./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_5.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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/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 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 09:43:08,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:43:08,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:43:08,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:43:08,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:43:08,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:43:08,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:43:08,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:43:08,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:43:08,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:43:08,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:43:08,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:43:08,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:43:08,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:43:08,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:43:08,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:43:08,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:43:08,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:43:08,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:43:08,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:43:08,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:43:08,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:43:08,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:43:08,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:43:08,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:43:08,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:43:08,992 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:43:08,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:43:08,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:43:08,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:43:08,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:43:09,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:43:09,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:43:09,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:43:09,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:43:09,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:43:09,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:43:09,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:43:09,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:43:09,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:43:09,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:43:09,011 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:43:09,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:43:09,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:43:09,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:43:09,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:43:09,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:43:09,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:43:09,051 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:43:09,052 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:43:09,052 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:43:09,052 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:43:09,052 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:43:09,053 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:43:09,053 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:43:09,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:43:09,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:43:09,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:43:09,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:43:09,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:43:09,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:43:09,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:43:09,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:43:09,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:43:09,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:43:09,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:43:09,056 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:43:09,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:43:09,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:43:09,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:43:09,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:43:09,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:43:09,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:43:09,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:43:09,058 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:43:09,059 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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f68d39859f114df07f2619f37e3285dcdf00194e62a42552d2c67e537c13685 [2021-10-28 09:43:09,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:43:09,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:43:09,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:43:09,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:43:09,365 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:43:09,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/locks/test_locks_5.c [2021-10-28 09:43:09,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/data/d51450274/944778826aae46aea2d2bbbc9a74e0e7/FLAGdeee57331 [2021-10-28 09:43:09,913 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:43:09,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/sv-benchmarks/c/locks/test_locks_5.c [2021-10-28 09:43:09,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/data/d51450274/944778826aae46aea2d2bbbc9a74e0e7/FLAGdeee57331 [2021-10-28 09:43:10,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/data/d51450274/944778826aae46aea2d2bbbc9a74e0e7 [2021-10-28 09:43:10,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:43:10,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:43:10,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:10,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:43:10,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:43:10,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e49585c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10, skipping insertion in model container [2021-10-28 09:43:10,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:43:10,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:43:10,513 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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-28 09:43:10,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:10,527 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:43:10,548 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_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/sv-benchmarks/c/locks/test_locks_5.c[2207,2220] [2021-10-28 09:43:10,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:43:10,566 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:43:10,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10 WrapperNode [2021-10-28 09:43:10,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:43:10,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:10,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:43:10,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:43:10,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:43:10,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:43:10,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:43:10,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:43:10,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:43:10,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:43:10,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:43:10,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:43:10,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (1/1) ... [2021-10-28 09:43:10,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:43:10,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:43:10,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:43:10,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:43:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:43:10,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:43:10,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:43:10,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:43:11,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:43:11,080 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:43:11,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:11 BoogieIcfgContainer [2021-10-28 09:43:11,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:43:11,100 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:43:11,116 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:43:11,120 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:43:11,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:43:11,121 