./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_8.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_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/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_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/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_4172f735-3bdf-4792-bc18-81ec08befdca/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 b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:23:35,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:23:35,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:23:35,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:23:35,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:23:35,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:23:35,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:23:35,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:23:35,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:23:35,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:23:35,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:23:35,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:23:35,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:23:35,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:23:35,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:23:35,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:23:35,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:23:35,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:23:35,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:23:35,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:23:35,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:23:35,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:23:35,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:23:35,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:23:35,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:23:35,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:23:35,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:23:35,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:23:35,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:23:35,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:23:35,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:23:35,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:23:35,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:23:35,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:23:35,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:23:35,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:23:35,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:23:35,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:23:35,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:23:35,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:23:35,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:23:35,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:23:35,662 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:23:35,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:23:35,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:23:35,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:23:35,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:23:35,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:23:35,665 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:23:35,665 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:23:35,670 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:23:35,670 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:23:35,671 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:23:35,672 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:23:35,672 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:23:35,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:23:35,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:23:35,673 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:23:35,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:23:35,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:23:35,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:23:35,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:23:35,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:23:35,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:23:35,674 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:23:35,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:23:35,675 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:23:35,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:23:35,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:23:35,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:23:35,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:23:35,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:23:35,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:23:35,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:23:35,681 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:23:35,681 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_4172f735-3bdf-4792-bc18-81ec08befdca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 [2021-10-28 09:23:35,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:23:36,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:23:36,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:23:36,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:23:36,024 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:23:36,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/locks/test_locks_8.c [2021-10-28 09:23:36,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/data/4834f9e69/f5e5b390df3d4a69938bccfc704b5fdc/FLAGded1d7aa2 [2021-10-28 09:23:36,611 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:23:36,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/sv-benchmarks/c/locks/test_locks_8.c [2021-10-28 09:23:36,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/data/4834f9e69/f5e5b390df3d4a69938bccfc704b5fdc/FLAGded1d7aa2 [2021-10-28 09:23:36,994 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/data/4834f9e69/f5e5b390df3d4a69938bccfc704b5fdc [2021-10-28 09:23:36,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:23:37,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:23:37,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:37,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:23:37,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:23:37,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:36" (1/1) ... [2021-10-28 