-1 [2022-12-13 15:05:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2022-12-13 15:05:58,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767600396] [2022-12-13 15:05:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1627787705, now seen corresponding path program 1 times [2022-12-13 15:05:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448771713] [2022-12-13 15:05:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:05:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:58,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448771713] [2022-12-13 15:05:58,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448771713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:58,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:58,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:05:58,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836101953] [2022-12-13 15:05:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:58,592 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 15:05:58,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:58,593 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. cyclomatic complexity: 80 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-13 15:05:58,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:58,606 INFO L93 Difference]: Finished difference Result 290 states and 418 transitions. [2022-12-13 15:05:58,607 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 418 transitions. [2022-12-13 15:05:58,610 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2022-12-13 15:05:58,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 290 states and 418 transitions. [2022-12-13 15:05:58,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2022-12-13 15:05:58,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 290 [2022-12-13 15:05:58,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 290 states and 418 transitions. [2022-12-13 15:05:58,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:05:58,613 INFO L218 hiAutomatonCegarLoop]: Abstraction has 290 states and 418 transitions. [2022-12-13 15:05:58,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states and 418 transitions. [2022-12-13 15:05:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2022-12-13 15:05:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.4413793103448276) internal successors, (418), 289 states have internal predecessors, (418), 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) [2022-12-13 15:05:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 418 transitions. [2022-12-13 15:05:58,623 INFO L240 hiAutomatonCegarLoop]: Abstraction has 290 states and 418 transitions. [2022-12-13 15:05:58,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:58,624 INFO L428 stractBuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2022-12-13 15:05:58,624 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 15:05:58,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 418 transitions. [2022-12-13 15:05:58,626 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2022-12-13 15:05:58,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,627 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,627 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,627 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,627 INFO L748 eck$LassoCheckResult]: Stem: 919#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 907#L99-1 [2022-12-13 15:05:58,627 INFO L750 eck$LassoCheckResult]: Loop: 907#L99-1 assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 961#L31 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; 959#L48 assume !(0 != main_~p1~0#1); 955#L48-2 assume !(0 != main_~p2~0#1); 953#L52-1 assume !(0 != main_~p3~0#1); 949#L56-1 assume !(0 != main_~p4~0#1); 945#L60-1 assume !(0 != main_~p5~0#1); 943#L64-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 940#L68-1 assume !(0 != main_~p1~0#1); 941#L74-1 assume !(0 != main_~p2~0#1); 977#L79-1 assume !(0 != main_~p3~0#1); 972#L84-1 assume !(0 != main_~p4~0#1); 968#L89-1 assume !(0 != main_~p5~0#1); 965#L94-1 assume !(0 != main_~p6~0#1); 907#L99-1 [2022-12-13 15:05:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2022-12-13 15:05:58,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342234787] [2022-12-13 15:05:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 818441079, now seen corresponding path program 1 times [2022-12-13 15:05:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829314507] [2022-12-13 15:05:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:05:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:05:58,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:05:58,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829314507] [2022-12-13 15:05:58,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829314507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:05:58,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:05:58,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:05:58,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788770020] [2022-12-13 15:05:58,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:05:58,653 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 15:05:58,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:05:58,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:05:58,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:05:58,653 INFO L87 Difference]: Start difference. First operand 290 states and 418 transitions. cyclomatic complexity: 144 Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-13 15:05:58,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:05:58,663 INFO L93 Difference]: Finished difference Result 562 states and 786 transitions. [2022-12-13 15:05:58,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 562 states and 786 transitions. [2022-12-13 15:05:58,667 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2022-12-13 15:05:58,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 562 states to 562 states and 786 transitions. [2022-12-13 15:05:58,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 562 [2022-12-13 15:05:58,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 562 [2022-12-13 15:05:58,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 562 states and 786 transitions. [2022-12-13 15:05:58,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:05:58,673 INFO L218 hiAutomatonCegarLoop]: Abstraction has 562 states and 786 transitions. [2022-12-13 15:05:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states and 786 transitions. [2022-12-13 15:05:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-12-13 15:05:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 562 states have (on average 1.398576512455516) internal successors, (786), 561 states have internal predecessors, (786), 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) [2022-12-13 15:05:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 786 transitions. [2022-12-13 15:05:58,696 INFO L240 hiAutomatonCegarLoop]: Abstraction has 562 states and 786 transitions. [2022-12-13 