./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg --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 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:03:40,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:03:40,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:03:40,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:03:40,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:03:40,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:03:40,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:03:40,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:03:40,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:03:40,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:03:40,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:03:40,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:03:40,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:03:40,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:03:40,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:03:40,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:03:40,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:03:40,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:03:40,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:03:40,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:03:40,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:03:40,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:03:40,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:03:40,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:03:40,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:03:40,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:03:40,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:03:40,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:03:40,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:03:40,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:03:40,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:03:40,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:03:40,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:03:40,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:03:40,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:03:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:03:40,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:03:40,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:03:40,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:03:40,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:03:40,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:03:40,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:03:40,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:03:40,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:03:40,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:03:40,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:03:40,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:03:40,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:03:40,725 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:03:40,725 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:03:40,725 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:03:40,726 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:03:40,727 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:03:40,727 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:03:40,727 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:03:40,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:03:40,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:03:40,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:03:40,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:03:40,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:03:40,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:03:40,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:03:40,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:03:40,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:03:40,730 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:03:40,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:03:40,730 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:03:40,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:03:40,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:03:40,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:03:40,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:03:40,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:03:40,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:03:40,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:03:40,735 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:03:40,735 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_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2021-10-28 09:03:41,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:03:41,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:03:41,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:03:41,054 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:03:41,056 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:03:41,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-28 09:03:41,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/data/97bab3d0a/cbe78cd60c20477ab26d8e9687f74f73/FLAGa306430b0 [2021-10-28 09:03:41,735 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:03:41,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/sv-benchmarks/c/locks/test_locks_6.c [2021-10-28 09:03:41,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/data/97bab3d0a/cbe78cd60c20477ab26d8e9687f74f73/FLAGa306430b0 [2021-10-28 09:03:42,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/data/97bab3d0a/cbe78cd60c20477ab26d8e9687f74f73 [2021-10-28 09:03:42,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:03:42,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:03:42,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:42,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:03:42,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:03:42,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f85384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42, skipping insertion in model container [2021-10-28 09:03:42,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:03:42,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:03:42,492 WARN L228 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_4da26e37-ab17-46bd-b0a1-39056d0cc270/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-28 09:03:42,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:42,513 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:03:42,567 WARN L228 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_4da26e37-ab17-46bd-b0a1-39056d0cc270/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-28 09:03:42,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:42,589 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:03:42,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42 WrapperNode [2021-10-28 09:03:42,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:42,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:42,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:03:42,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:03:42,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:03:42,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:03:42,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:03:42,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:03:42,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,687 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:03:42,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:03:42,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:03:42,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:03:42,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (1/1) ... [2021-10-28 09:03:42,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:03:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:03:42,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:03:42,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:03:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:03:42,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:03:42,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:03:42,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:03:43,166 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:03:43,166 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:03:43,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:43 BoogieIcfgContainer [2021-10-28 09:03:43,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:03:43,170 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:03:43,170 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:03:43,179 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:03:43,180 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:03:43,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:03:42" (1/3) ... [2021-10-28 09:03:43,185 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f3bb774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:03:43, skipping insertion in model container [2021-10-28 09:03:43,185 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:03:43,185 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:42" (2/3) ... [2021-10-28 09:03:43,186 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6f3bb774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:03:43, skipping insertion in model container [2021-10-28 09:03:43,186 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:03:43,186 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:43" (3/3) ... [2021-10-28 09:03:43,188 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_6.c [2021-10-28 09:03:43,288 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:03:43,289 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:03:43,289 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:03:43,289 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:03:43,290 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:03:43,290 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:03:43,290 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:03:43,290 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:03:43,309 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) [2021-10-28 09:03:43,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-28 09:03:43,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:43,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:43,354 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:43,365 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:43,366 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:03:43,366 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) [2021-10-28 09:03:43,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-28 09:03:43,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:43,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:43,373 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:43,373 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:43,387 INFO L791 eck$LassoCheckResult]: Stem: 17#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 9#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 12#L99-1true [2021-10-28 09:03:43,391 INFO L793 eck$LassoCheckResult]: Loop: 12#L99-1true assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 8#L31true assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 15#L48true assume 0 != main_~p1~0;main_~lk1~0 := 1; 4#L48-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 28#L52-1true assume !(0 != main_~p3~0); 21#L56-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 6#L60-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 25#L64-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 24#L68-1true assume !(0 != main_~p1~0); 27#L74-1true assume !(0 != main_~p2~0); 13#L79-1true assume !(0 != main_~p3~0); 23#L84-1true assume !(0 != main_~p4~0); 14#L89-1true assume !(0 != main_~p5~0); 11#L94-1true assume !(0 != main_~p6~0); 12#L99-1true [2021-10-28 09:03:43,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:03:43,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:43,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571616390] [2021-10-28 09:03:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:43,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:43,564 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:43,645 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -11500681, now seen corresponding path program 1 times [2021-10-28 09:03:43,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:43,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114319211] [2021-10-28 09:03:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:43,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:43,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:43,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114319211] [2021-10-28 09:03:43,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114319211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:43,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:03:43,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672532332] [2021-10-28 09:03:43,788 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:43,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:03:43,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:03:43,820 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) [2021-10-28 09:03:43,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:43,891 INFO L93 Difference]: Finished difference Result 51 states and 82 transitions. [2021-10-28 09:03:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:03:43,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 82 transitions. [2021-10-28 09:03:43,900 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-28 09:03:43,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 41 states and 63 transitions. [2021-10-28 09:03:43,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-28 09:03:43,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-28 09:03:43,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 63 transitions. [2021-10-28 09:03:43,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:43,914 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 09:03:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 63 transitions. [2021-10-28 09:03:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-28 09:03:43,944 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) [2021-10-28 09:03:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 63 transitions. [2021-10-28 09:03:43,948 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 09:03:43,948 INFO L587 BuchiCegarLoop]: Abstraction has 41 states and 63 transitions. [2021-10-28 09:03:43,948 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:03:43,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 63 transitions. [2021-10-28 09:03:43,950 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 39 [2021-10-28 09:03:43,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:43,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:43,952 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:43,952 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:43,952 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 90#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 104#L99-1 [2021-10-28 09:03:43,952 INFO L793 eck$LassoCheckResult]: Loop: 104#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 119#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 118#L48 assume !(0 != main_~p1~0); 87#L48-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 88#L52-1 assume !(0 != main_~p3~0); 117#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 116#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 115#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 114#L68-1 assume !(0 != main_~p1~0); 111#L74-1 assume !(0 != main_~p2~0); 109#L79-1 assume !(0 != main_~p3~0); 92#L84-1 assume !(0 != main_~p4~0); 123#L89-1 assume !(0 != main_~p5~0); 121#L94-1 assume !(0 != main_~p6~0); 104#L99-1 [2021-10-28 09:03:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 09:03:43,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:43,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305691225] [2021-10-28 09:03:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:43,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:43,972 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:43,993 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 246664757, now seen corresponding path program 1 times [2021-10-28 09:03:43,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:43,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230020816] [2021-10-28 09:03:43,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:43,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:44,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:44,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230020816] [2021-10-28 09:03:44,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230020816] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:44,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:44,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:03:44,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193902170] [2021-10-28 09:03:44,030 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:44,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:03:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:03:44,032 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) [2021-10-28 09:03:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:44,052 INFO L93 Difference]: Finished difference Result 78 states and 118 transitions. [2021-10-28 09:03:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:03:44,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 118 transitions. [2021-10-28 09:03:44,057 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-28 09:03:44,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 78 states and 118 transitions. [2021-10-28 09:03:44,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2021-10-28 09:03:44,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-28 09:03:44,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 118 transitions. [2021-10-28 09:03:44,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:44,062 INFO L681 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 09:03:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 118 transitions. [2021-10-28 09:03:44,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 09:03:44,071 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) [2021-10-28 09:03:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 118 transitions. [2021-10-28 09:03:44,074 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 09:03:44,074 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 118 transitions. [2021-10-28 09:03:44,074 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:03:44,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 118 transitions. [2021-10-28 09:03:44,077 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 76 [2021-10-28 09:03:44,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:44,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:44,078 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:44,078 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:44,078 INFO L791 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 215#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 227#L99-1 [2021-10-28 09:03:44,078 INFO L793 eck$LassoCheckResult]: Loop: 227#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 263#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 259#L48 assume !