09:23:37,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48db41ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37, skipping insertion in model container [2021-10-28 09:23:37,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:36" (1/1) ... [2021-10-28 09:23:37,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:23:37,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:23:37,289 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_4172f735-3bdf-4792-bc18-81ec08befdca/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-28 09:23:37,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:37,302 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:23:37,354 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_4172f735-3bdf-4792-bc18-81ec08befdca/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2021-10-28 09:23:37,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:37,372 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:23:37,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37 WrapperNode [2021-10-28 09:23:37,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:37,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:37,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:23:37,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:23:37,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:37,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:23:37,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:23:37,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:23:37,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:23:37,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:23:37,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:23:37,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:23:37,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (1/1) ... [2021-10-28 09:23:37,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:23:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:37,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:37,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:23:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:23:37,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:23:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:23:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:23:37,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:23:37,905 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:23:37,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:37 BoogieIcfgContainer [2021-10-28 09:23:37,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:23:37,926 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:23:37,927 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:23:37,930 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:23:37,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:37,947 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:23:36" (1/3) ... [2021-10-28 09:23:37,948 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c01817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:23:37, skipping insertion in model container [2021-10-28 09:23:37,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:37,949 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:37" (2/3) ... [2021-10-28 09:23:37,949 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9c01817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:23:37, skipping insertion in model container [2021-10-28 09:23:37,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:23:37,949 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:37" (3/3) ... [2021-10-28 09:23:37,951 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_8.c [2021-10-28 09:23:38,020 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:23:38,020 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:23:38,020 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:23:38,021 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:23:38,021 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:23:38,021 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:23:38,021 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:23:38,021 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:23:38,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 09:23:38,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-28 09:23:38,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,072 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,073 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,073 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:23:38,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 09:23:38,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-28 09:23:38,080 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,080 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,081 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,081 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,089 INFO L791 eck$LassoCheckResult]: Stem: 19#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); 8#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_#t~nondet14, main_#t~nondet15, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 22#L127-1true [2021-10-28 09:23:38,092 INFO L793 eck$LassoCheckResult]: Loop: 22#L127-1true assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 29#L37true 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 7#L58true assume 0 != main_~p1~0;main_~lk1~0 := 1; 14#L58-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 16#L62-1true assume !(0 != main_~p3~0); 30#L66-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 31#L70-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 33#L74-1true assume 0 != main_~p6~0;main_~lk6~0 := 1; 27#L78-1true assume 0 != main_~p7~0;main_~lk7~0 := 1; 11#L82-1true assume 0 != main_~p8~0;main_~lk8~0 := 1; 9#L86-1true assume !(0 != main_~p1~0); 6#L92-1true assume !(0 != main_~p2~0); 17#L97-1true assume !(0 != main_~p3~0); 24#L102-1true assume !(0 != main_~p4~0); 21#L107-1true assume !(0 != main_~p5~0); 34#L112-1true assume !(0 != main_~p6~0); 32#L117-1true assume !(0 != main_~p7~0); 12#L122-1true assume !