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:43:10" (1/3) ... [2021-10-28 09:43:11,123 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@491fc529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:43:11, skipping insertion in model container [2021-10-28 09:43:11,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:43:11,123 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:43:10" (2/3) ... [2021-10-28 09:43:11,124 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@491fc529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:43:11, skipping insertion in model container [2021-10-28 09:43:11,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:43:11,124 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:11" (3/3) ... [2021-10-28 09:43:11,126 INFO L389 chiAutomizerObserver]: Analyzing ICFG test_locks_5.c [2021-10-28 09:43:11,212 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:43:11,212 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:43:11,213 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:43:11,214 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:43:11,214 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:43:11,214 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:43:11,214 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:43:11,214 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:43:11,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 09:43:11,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-28 09:43:11,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:11,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:11,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:11,267 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:11,267 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:43:11,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 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 09:43:11,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-10-28 09:43:11,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:11,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:11,274 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:11,274 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:11,283 INFO L791 eck$LassoCheckResult]: Stem: 6#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); 14#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_~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_~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;havoc main_~cond~0; 8#L85-1true [2021-10-28 09:43:11,291 INFO L793 eck$LassoCheckResult]: Loop: 8#L85-1true assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 23#L28true 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; 9#L43true assume 0 != main_~p1~0;main_~lk1~0 := 1; 10#L43-2true assume 0 != main_~p2~0;main_~lk2~0 := 1; 19#L47-1true assume !(0 != main_~p3~0); 17#L51-1true assume 0 != main_~p4~0;main_~lk4~0 := 1; 18#L55-1true assume 0 != main_~p5~0;main_~lk5~0 := 1; 21#L59-1true assume !(0 != main_~p1~0); 11#L65-1true assume !(0 != main_~p2~0); 20#L70-1true assume !(0 != main_~p3~0); 22#L75-1true assume !(0 != main_~p4~0); 24#L80-1true assume !(0 != main_~p5~0); 8#L85-1true [2021-10-28 09:43:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-28 09:43:11,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124567399] [2021-10-28 09:43:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,456 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,526 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:11,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2089480461, now seen corresponding path program 1 times [2021-10-28 09:43:11,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495720569] [2021-10-28 09:43:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,642 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 09:43:11,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:11,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495720569] [2021-10-28 09:43:11,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495720569] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:11,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:11,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:43:11,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77195575] [2021-10-28 09:43:11,649 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:11,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:11,677 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 09:43:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:11,737 INFO L93 Difference]: Finished difference Result 45 states and 70 transitions. [2021-10-28 09:43:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:11,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 70 transitions. [2021-10-28 09:43:11,743 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-10-28 09:43:11,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 35 states and 53 transitions. [2021-10-28 09:43:11,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-10-28 09:43:11,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-10-28 09:43:11,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 53 transitions. [2021-10-28 09:43:11,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:43:11,754 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-28 09:43:11,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 53 transitions. [2021-10-28 09:43:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 09:43:11,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 34 states have internal predecessors, (53), 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 09:43:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 53 transitions. [2021-10-28 09:43:11,785 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-28 09:43:11,785 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 53 transitions. [2021-10-28 09:43:11,785 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:43:11,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 53 transitions. [2021-10-28 09:43:11,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2021-10-28 09:43:11,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:11,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:11,788 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:11,788 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:11,788 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 81#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 79#L85-1 [2021-10-28 09:43:11,789 INFO L793 eck$LassoCheckResult]: Loop: 79#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 84#L28 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; 100#L43 assume !(0 != main_~p1~0); 87#L43-2 assume 0 != main_~p2~0;main_~lk2~0 := 1; 88#L47-1 assume !(0 != main_~p3~0); 93#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 94#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 95#L59-1 assume !(0 != main_~p1~0); 101#L65-1 assume !(0 != main_~p2~0); 111#L70-1 assume !(0 != main_~p3~0); 98#L75-1 assume !(0 != main_~p4~0); 92#L80-1 assume !(0 != main_~p5~0); 79#L85-1 [2021-10-28 09:43:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-10-28 09:43:11,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316627535] [2021-10-28 09:43:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,817 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:11,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1812459825, now seen corresponding path program 1 times [2021-10-28 09:43:11,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425003572] [2021-10-28 09:43:11,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,842 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 09:43:11,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:11,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425003572] [2021-10-28 09:43:11,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425003572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:11,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:11,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:43:11,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921501870] [2021-10-28 09:43:11,844 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:11,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:11,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:11,846 INFO L87 Difference]: Start difference. First operand 35 states and 53 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 09:43:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:11,863 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-10-28 09:43:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:11,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 98 transitions. [2021-10-28 09:43:11,867 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-10-28 09:43:11,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 66 states and 98 transitions. [2021-10-28 09:43:11,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2021-10-28 