(0 != main_~p1~0); 258#L48-2 assume !(0 != main_~p2~0); 257#L52-1 assume !(0 != main_~p3~0); 255#L56-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 253#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 251#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 249#L68-1 assume !(0 != main_~p1~0); 240#L74-1 assume !(0 != main_~p2~0); 238#L79-1 assume !(0 != main_~p3~0); 217#L84-1 assume !(0 != main_~p4~0); 276#L89-1 assume !(0 != main_~p5~0); 272#L94-1 assume !(0 != main_~p6~0); 227#L99-1 [2021-10-28 09:03:44,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 09:03:44,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474094416] [2021-10-28 09:03:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,109 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,148 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:44,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash 947729335, now seen corresponding path program 1 times [2021-10-28 09:03:44,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548693148] [2021-10-28 09:03:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:44,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:44,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548693148] [2021-10-28 09:03:44,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548693148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:44,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:44,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:03:44,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516804916] [2021-10-28 09:03:44,242 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:44,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:03:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:03:44,244 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) [2021-10-28 09:03:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:44,287 INFO L93 Difference]: Finished difference Result 150 states and 222 transitions. [2021-10-28 09:03:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:03:44,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 150 states and 222 transitions. [2021-10-28 09:03:44,293 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-28 09:03:44,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 150 states to 150 states and 222 transitions. [2021-10-28 09:03:44,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 150 [2021-10-28 09:03:44,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 150 [2021-10-28 09:03:44,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 222 transitions. [2021-10-28 09:03:44,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:44,299 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 09:03:44,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 222 transitions. [2021-10-28 09:03:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2021-10-28 09:03:44,316 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) [2021-10-28 09:03:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2021-10-28 09:03:44,320 INFO L704 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 09:03:44,320 INFO L587 BuchiCegarLoop]: Abstraction has 150 states and 222 transitions. [2021-10-28 09:03:44,321 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:03:44,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 222 transitions. [2021-10-28 09:03:44,324 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 148 [2021-10-28 09:03:44,325 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:44,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:44,326 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:44,326 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:44,326 INFO L791 eck$LassoCheckResult]: Stem: 448#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 449#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 461#L99-1 [2021-10-28 09:03:44,326 INFO L793 eck$LassoCheckResult]: Loop: 461#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 503#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 498#L48 assume !(0 != main_~p1~0); 492#L48-2 assume !(0 != main_~p2~0); 485#L52-1 assume !(0 != main_~p3~0); 486#L56-1 assume !(0 != main_~p4~0); 546#L60-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 545#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 539#L68-1 assume !(0 != main_~p1~0); 541#L74-1 assume !(0 != main_~p2~0); 538#L79-1 assume !(0 != main_~p3~0); 536#L84-1 assume !(0 != main_~p4~0); 535#L89-1 assume !(0 != main_~p5~0); 517#L94-1 assume !(0 != main_~p6~0); 461#L99-1 [2021-10-28 09:03:44,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 09:03:44,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279170951] [2021-10-28 09:03:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,342 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,358 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:44,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1627787705, now seen corresponding path program 1 times [2021-10-28 09:03:44,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691626981] [2021-10-28 09:03:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:44,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:44,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691626981] [2021-10-28 09:03:44,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691626981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:44,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:44,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:03:44,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149671556] [2021-10-28 09:03:44,390 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:44,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:44,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:03:44,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:03:44,392 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) [2021-10-28 09:03:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:44,413 INFO L93 Difference]: Finished difference Result 290 states and 418 transitions. [2021-10-28 09:03:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:03:44,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 418 transitions. [2021-10-28 09:03:44,420 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-28 09:03:44,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 290 states and 418 transitions. [2021-10-28 09:03:44,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 290 [2021-10-28 09:03:44,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 290 [2021-10-28 09:03:44,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 290 states and 418 transitions. [2021-10-28 09:03:44,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:44,434 INFO L681 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 09:03:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states and 418 transitions. [2021-10-28 09:03:44,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-10-28 09:03:44,472 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) [2021-10-28 09:03:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 418 transitions. [2021-10-28 09:03:44,482 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 09:03:44,482 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 418 transitions. [2021-10-28 09:03:44,482 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:03:44,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 418 transitions. [2021-10-28 09:03:44,485 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 288 [2021-10-28 09:03:44,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:44,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:44,487 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:44,487 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:44,487 INFO L791 eck$LassoCheckResult]: Stem: 894#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 895#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 907#L99-1 [2021-10-28 09:03:44,487 INFO L793 eck$LassoCheckResult]: Loop: 907#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 955#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 953#L48 assume !(0 != main_~p1~0); 949#L48-2 assume !(0 != main_~p2~0); 947#L52-1 assume !(0 != main_~p3~0); 943#L56-1 assume !(0 != main_~p4~0); 939#L60-1 assume !(0 != main_~p5~0); 937#L64-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 934#L68-1 assume !(0 != main_~p1~0); 935#L74-1 assume !(0 != main_~p2~0); 971#L79-1 assume !(0 != main_~p3~0); 966#L84-1 assume !(0 != main_~p4~0); 962#L89-1 assume !(0 != main_~p5~0); 959#L94-1 assume !