(0 != main_~p8~0); 22#L127-1true [2021-10-28 09:23:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:23:38,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790129807] [2021-10-28 09:23:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,246 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,310 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1098697512, now seen corresponding path program 1 times [2021-10-28 09:23:38,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601500828] [2021-10-28 09:23:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,318 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:38,431 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 09:23:38,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:38,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601500828] [2021-10-28 09:23:38,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601500828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:38,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:38,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:38,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713148668] [2021-10-28 09:23:38,442 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:38,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:38,459 INFO L87 Difference]: Start difference. First operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 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 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:38,489 INFO L93 Difference]: Finished difference Result 63 states and 106 transitions. [2021-10-28 09:23:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:38,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 106 transitions. [2021-10-28 09:23:38,495 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 09:23:38,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 53 states and 83 transitions. [2021-10-28 09:23:38,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-28 09:23:38,502 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-28 09:23:38,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 83 transitions. [2021-10-28 09:23:38,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:38,504 INFO L681 BuchiCegarLoop]: Abstraction has 53 states and 83 transitions. [2021-10-28 09:23:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 83 transitions. [2021-10-28 09:23:38,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-10-28 09:23:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 52 states have internal predecessors, (83), 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 09:23:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 83 transitions. [2021-10-28 09:23:38,538 INFO L704 BuchiCegarLoop]: Abstraction has 53 states and 83 transitions. [2021-10-28 09:23:38,538 INFO L587 BuchiCegarLoop]: Abstraction has 53 states and 83 transitions. [2021-10-28 09:23:38,538 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:23:38,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 53 states and 83 transitions. [2021-10-28 09:23:38,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-28 09:23:38,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,542 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,542 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,542 INFO L791 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 112#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 113#L127-1 [2021-10-28 09:23:38,542 INFO L793 eck$LassoCheckResult]: Loop: 113#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 140#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 138#L58 assume !(0 != main_~p1~0); 139#L58-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 157#L62-1 assume !(0 != main_~p3~0); 156#L66-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 155#L70-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 154#L74-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 153#L78-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 152#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 151#L86-1 assume !(0 != main_~p1~0); 109#L92-1 assume !(0 != main_~p2~0); 108#L97-1 assume !(0 != main_~p3~0); 123#L102-1 assume !(0 != main_~p4~0); 129#L107-1 assume !(0 != main_~p5~0); 143#L112-1 assume !(0 != main_~p6~0); 137#L117-1 assume !(0 != main_~p7~0); 131#L122-1 assume !(0 != main_~p8~0); 113#L127-1 [2021-10-28 09:23:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 09:23:38,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771562769] [2021-10-28 09:23:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,556 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,571 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash 77629158, now seen corresponding path program 1 times [2021-10-28 09:23:38,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769797188] [2021-10-28 09:23:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:38,620 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 09:23:38,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:38,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769797188] [2021-10-28 09:23:38,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769797188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:38,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:38,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:38,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128039603] [2021-10-28 09:23:38,622 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:38,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:38,624 INFO L87 Difference]: Start difference. First operand 53 states and 83 transitions. cyclomatic complexity: 32 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:38,649 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2021-10-28 09:23:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:38,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 158 transitions. [2021-10-28 09:23:38,654 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 100 [2021-10-28 09:23:38,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 102 states and 158 transitions. [2021-10-28 09:23:38,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 102 [2021-10-28 09:23:38,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2021-10-28 09:23:38,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 158 transitions. [2021-10-28 09:23:38,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:38,659 INFO L681 BuchiCegarLoop]: Abstraction has 102 states and 158 transitions. [2021-10-28 09:23:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states and 158 transitions. [2021-10-28 09:23:38,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-10-28 