./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --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 b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:34:36,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:34:36,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-23 22:34:36,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:34:36,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:34:36,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:34:36,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:34:36,982 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:34:36,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:34:36,988 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:34:36,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:34:36,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:34:36,991 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:34:36,993 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-23 22:34:36,994 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-23 22:34:36,994 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-23 22:34:36,995 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-23 22:34:36,995 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-23 22:34:36,996 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-23 22:34:36,996 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:34:36,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-23 22:34:36,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:34:36,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:34:36,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:34:36,999 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:34:36,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-23 22:34:37,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-23 22:34:37,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-23 22:34:37,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:34:37,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:34:37,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:34:37,004 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-23 22:34:37,004 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:34:37,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:34:37,005 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:34:37,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:34:37,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:34:37,006 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-23 22:34:37,006 INFO L153 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_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2023-11-23 22:34:37,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:34:37,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:34:37,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:34:37,335 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:34:37,335 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:34:37,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/loops/nec11.c [2023-11-23 22:34:40,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:34:40,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:34:40,712 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/sv-benchmarks/c/loops/nec11.c [2023-11-23 22:34:40,719 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/data/500621097/a0d05d9cc1734e629b28ab417932ed36/FLAG12d3baf5d [2023-11-23 22:34:40,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/data/500621097/a0d05d9cc1734e629b28ab417932ed36 [2023-11-23 22:34:40,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:34:40,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:34:40,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:34:40,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:34:40,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:34:40,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:40,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2072548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40, skipping insertion in model container [2023-11-23 22:34:40,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:40,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:34:40,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:34:40,957 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:34:40,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:34:40,988 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:34:40,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40 WrapperNode [2023-11-23 22:34:40,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:34:40,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:34:40,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:34:40,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:34:40,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,018 INFO L138 Inliner]: procedures = 13, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2023-11-23 22:34:41,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:34:41,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:34:41,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:34:41,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:34:41,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,032 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,041 INFO L189 HeapSplitter]: Split 10 memory accesses to 2 slices as follows [2, 8] [2023-11-23 22:34:41,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,055 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:34:41,056 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:34:41,056 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:34:41,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:34:41,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (1/1) ... [2023-11-23 22:34:41,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:41,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:41,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-23 22:34:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:34:41,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:34:41,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:34:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:34:41,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:34:41,203 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:34:41,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:34:41,323 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:34:41,331 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:34:41,338 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:34:41,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:34:41 BoogieIcfgContainer [2023-11-23 22:34:41,341 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:34:41,342 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-23 22:34:41,342 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-23 22:34:41,346 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-23 22:34:41,347 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:34:41,347 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 10:34:40" (1/3) ... [2023-11-23 22:34:41,349 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59549495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:34:41, skipping insertion in model container [2023-11-23 22:34:41,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:34:41,349 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:34:40" (2/3) ... [2023-11-23 22:34:41,349 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59549495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 10:34:41, skipping insertion in model container [2023-11-23 22:34:41,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-23 22:34:41,350 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:34:41" (3/3) ... [2023-11-23 22:34:41,351 INFO L332 chiAutomizerObserver]: Analyzing ICFG nec11.c [2023-11-23 22:34:41,420 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-23 22:34:41,420 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-23 22:34:41,420 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-23 22:34:41,420 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-23 22:34:41,421 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-23 22:34:41,421 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-23 22:34:41,421 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-23 22:34:41,421 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-23 22:34:41,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-11-23 22:34:41,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:34:41,440 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:34:41,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:34:41,445 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 22:34:41,445 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 22:34:41,445 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-23 22:34:41,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-11-23 22:34:41,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:34:41,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:34:41,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:34:41,447 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-23 22:34:41,447 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 22:34:41,454 INFO L748 eck$LassoCheckResult]: Stem: 11#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 13#L21-2true [2023-11-23 22:34:41,455 INFO L750 eck$LassoCheckResult]: Loop: 13#L21-2true assume !!(0 != main_~c~0#1 % 256); 12#L23true assume !