(0 != main_~p6~0); 907#L99-1 [2021-10-28 09:03:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,488 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 09:03:44,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325429285] [2021-10-28 09:03:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,519 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash 818441079, now seen corresponding path program 1 times [2021-10-28 09:03:44,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618598858] [2021-10-28 09:03:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:03:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:03:44,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:03:44,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618598858] [2021-10-28 09:03:44,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618598858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:03:44,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:03:44,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:03:44,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104643610] [2021-10-28 09:03:44,583 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:03:44,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:03:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:03:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:03:44,585 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) [2021-10-28 09:03:44,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:03:44,619 INFO L93 Difference]: Finished difference Result 562 states and 786 transitions. [2021-10-28 09:03:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:03:44,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 562 states and 786 transitions. [2021-10-28 09:03:44,629 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-28 09:03:44,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 562 states to 562 states and 786 transitions. [2021-10-28 09:03:44,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 562 [2021-10-28 09:03:44,638 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 562 [2021-10-28 09:03:44,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 562 states and 786 transitions. [2021-10-28 09:03:44,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:03:44,642 INFO L681 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 09:03:44,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states and 786 transitions. [2021-10-28 09:03:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2021-10-28 09:03:44,675 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) [2021-10-28 09:03:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 786 transitions. [2021-10-28 09:03:44,686 INFO L704 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 09:03:44,686 INFO L587 BuchiCegarLoop]: Abstraction has 562 states and 786 transitions. [2021-10-28 09:03:44,686 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:03:44,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 562 states and 786 transitions. [2021-10-28 09:03:44,691 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 560 [2021-10-28 09:03:44,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:03:44,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:03:44,692 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:03:44,692 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:03:44,692 INFO L791 eck$LassoCheckResult]: Stem: 1752#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1753#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;havoc main_~cond~0; 1765#L99-1 [2021-10-28 09:03:44,692 INFO L793 eck$LassoCheckResult]: Loop: 1765#L99-1 assume !false;main_~cond~0 := main_#t~nondet13;havoc main_#t~nondet13; 1846#L31 assume !(0 == main_~cond~0);main_~lk1~0 := 0;main_~lk2~0 := 0;main_~lk3~0 := 0;main_~lk4~0 := 0;main_~lk5~0 := 0;main_~lk6~0 := 0; 1842#L48 assume !(0 != main_~p1~0); 1835#L48-2 assume !(0 != main_~p2~0); 1830#L52-1 assume !(0 != main_~p3~0); 1823#L56-1 assume !(0 != main_~p4~0); 1815#L60-1 assume !(0 != main_~p5~0); 1809#L64-1 assume !(0 != main_~p6~0); 1803#L68-1 assume !(0 != main_~p1~0); 1804#L74-1 assume !(0 != main_~p2~0); 1873#L79-1 assume !(0 != main_~p3~0); 1864#L84-1 assume !(0 != main_~p4~0); 1857#L89-1 assume !(0 != main_~p5~0); 1853#L94-1 assume !(0 != main_~p6~0); 1765#L99-1 [2021-10-28 09:03:44,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,693 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 09:03:44,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637350365] [2021-10-28 09:03:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,715 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:44,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1701518855, now seen corresponding path program 1 times [2021-10-28 09:03:44,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541423059] [2021-10-28 09:03:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,733 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,742 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:03:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1159342651, now seen corresponding path program 1 times [2021-10-28 09:03:44,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:03:44,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238812396] [2021-10-28 09:03:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:03:44,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:03:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,755 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:03:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:03:44,770 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:03:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:03:45 BoogieIcfgContainer [2021-10-28 09:03:45,316 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:03:45,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:03:45,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:03:45,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:03:45,319 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:03:43" (3/4) ... [2021-10-28 09:03:45,322 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:03:45,383 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:03:45,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:03:45,391 INFO L168 Benchmark]: Toolchain (without parser) took 3263.48 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 68.6 MB in the beginning and 55.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,392 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 68.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:45,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 461.74 ms. Allocated memory is still 111.1 MB. Free memory was 68.4 MB in the beginning and 86.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,393 INFO L168 Benchmark]: Boogie Preprocessor took 46.94 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,394 INFO L168 Benchmark]: RCFGBuilder took 481.25 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 72.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,394 INFO L168 Benchmark]: BuchiAutomizer took 2146.24 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 72.9 MB in the beginning and 57.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,395 INFO L168 Benchmark]: Witness Printer took 72.35 ms. Allocated memory is still 134.2 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:45,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 84.6 MB in the end (delta: 68.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 461.74 ms. Allocated memory is still 111.1 MB. Free memory was 68.4 MB in the beginning and 86.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.3 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.94 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 481.25 ms. Allocated memory is still 111.1 MB. Free memory was 83.5 MB in the beginning and 72.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2146.24 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 72.9 MB in the beginning and 57.5 MB in the end (delta: 15.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.35 ms. Allocated memory is still 134.2 MB. Free memory was 57.5 MB in the beginning and 55.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 2.0s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. 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 562 states and ocurred in iteration 5. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 256 SDtfs, 130 SDslu, 149 SDs, 0 SdLazy, 25 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 29]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=28471} State at position 1 is {NULL=28474, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=28471, p4=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16db736e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@669748b1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5dcfcce2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c1a7e42=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@619728ac=0, cond=9, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3d1936ef=0, NULL=28473, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e124572=9, NULL=0, NULL=0, NULL=0, NULL=28472, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0} - 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! [2021-10-28 09:03:45,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4da26e37-ab17-46bd-b0a1-39056d0cc270/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...