09:23:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 102 states have (on average 1.5490196078431373) internal successors, (158), 101 states have internal predecessors, (158), 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 09:23:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 158 transitions. [2021-10-28 09:23:38,670 INFO L704 BuchiCegarLoop]: Abstraction has 102 states and 158 transitions. [2021-10-28 09:23:38,670 INFO L587 BuchiCegarLoop]: Abstraction has 102 states and 158 transitions. [2021-10-28 09:23:38,670 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:23:38,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 158 transitions. [2021-10-28 09:23:38,673 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 100 [2021-10-28 09:23:38,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,674 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,674 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,674 INFO L791 eck$LassoCheckResult]: Stem: 289#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); 273#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_#t~nondet14, main_#t~nondet15, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 274#L127-1 [2021-10-28 09:23:38,674 INFO L793 eck$LassoCheckResult]: Loop: 274#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 325#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 323#L58 assume !(0 != main_~p1~0); 320#L58-2 assume !(0 != main_~p2~0); 318#L62-1 assume !(0 != main_~p3~0); 316#L66-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 314#L70-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 312#L74-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 310#L78-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 308#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 306#L86-1 assume !(0 != main_~p1~0); 307#L92-1 assume !(0 != main_~p2~0); 348#L97-1 assume !(0 != main_~p3~0); 345#L102-1 assume !(0 != main_~p4~0); 341#L107-1 assume !(0 != main_~p5~0); 336#L112-1 assume !(0 != main_~p6~0); 333#L117-1 assume !(0 != main_~p7~0); 329#L122-1 assume !(0 != main_~p8~0); 274#L127-1 [2021-10-28 09:23:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,675 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 09:23:38,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193203581] [2021-10-28 09:23:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,689 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:38,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1202234520, now seen corresponding path program 1 times [2021-10-28 09:23:38,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048437616] [2021-10-28 09:23:38,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:38,745 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 09:23:38,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:38,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048437616] [2021-10-28 09:23:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048437616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:38,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:38,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:38,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129751385] [2021-10-28 09:23:38,748 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:38,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:38,749 INFO L87 Difference]: Start difference. First operand 102 states and 158 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:38,775 INFO L93 Difference]: Finished difference Result 198 states and 302 transitions. [2021-10-28 09:23:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:38,776 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 302 transitions. [2021-10-28 09:23:38,781 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 196 [2021-10-28 09:23:38,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 198 states and 302 transitions. [2021-10-28 09:23:38,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 198 [2021-10-28 09:23:38,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-10-28 09:23:38,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 302 transitions. [2021-10-28 09:23:38,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:38,787 INFO L681 BuchiCegarLoop]: Abstraction has 198 states and 302 transitions. [2021-10-28 09:23:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states and 302 transitions. [2021-10-28 09:23:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-28 09:23:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 198 states have (on average 1.5252525252525253) internal successors, (302), 197 states have internal predecessors, (302), 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 09:23:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 302 transitions. [2021-10-28 09:23:38,827 INFO L704 BuchiCegarLoop]: Abstraction has 198 states and 302 transitions. [2021-10-28 09:23:38,827 INFO L587 BuchiCegarLoop]: Abstraction has 198 states and 302 transitions. [2021-10-28 09:23:38,827 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:23:38,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 198 states and 302 transitions. [2021-10-28 09:23:38,835 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 196 [2021-10-28 09:23:38,835 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,836 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,836 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,836 INFO L791 eck$LassoCheckResult]: Stem: 597#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 580#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 581#L127-1 [2021-10-28 09:23:38,837 INFO L793 eck$LassoCheckResult]: Loop: 581#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 645#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 638#L58 assume !(0 != main_~p1~0); 639#L58-2 assume !(0 != main_~p2~0); 630#L62-1 assume !(0 != main_~p3~0); 631#L66-1 assume !(0 != main_~p4~0); 701#L70-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 700#L74-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 699#L78-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 698#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 697#L86-1 assume !(0 != main_~p1~0); 694#L92-1 assume !(0 != main_~p2~0); 690#L97-1 assume !(0 != main_~p3~0); 688#L102-1 assume !(0 != main_~p4~0); 676#L107-1 assume !(0 != main_~p5~0); 675#L112-1 assume !(0 != main_~p6~0); 655#L117-1 assume !