09:43:11,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2021-10-28 09:43:11,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 98 transitions. [2021-10-28 09:43:11,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:43:11,871 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-28 09:43:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 98 transitions. [2021-10-28 09:43:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-10-28 09:43:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 65 states have internal predecessors, (98), 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 09:43:11,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2021-10-28 09:43:11,879 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-28 09:43:11,879 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 98 transitions. [2021-10-28 09:43:11,879 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:43:11,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 98 transitions. [2021-10-28 09:43:11,882 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 64 [2021-10-28 09:43:11,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:11,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:11,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:11,883 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:11,883 INFO L791 eck$LassoCheckResult]: Stem: 189#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); 190#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_~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_~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;havoc main_~cond~0; 200#L85-1 [2021-10-28 09:43:11,883 INFO L793 eck$LassoCheckResult]: Loop: 200#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 224#L28 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; 222#L43 assume !(0 != main_~p1~0); 219#L43-2 assume !(0 != main_~p2~0); 217#L47-1 assume !(0 != main_~p3~0); 215#L51-1 assume 0 != main_~p4~0;main_~lk4~0 := 1; 214#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 212#L59-1 assume !(0 != main_~p1~0); 213#L65-1 assume !(0 != main_~p2~0); 235#L70-1 assume !(0 != main_~p3~0); 231#L75-1 assume !(0 != main_~p4~0); 228#L80-1 assume !(0 != main_~p5~0); 200#L85-1 [2021-10-28 09:43:11,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,884 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-10-28 09:43:11,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096841792] [2021-10-28 09:43:11,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,895 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:11,919 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1802449101, now seen corresponding path program 1 times [2021-10-28 09:43:11,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:11,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617276150] [2021-10-28 09:43:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:11,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:11,961 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 09:43:11,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:11,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617276150] [2021-10-28 09:43:11,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617276150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:11,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:11,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:43:11,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453836422] [2021-10-28 09:43:11,962 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:11,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:11,963 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. cyclomatic complexity: 36 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 09:43:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:11,979 INFO L93 Difference]: Finished difference Result 126 states and 182 transitions. [2021-10-28 09:43:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:11,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 182 transitions. [2021-10-28 09:43:11,983 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-10-28 09:43:11,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 182 transitions. [2021-10-28 09:43:11,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-10-28 09:43:11,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-10-28 09:43:11,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 182 transitions. [2021-10-28 09:43:11,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:43:11,987 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-28 09:43:11,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 182 transitions. [2021-10-28 09:43:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-28 09:43:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.4444444444444444) internal successors, (182), 125 states have internal predecessors, (182), 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 09:43:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 182 transitions. [2021-10-28 09:43:12,000 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-28 09:43:12,000 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 182 transitions. [2021-10-28 09:43:12,000 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:43:12,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 182 transitions. [2021-10-28 09:43:12,002 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 124 [2021-10-28 09:43:12,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:12,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:12,003 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:12,003 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:12,003 INFO L791 eck$LassoCheckResult]: Stem: 385#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(15);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 386#L-1 havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, main_~p1~0, main_~lk1~0, main_~p2~0, main_~lk2~0, main_~p3~0, main_~lk3~0, main_~p4~0, main_~lk4~0, main_~p5~0, main_~lk5~0, main_~cond~0;main_~p1~0 := main_#t~nondet7;havoc main_#t~nondet7;havoc main_~lk1~0;main_~p2~0 := main_#t~nondet8;havoc main_#t~nondet8;havoc main_~lk2~0;main_~p3~0 := main_#t~nondet9;havoc main_#t~nondet9;havoc main_~lk3~0;main_~p4~0 := main_#t~nondet10;havoc main_#t~nondet10;havoc main_~lk4~0;main_~p5~0 := main_#t~nondet11;havoc main_#t~nondet11;havoc main_~lk5~0;havoc main_~cond~0; 400#L85-1 [2021-10-28 09:43:12,004 INFO L793 eck$LassoCheckResult]: Loop: 400#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 435#L28 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; 431#L43 assume !(0 != main_~p1~0); 428#L43-2 assume !(0 != main_~p2~0); 426#L47-1 assume !(0 != main_~p3~0); 425#L51-1 assume !(0 != main_~p4~0); 421#L55-1 assume 0 != main_~p5~0;main_~lk5~0 := 1; 422#L59-1 assume !(0 != main_~p1~0); 447#L65-1 assume !(0 != main_~p2~0); 445#L70-1 assume !(0 != main_~p3~0); 442#L75-1 assume !(0 != main_~p4~0); 439#L80-1 assume !(0 != main_~p5~0); 400#L85-1 [2021-10-28 09:43:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-10-28 09:43:12,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:12,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700418003] [2021-10-28 09:43:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:12,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,014 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,026 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:12,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,026 INFO L85 PathProgramCache]: Analyzing trace with hash -27441739, now seen corresponding path program 1 times [2021-10-28 09:43:12,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:12,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999970423] [2021-10-28 09:43:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:12,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:43:12,045 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 09:43:12,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:43:12,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999970423] [2021-10-28 09:43:12,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999970423] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:43:12,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:43:12,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:43:12,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297904981] [2021-10-28 09:43:12,047 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:43:12,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:43:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:43:12,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:43:12,048 INFO L87 Difference]: Start difference. First operand 126 states and 182 transitions. cyclomatic complexity: 64 Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 09:43:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:43:12,066 INFO L93 Difference]: Finished difference Result 