15:05:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:05:58,697 INFO L428 stractBuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2022-12-13 15:05:58,697 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 15:05:58,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 562 states and 786 transitions. [2022-12-13 15:05:58,700 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2022-12-13 15:05:58,700 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 15:05:58,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 15:05:58,701 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 15:05:58,701 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:05:58,701 INFO L748 eck$LassoCheckResult]: Stem: 1775#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); 1764#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;havoc main_~cond~0#1; 1765#L99-1 [2022-12-13 15:05:58,701 INFO L750 eck$LassoCheckResult]: Loop: 1765#L99-1 assume !false;main_~cond~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1; 1831#L31 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; 1829#L48 assume !(0 != main_~p1~0#1); 1825#L48-2 assume !(0 != main_~p2~0#1); 1823#L52-1 assume !(0 != main_~p3~0#1); 1819#L56-1 assume !(0 != main_~p4~0#1); 1815#L60-1 assume !(0 != main_~p5~0#1); 1811#L64-1 assume !(0 != main_~p6~0#1); 1808#L68-1 assume !(0 != main_~p1~0#1); 1809#L74-1 assume !(0 != main_~p2~0#1); 1847#L79-1 assume !(0 != main_~p3~0#1); 1842#L84-1 assume !(0 != main_~p4~0#1); 1838#L89-1 assume !(0 != main_~p5~0#1); 1834#L94-1 assume !(0 != main_~p6~0#1); 1765#L99-1 [2022-12-13 15:05:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,702 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2022-12-13 15:05:58,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977146222] [2022-12-13 15:05:58,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1701518855, now seen corresponding path program 1 times [2022-12-13 15:05:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821625297] [2022-12-13 15:05:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:05:58,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1159342651, now seen corresponding path program 1 times [2022-12-13 15:05:58,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:05:58,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565734446] [2022-12-13 15:05:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:05:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:05:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:05:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:05:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:05:58,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 03:05:58 BoogieIcfgContainer [2022-12-13 15:05:58,975 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 15:05:58,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:05:58,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:05:58,975 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:05:58,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:05:58" (3/4) ... [2022-12-13 15:05:58,977 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 15:05:59,001 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:05:59,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:05:59,002 INFO L158 Benchmark]: Toolchain (without parser) took 1331.82ms. Allocated memory is still 153.1MB. Free memory was 118.4MB in the beginning and 63.1MB in the end (delta: 55.3MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,002 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 115.3MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:05:59,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.32ms. Allocated memory is still 153.1MB. Free memory was 118.0MB in the beginning and 107.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.52ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 106.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,003 INFO L158 Benchmark]: Boogie Preprocessor took 13.91ms. Allocated memory is still 153.1MB. Free memory was 106.3MB in the beginning and 104.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:05:59,003 INFO L158 Benchmark]: RCFGBuilder took 202.38ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 94.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,003 INFO L158 Benchmark]: BuchiAutomizer took 907.62ms. Allocated memory is still 153.1MB. Free memory was 93.7MB in the beginning and 65.2MB in the end (delta: 28.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,004 INFO L158 Benchmark]: Witness Printer took 26.45ms. Allocated memory is still 153.1MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:05:59,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 115.3MB. Free memory is still 91.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.32ms. Allocated memory is still 153.1MB. Free memory was 118.0MB in the beginning and 107.9MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.52ms. Allocated memory is still 153.1MB. Free memory was 107.9MB in the beginning and 106.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.91ms. Allocated memory is still 153.1MB. Free memory was 106.3MB in the beginning and 104.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 202.38ms. Allocated memory is still 153.1MB. Free memory was 104.9MB in the beginning and 94.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 907.62ms. Allocated memory is still 153.1MB. Free memory was 93.7MB in the beginning and 65.2MB in the end (delta: 28.5MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 26.45ms. Allocated memory is still 153.1MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (5 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.5 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 562 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. 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, 130 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 405 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 256 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI5 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: 29]: 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; [L27] int cond; Loop: [L29] COND TRUE 1 [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 29]: 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; [L27] int cond; Loop: [L29] COND TRUE 1 [L30] cond = __VERIFIER_nondet_int() [L31] COND FALSE !(cond == 0) [L34] lk1 = 0 [L36] lk2 = 0 [L38] lk3 = 0 [L40] lk4 = 0 [L42] lk5 = 0 [L44] lk6 = 0 [L48] COND FALSE !(p1 != 0) [L52] COND FALSE !(p2 != 0) [L56] COND FALSE !(p3 != 0) [L60] COND FALSE !(p4 != 0) [L64] COND FALSE !(p5 != 0) [L68] COND FALSE !(p6 != 0) [L74] COND FALSE !(p1 != 0) [L79] COND FALSE !(p2 != 0) [L84] COND FALSE !(p3 != 0) [L89] COND FALSE !(p4 != 0) [L94] COND FALSE !(p5 != 0) [L99] COND FALSE !(p6 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-12-13 15:05:59,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c281893c-adb9-4502-8c07-4489c325f328/bin/uautomizer-uyxdKDjOR8/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)