(0 != main_~p7~0); 654#L122-1 assume !(0 != main_~p8~0); 581#L127-1 [2021-10-28 09:23:38,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 09:23:38,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003815755] [2021-10-28 09:23:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,850 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:38,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1789040534, now seen corresponding path program 1 times [2021-10-28 09:23:38,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662211039] [2021-10-28 09:23:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:38,892 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 09:23:38,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:38,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662211039] [2021-10-28 09:23:38,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662211039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:38,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:38,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:38,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521907037] [2021-10-28 09:23:38,894 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:38,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:38,897 INFO L87 Difference]: Start difference. First operand 198 states and 302 transitions. cyclomatic complexity: 112 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:38,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:38,928 INFO L93 Difference]: Finished difference Result 386 states and 578 transitions. [2021-10-28 09:23:38,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:38,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 386 states and 578 transitions. [2021-10-28 09:23:38,933 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 384 [2021-10-28 09:23:38,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 386 states to 386 states and 578 transitions. [2021-10-28 09:23:38,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 386 [2021-10-28 09:23:38,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 386 [2021-10-28 09:23:38,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 386 states and 578 transitions. [2021-10-28 09:23:38,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:38,955 INFO L681 BuchiCegarLoop]: Abstraction has 386 states and 578 transitions. [2021-10-28 09:23:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states and 578 transitions. [2021-10-28 09:23:38,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-10-28 09:23:38,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 386 states have (on average 1.4974093264248705) internal successors, (578), 385 states have internal predecessors, (578), 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 09:23:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 578 transitions. [2021-10-28 09:23:38,982 INFO L704 BuchiCegarLoop]: Abstraction has 386 states and 578 transitions. [2021-10-28 09:23:38,982 INFO L587 BuchiCegarLoop]: Abstraction has 386 states and 578 transitions. [2021-10-28 09:23:38,982 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:23:38,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 386 states and 578 transitions. [2021-10-28 09:23:38,986 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 384 [2021-10-28 09:23:38,986 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:38,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:38,987 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:38,987 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:38,987 INFO L791 eck$LassoCheckResult]: Stem: 1186#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); 1169#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_#t~nondet14, main_#t~nondet15, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 1170#L127-1 [2021-10-28 09:23:38,988 INFO L793 eck$LassoCheckResult]: Loop: 1170#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 1273#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 1266#L58 assume !(0 != main_~p1~0); 1268#L58-2 assume !(0 != main_~p2~0); 1246#L62-1 assume !(0 != main_~p3~0); 1247#L66-1 assume !(0 != main_~p4~0); 1335#L70-1 assume !(0 != main_~p5~0); 1330#L74-1 assume 0 != main_~p6~0;main_~lk6~0 := 1; 1331#L78-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 1322#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 1323#L86-1 assume !(0 != main_~p1~0); 1359#L92-1 assume !(0 != main_~p2~0); 1357#L97-1 assume !(0 != main_~p3~0); 1355#L102-1 assume !(0 != main_~p4~0); 1354#L107-1 assume !(0 != main_~p5~0); 1352#L112-1 assume !(0 != main_~p6~0); 1351#L117-1 assume !(0 != main_~p7~0); 1287#L122-1 assume !(0 != main_~p8~0); 1170#L127-1 [2021-10-28 09:23:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 09:23:38,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:38,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399573280] [2021-10-28 09:23:38,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:38,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1530875096, now seen corresponding path program 1 times [2021-10-28 09:23:39,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138528093] [2021-10-28 09:23:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:39,081 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 09:23:39,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:39,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138528093] [2021-10-28 09:23:39,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138528093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:39,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:39,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:39,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906664337] [2021-10-28 09:23:39,084 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:39,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:39,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:39,085 INFO L87 Difference]: Start difference. First operand 386 states and 578 transitions. cyclomatic complexity: 208 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:39,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:39,101 INFO L93 Difference]: Finished difference Result 754 states and 1106 transitions. [2021-10-28 09:23:39,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:39,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 754 states and 1106 transitions. [2021-10-28 