242 states and 338 transitions. [2021-10-28 09:43:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:43:12,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 242 states and 338 transitions. [2021-10-28 09:43:12,071 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-10-28 09:43:12,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 242 states to 242 states and 338 transitions. [2021-10-28 09:43:12,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 242 [2021-10-28 09:43:12,075 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 242 [2021-10-28 09:43:12,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 242 states and 338 transitions. [2021-10-28 09:43:12,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:43:12,078 INFO L681 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-28 09:43:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states and 338 transitions. [2021-10-28 09:43:12,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-28 09:43:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 242 states have (on average 1.396694214876033) internal successors, (338), 241 states have internal predecessors, (338), 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 09:43:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 338 transitions. [2021-10-28 09:43:12,102 INFO L704 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-28 09:43:12,102 INFO L587 BuchiCegarLoop]: Abstraction has 242 states and 338 transitions. [2021-10-28 09:43:12,102 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:43:12,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 338 transitions. [2021-10-28 09:43:12,105 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 240 [2021-10-28 09:43:12,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:43:12,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:43:12,105 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:43:12,106 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:43:12,106 INFO L791 eck$LassoCheckResult]: Stem: 759#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); 760#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_~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_~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;havoc main_~cond~0; 773#L85-1 [2021-10-28 09:43:12,106 INFO L793 eck$LassoCheckResult]: Loop: 773#L85-1 assume !false;main_~cond~0 := main_#t~nondet12;havoc main_#t~nondet12; 836#L28 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; 833#L43 assume !(0 != main_~p1~0); 829#L43-2 assume !(0 != main_~p2~0); 826#L47-1 assume !(0 != main_~p3~0); 820#L51-1 assume !(0 != main_~p4~0); 795#L55-1 assume !(0 != main_~p5~0); 796#L59-1 assume !(0 != main_~p1~0); 853#L65-1 assume !(0 != main_~p2~0); 842#L70-1 assume !(0 != main_~p3~0); 821#L75-1 assume !(0 != main_~p4~0); 823#L80-1 assume !(0 != main_~p5~0); 773#L85-1 [2021-10-28 09:43:12,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-10-28 09:43:12,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:12,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974843746] [2021-10-28 09:43:12,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:12,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,124 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,148 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,149 INFO L85 PathProgramCache]: Analyzing trace with hash 29816563, now seen corresponding path program 1 times [2021-10-28 09:43:12,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:12,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792599080] [2021-10-28 09:43:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:12,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,154 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,161 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:43:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1243965365, now seen corresponding path program 1 times [2021-10-28 09:43:12,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:43:12,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860306279] [2021-10-28 09:43:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:43:12,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:43:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,173 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:43:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:43:12,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:43:12,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:43:12 BoogieIcfgContainer [2021-10-28 09:43:12,815 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:43:12,815 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:43:12,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:43:12,828 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:43:12,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:43:11" (3/4) ... [2021-10-28 09:43:12,832 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:43:12,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:43:12,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:43:12,875 INFO L168 Benchmark]: Toolchain (without parser) took 2574.17 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 60.2 MB in the beginning and 79.0 MB in the end (delta: -18.8 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,875 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 102.8 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:12,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.43 ms. Allocated memory is still 102.8 MB. Free memory was 59.9 MB in the beginning and 77.1 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,877 INFO L168 Benchmark]: Boogie Preprocessor took 28.14 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:43:12,878 INFO L168 Benchmark]: RCFGBuilder took 454.75 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 64.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,878 INFO L168 Benchmark]: BuchiAutomizer took 1715.34 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.3 MB in the beginning and 81.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,879 INFO L168 Benchmark]: Witness Printer took 57.69 ms. Allocated memory is still 123.7 MB. Free memory was 81.0 MB in the beginning and 79.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:43:12,882 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 102.8 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.43 ms. Allocated memory is still 102.8 MB. Free memory was 59.9 MB in the beginning and 77.1 MB in the end (delta: -17.2 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.18 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.14 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 454.75 ms. Allocated memory is still 102.8 MB. Free memory was 74.5 MB in the beginning and 64.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1715.34 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.3 MB in the beginning and 81.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.69 ms. Allocated memory is still 123.7 MB. Free memory was 81.0 MB in the beginning and 79.0 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 4 terminating modules (4 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.4 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 242 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 242 states and ocurred in iteration 4. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 177 SDtfs, 89 SDslu, 100 SDs, 0 SdLazy, 20 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI4 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: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=3824} State at position 1 is {NULL=3827, NULL=0, p1=0, \result=0, p3=0, p2=0, p5=0, NULL=3824, p4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@610ecaea=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@372a63b9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7887f7b2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@63270ca9=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74e9c3bd=0, cond=11, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@10ba4132=11, NULL=3826, NULL=0, NULL=0, NULL=0, NULL=3825, lk3=0, lk4=0, lk5=0, NULL=0, lk1=0, lk2=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 26]: 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; [L24] int cond; Loop: [L26] COND TRUE 1 [L27] cond = __VERIFIER_nondet_int() [L28] COND FALSE !(cond == 0) [L31] lk1 = 0 [L33] lk2 = 0 [L35] lk3 = 0 [L37] lk4 = 0 [L39] lk5 = 0 [L43] COND FALSE !(p1 != 0) [L47] COND FALSE !(p2 != 0) [L51] COND FALSE !(p3 != 0) [L55] COND FALSE !(p4 != 0) [L59] COND FALSE !(p5 != 0) [L65] COND FALSE !(p1 != 0) [L70] COND FALSE !(p2 != 0) [L75] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L85] COND FALSE !(p5 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:43:12,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcfffe58-1d00-43e6-9e32-a4fcc00917ab/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...