(4 == main_~len~0#1); 9#L23-2true assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 13#L21-2true [2023-11-23 22:34:41,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-23 22:34:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:41,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122197044] [2023-11-23 22:34:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:41,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:41,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2023-11-23 22:34:41,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:41,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265259873] [2023-11-23 22:34:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:41,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:41,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2023-11-23 22:34:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:41,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772647759] [2023-11-23 22:34:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:41,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:41,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:42,304 INFO L210 LassoAnalysis]: Preferences: [2023-11-23 22:34:42,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-23 22:34:42,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-23 22:34:42,306 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-23 22:34:42,306 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-23 22:34:42,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:42,307 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-23 22:34:42,307 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-23 22:34:42,307 INFO L133 ssoRankerPreferences]: Filename of dumped script: nec11.c_Iteration1_Lasso [2023-11-23 22:34:42,307 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-23 22:34:42,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-23 22:34:42,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,337 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,358 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,373 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,511 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,514 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-23 22:34:42,900 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-23 22:34:42,905 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-23 22:34:42,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:42,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:42,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:42,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-23 22:34:42,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:34:42,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:34:42,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:34:42,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:34:42,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:34:42,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:34:42,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:34:42,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:34:42,943 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:34:42,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-23 22:34:42,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:42,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:42,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:42,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-23 22:34:42,965 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:34:42,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:34:42,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:34:42,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:34:42,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:34:42,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-23 22:34:42,981 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-23 22:34:43,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:34:43,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:34:43,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:43,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:43,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-23 22:34:43,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:34:43,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:34:43,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:34:43,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:34:43,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:34:43,048 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-23 22:34:43,048 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-23 22:34:43,080 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:34:43,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:34:43,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:43,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:43,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:43,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:34:43,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:34:43,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-23 22:34:43,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:34:43,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-23 22:34:43,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:34:43,126 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-23 22:34:43,126 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-23 22:34:43,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-23 22:34:43,141 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-23 22:34:43,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-23 22:34:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:43,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:43,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:43,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-23 22:34:43,176 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-23 22:34:43,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-23 22:34:43,177 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-23 22:34:43,177 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-23 22:34:43,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-23 22:34:43,208 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2023-11-23 22:34:43,208 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2023-11-23 22:34:43,237 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-23 22:34:43,269 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2023-11-23 22:34:43,270 INFO L444 ModelExtractionUtils]: 3 out of 11 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-11-23 22:34:43,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-23 22:34:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:43,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-23 22:34:43,331 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-23 22:34:43,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-23 22:34:43,364 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2023-11-23 22:34:43,364 INFO L513 LassoAnalysis]: Proved termination. [2023-11-23 22:34:43,364 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~len~0#1) = -2*ULTIMATE.start_main_~len~0#1 + 9 Supporting invariants [-1*ULTIMATE.start_main_~len~0#1 + 4 >= 0] [2023-11-23 22:34:43,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:34:43,396 INFO L156 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2023-11-23 22:34:43,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:34:43,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:34:43,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:34:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:34:43,485 WARN L260 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:34:43,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:34:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:34:43,587 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-23 22:34:43,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-23 22:34:43,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) Result 37 states and 48 transitions. Complement of second has 8 states. [2023-11-23 22:34:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-23 22:34:43,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2023-11-23 22:34:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-11-23 22:34:43,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-23 22:34:43,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:34:43,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-23 22:34:43,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:34:43,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-23 22:34:43,669 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-23 22:34:43,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2023-11-23 22:34:43,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:34:43,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 10 states and 13 transitions. [2023-11-23 22:34:43,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-23 22:34:43,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-23 22:34:43,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-23 22:34:43,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:34:43,679 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-23 22:34:43,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-23 22:34:43,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-23 22:34:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-11-23 22:34:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-23 22:34:43,726 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-23 22:34:43,726 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-23 22:34:43,726 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-23 22:34:43,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2023-11-23 22:34:43,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:34:43,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:34:43,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:34:43,728 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-23 22:34:43,728 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 22:34:43,728 INFO L748 eck$LassoCheckResult]: Stem: 111#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 112#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 113#L21-2 assume !!