09:23:39,112 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 752 [2021-10-28 09:23:39,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 754 states to 754 states and 1106 transitions. [2021-10-28 09:23:39,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 754 [2021-10-28 09:23:39,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 754 [2021-10-28 09:23:39,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 754 states and 1106 transitions. [2021-10-28 09:23:39,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:39,124 INFO L681 BuchiCegarLoop]: Abstraction has 754 states and 1106 transitions. [2021-10-28 09:23:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states and 1106 transitions. [2021-10-28 09:23:39,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-10-28 09:23:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 754 states have (on average 1.46684350132626) internal successors, (1106), 753 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:39,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1106 transitions. [2021-10-28 09:23:39,147 INFO L704 BuchiCegarLoop]: Abstraction has 754 states and 1106 transitions. [2021-10-28 09:23:39,148 INFO L587 BuchiCegarLoop]: Abstraction has 754 states and 1106 transitions. [2021-10-28 09:23:39,148 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:23:39,148 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 754 states and 1106 transitions. [2021-10-28 09:23:39,154 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 752 [2021-10-28 09:23:39,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:39,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:39,155 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:39,155 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:39,155 INFO L791 eck$LassoCheckResult]: Stem: 2329#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2315#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 2316#L127-1 [2021-10-28 09:23:39,156 INFO L793 eck$LassoCheckResult]: Loop: 2316#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 2415#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 2411#L58 assume !(0 != main_~p1~0); 2408#L58-2 assume !(0 != main_~p2~0); 2406#L62-1 assume !(0 != main_~p3~0); 2403#L66-1 assume !(0 != main_~p4~0); 2399#L70-1 assume !(0 != main_~p5~0); 2396#L74-1 assume !(0 != main_~p6~0); 2394#L78-1 assume 0 != main_~p7~0;main_~lk7~0 := 1; 2391#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 2387#L86-1 assume !(0 != main_~p1~0); 2385#L92-1 assume !(0 != main_~p2~0); 2381#L97-1 assume !(0 != main_~p3~0); 2378#L102-1 assume !(0 != main_~p4~0); 2379#L107-1 assume !(0 != main_~p5~0); 2426#L112-1 assume !(0 != main_~p6~0); 2423#L117-1 assume !(0 != main_~p7~0); 2420#L122-1 assume !(0 != main_~p8~0); 2316#L127-1 [2021-10-28 09:23:39,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,156 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-10-28 09:23:39,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407877887] [2021-10-28 09:23:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,165 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,176 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,176 INFO L85 PathProgramCache]: Analyzing trace with hash -829810518, now seen corresponding path program 1 times [2021-10-28 09:23:39,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326788052] [2021-10-28 09:23:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:39,198 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 09:23:39,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:39,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326788052] [2021-10-28 09:23:39,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326788052] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:39,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:39,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:39,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825558399] [2021-10-28 09:23:39,200 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:39,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:39,201 INFO L87 Difference]: Start difference. First operand 754 states and 1106 transitions. cyclomatic complexity: 384 Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:39,222 INFO L93 Difference]: Finished difference Result 1474 states and 2114 transitions. [2021-10-28 09:23:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:39,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1474 states and 2114 transitions. [2021-10-28 09:23:39,241 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1472 [2021-10-28 09:23:39,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1474 states to 1474 states and 2114 transitions. [2021-10-28 09:23:39,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1474 [2021-10-28 09:23:39,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1474 [2021-10-28 09:23:39,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1474 states and 2114 transitions. [2021-10-28 09:23:39,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:39,260 INFO L681 BuchiCegarLoop]: Abstraction has 1474 states and 2114 transitions. [2021-10-28 09:23:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states and 2114 transitions. [2021-10-28 09:23:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2021-10-28 09:23:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1474 states have (on average 1.4341926729986432) internal successors, (2114), 1473 states have internal predecessors, (2114), 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 09:23:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2114 transitions. [2021-10-28 09:23:39,303 INFO L704 BuchiCegarLoop]: Abstraction has 1474 states and 2114 transitions. [2021-10-28 09:23:39,303 INFO L587 BuchiCegarLoop]: Abstraction has 1474 states and 2114 transitions. [2021-10-28 09:23:39,303 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:23:39,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1474 states and 2114 transitions. [2021-10-28 09:23:39,315 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1472 [2021-10-28 09:23:39,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:39,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:39,316 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:39,316 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:39,317 INFO L791 eck$LassoCheckResult]: Stem: 4564#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); 4550#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_#t~nondet14, main_#t~nondet15, 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_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, 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;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 4551#L127-1 [2021-10-28 09:23:39,317 INFO L793 eck$LassoCheckResult]: Loop: 4551#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 4806#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 4807#L58 assume !(0 != main_~p1~0); 4818#L58-2 assume !(0 != main_~p2~0); 4816#L62-1 assume !(0 != main_~p3~0); 4812#L66-1 assume !(0 != main_~p4~0); 4809#L70-1 assume !(0 != main_~p5~0); 4770#L74-1 assume !(0 != main_~p6~0); 4767#L78-1 assume !(0 != main_~p7~0); 4765#L82-1 assume 0 != main_~p8~0;main_~lk8~0 := 1; 4730#L86-1 assume !(0 != main_~p1~0); 4724#L92-1 assume !(0 != main_~p2~0); 4725#L97-1 assume !(0 != main_~p3~0); 4711#L102-1 assume !(0 != main_~p4~0); 4713#L107-1 assume !(0 != main_~p5~0); 4831#L112-1 assume !(0 != main_~p6~0); 4827#L117-1 assume !(0 != main_~p7~0); 4824#L122-1 assume !(0 != main_~p8~0); 4551#L127-1 [2021-10-28 09:23:39,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,318 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-10-28 09:23:39,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147850713] [2021-10-28 09:23:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,327 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,337 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1222837528, now seen corresponding path program 1 times [2021-10-28 09:23:39,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338272818] [2021-10-28 09:23:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:39,365 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 09:23:39,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:39,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338272818] [2021-10-28 09:23:39,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338272818] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:39,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:39,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:23:39,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659102831] [2021-10-28 09:23:39,368 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:23:39,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:23:39,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:23:39,369 INFO L87 Difference]: Start difference. First operand 1474 states and 2114 transitions. cyclomatic complexity: 704 Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 09:23:39,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:39,405 INFO L93 Difference]: Finished difference Result 2882 states and 4034 transitions. [2021-10-28 09:23:39,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:23:39,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2882 states and 4034 transitions. [2021-10-28 09:23:39,441 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 2880 [2021-10-28 09:23:39,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2882 states to 2882 states and 4034 transitions. [2021-10-28 09:23:39,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2882 [2021-10-28 09:23:39,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2882 [2021-10-28 09:23:39,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2882 states and 4034 transitions. [2021-10-28 09:23:39,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:23:39,478 INFO L681 BuchiCegarLoop]: Abstraction has 2882 states and 4034 transitions. [2021-10-28 09:23:39,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states and 4034 transitions. [2021-10-28 09:23:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2021-10-28 09:23:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2882 states have (on average 1.3997224149895906) internal successors, (4034), 2881 states have internal predecessors, (4034), 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 09:23:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4034 transitions. [2021-10-28 09:23:39,594 INFO L704 BuchiCegarLoop]: Abstraction has 2882 states and 4034 transitions. [2021-10-28 09:23:39,594 INFO L587 BuchiCegarLoop]: Abstraction has 2882 states and 4034 transitions. [2021-10-28 09:23:39,594 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:23:39,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2882 states and 4034 transitions. [2021-10-28 09:23:39,615 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 2880 [2021-10-28 09:23:39,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:23:39,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:23:39,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:23:39,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:39,616 INFO L791 eck$LassoCheckResult]: Stem: 8925#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 8910#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~p6~0, main_~lk6~0, main_~p7~0, main_~lk7~0, main_~p8~0, main_~lk8~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;main_~p6~0 := main_#t~nondet12;havoc main_#t~nondet12;havoc main_~lk6~0;main_~p7~0 := main_#t~nondet13;havoc main_#t~nondet13;havoc main_~lk7~0;main_~p8~0 := main_#t~nondet14;havoc main_#t~nondet14;havoc main_~lk8~0;havoc main_~cond~0; 8911#L127-1 [2021-10-28 09:23:39,616 INFO L793 eck$LassoCheckResult]: Loop: 8911#L127-1 assume !false;main_~cond~0 := main_#t~nondet15;havoc main_#t~nondet15; 9035#L37 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;main_~lk7~0 := 0;main_~lk8~0 := 0; 9033#L58 assume !(0 != main_~p1~0); 9027#L58-2 assume !(0 != main_~p2~0); 9029#L62-1 assume !(0 != main_~p3~0); 9017#L66-1 assume !(0 != main_~p4~0); 9019#L70-1 assume !(0 != main_~p5~0); 9005#L74-1 assume !(0 != main_~p6~0); 9007#L78-1 assume !(0 != main_~p7~0); 8993#L82-1 assume !(0 != main_~p8~0); 8995#L86-1 assume !(0 != main_~p1~0); 9058#L92-1 assume !(0 != main_~p2~0); 9056#L97-1 assume !(0 != main_~p3~0); 9053#L102-1 assume !(0 != main_~p4~0); 9051#L107-1 assume !(0 != main_~p5~0); 9047#L112-1 assume !(0 != main_~p6~0); 9043#L117-1 assume !(0 != main_~p7~0); 9039#L122-1 assume !(0 != main_~p8~0); 8911#L127-1 [2021-10-28 09:23:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-10-28 09:23:39,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700424641] [2021-10-28 09:23:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,636 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,665 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash -542779158, now seen corresponding path program 1 times [2021-10-28 09:23:39,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850286955] [2021-10-28 09:23:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,678 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,694 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1175900116, now seen corresponding path program 1 times [2021-10-28 09:23:39,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:39,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881523607] [2021-10-28 09:23:39,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:39,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:23:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:23:39,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:23:40,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:23:40 BoogieIcfgContainer [2021-10-28 09:23:40,385 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:23:40,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:23:40,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:23:40,386 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:23:40,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:37" (3/4) ... [2021-10-28 09:23:40,388 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:23:40,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:23:40,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:23:40,432 INFO L168 Benchmark]: Toolchain (without parser) took 3431.54 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 57.5 MB in the beginning and 53.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,433 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:23:40,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.45 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 57.2 MB in the beginning and 107.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.66 ms. Allocated memory is still 132.1 MB. Free memory was 107.6 MB in the beginning and 105.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,434 INFO L168 Benchmark]: Boogie Preprocessor took 37.07 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 104.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,435 INFO L168 Benchmark]: RCFGBuilder took 445.58 ms. Allocated memory is still 132.1 MB. Free memory was 104.7 MB in the beginning and 93.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,435 INFO L168 Benchmark]: BuchiAutomizer took 2458.56 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 55.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,436 INFO L168 Benchmark]: Witness Printer took 45.52 ms. Allocated memory is still 132.1 MB. Free memory was 55.7 MB in the beginning and 53.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:23:40,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 92.3 MB. Free memory was 64.5 MB in the beginning and 64.4 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.45 ms. Allocated memory was 92.3 MB in the beginning and 132.1 MB in the end (delta: 39.8 MB). Free memory was 57.2 MB in the beginning and 107.6 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.66 ms. Allocated memory is still 132.1 MB. Free memory was 107.6 MB in the beginning and 105.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.07 ms. Allocated memory is still 132.1 MB. Free memory was 105.9 MB in the beginning and 104.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 445.58 ms. Allocated memory is still 132.1 MB. Free memory was 104.7 MB in the beginning and 93.4 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2458.56 ms. Allocated memory is still 132.1 MB. Free memory was 93.4 MB in the beginning and 55.7 MB in the end (delta: 37.7 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * Witness Printer took 45.52 ms. Allocated memory is still 132.1 MB. Free memory was 55.7 MB in the beginning and 53.6 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 7 terminating modules (7 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.7 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 2882 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 8 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 7. Minimization of nondet autom 0. Automata minimization 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 2882 states and ocurred in iteration 7. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 459 SDtfs, 236 SDslu, 277 SDs, 0 SdLazy, 35 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI7 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: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=8573} State at position 1 is {NULL=8574, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=8573, p4=0, p7=0, p6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6faa007e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62008a76=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6aa6c803=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12bb1a05=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d2d51dc=0, cond=10, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b982d35=0, NULL=8576, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17221295=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d034946=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1a67508b=10, NULL=0, NULL=0, NULL=0, NULL=8575, lk3=0, lk4=0, lk5=0, lk6=0, NULL=0, lk1=0, lk2=0, lk7=0, lk8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L33] int cond; Loop: [L35] COND TRUE 1 [L36] cond = __VERIFIER_nondet_int() [L37] COND FALSE !(cond == 0) [L40] lk1 = 0 [L42] lk2 = 0 [L44] lk3 = 0 [L46] lk4 = 0 [L48] lk5 = 0 [L50] lk6 = 0 [L52] lk7 = 0 [L54] lk8 = 0 [L58] COND FALSE !(p1 != 0) [L62] COND FALSE !(p2 != 0) [L66] COND FALSE !(p3 != 0) [L70] COND FALSE !(p4 != 0) [L74] COND FALSE !(p5 != 0) [L78] COND FALSE !(p6 != 0) [L82] COND FALSE !(p7 != 0) [L86] COND FALSE !(p8 != 0) [L92] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L102] COND FALSE !(p3 != 0) [L107] COND FALSE !(p4 != 0) [L112] COND FALSE !(p5 != 0) [L117] COND FALSE !(p6 != 0) [L122] COND FALSE !(p7 != 0) [L127] COND FALSE !(p8 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:23:40,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4172f735-3bdf-4792-bc18-81ec08befdca/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...