(0 != main_~c~0#1 % 256); 109#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 105#L23-2 [2023-11-23 22:34:43,728 INFO L750 eck$LassoCheckResult]: Loop: 105#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 106#L21-2 assume !!(0 != main_~c~0#1 % 256); 114#L23 assume !(4 == main_~len~0#1); 105#L23-2 [2023-11-23 22:34:43,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-23 22:34:43,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:43,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673644939] [2023-11-23 22:34:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:43,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:43,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:34:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:34:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:34:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:34:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673644939] [2023-11-23 22:34:43,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673644939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:34:43,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:34:43,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:34:43,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663682919] [2023-11-23 22:34:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:34:43,800 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:34:43,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2023-11-23 22:34:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108496476] [2023-11-23 22:34:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:43,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:43,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:34:43,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:34:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:34:43,852 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-23 22:34:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:34:43,862 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-11-23 22:34:43,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2023-11-23 22:34:43,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-23 22:34:43,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 15 transitions. [2023-11-23 22:34:43,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-23 22:34:43,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-23 22:34:43,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 15 transitions. [2023-11-23 22:34:43,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:34:43,864 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-23 22:34:43,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 15 transitions. [2023-11-23 22:34:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 10. [2023-11-23 22:34:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 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) [2023-11-23 22:34:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-23 22:34:43,866 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 22:34:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:34:43,867 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-23 22:34:43,868 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-23 22:34:43,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2023-11-23 22:34:43,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-23 22:34:43,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:34:43,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:34:43,869 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-23 22:34:43,869 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-23 22:34:43,869 INFO L748 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 143#L21-2 assume !!(0 != main_~c~0#1 % 256); 140#L23 assume !(4 == main_~len~0#1); 137#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 138#L21-2 assume !!(0 != main_~c~0#1 % 256); 139#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 135#L23-2 [2023-11-23 22:34:43,869 INFO L750 eck$LassoCheckResult]: Loop: 135#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 136#L21-2 assume !!(0 != main_~c~0#1 % 256); 144#L23 assume !(4 == main_~len~0#1); 135#L23-2 [2023-11-23 22:34:43,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1810721677, now seen corresponding path program 1 times [2023-11-23 22:34:43,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:43,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049995265] [2023-11-23 22:34:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:34:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:34:43,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:34:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049995265] [2023-11-23 22:34:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049995265] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:34:43,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823396769] [2023-11-23 22:34:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:43,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:34:43,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:34:43,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:34:43,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:34:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:34:43,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:34:43,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:34:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:34:44,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:34:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:34:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823396769] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:34:44,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:34:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-23 22:34:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748307660] [2023-11-23 22:34:44,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:34:44,046 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-23 22:34:44,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:44,047 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2023-11-23 22:34:44,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:44,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516736264] [2023-11-23 22:34:44,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:44,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:44,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:34:44,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:34:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:34:44,094 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 4 Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-23 22:34:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:34:44,128 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2023-11-23 22:34:44,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 36 transitions. [2023-11-23 22:34:44,133 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2023-11-23 22:34:44,139 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 31 states and 33 transitions. [2023-11-23 22:34:44,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-23 22:34:44,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-23 22:34:44,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 33 transitions. [2023-11-23 22:34:44,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-23 22:34:44,140 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-23 22:34:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 33 transitions. [2023-11-23 22:34:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-11-23 22:34:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 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) [2023-11-23 22:34:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-23 22:34:44,148 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-23 22:34:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:34:44,150 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-23 22:34:44,150 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-23 22:34:44,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 30 transitions. [2023-11-23 22:34:44,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-23 22:34:44,151 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-23 22:34:44,151 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-23 22:34:44,152 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 1, 1, 1] [2023-11-23 22:34:44,152 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2023-11-23 22:34:44,152 INFO L748 eck$LassoCheckResult]: Stem: 231#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(8, 2);call write~init~int#1(110, 2, 0, 1);call write~init~int#1(101, 2, 1, 1);call write~init~int#1(99, 2, 2, 1);call write~init~int#1(49, 2, 3, 1);call write~init~int#1(49, 2, 4, 1);call write~init~int#1(46, 2, 5, 1);call write~init~int#1(99, 2, 6, 1);call write~init~int#1(0, 2, 7, 1);call #Ultimate.allocInit(12, 3); 232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~a~0#1, main_~len~0#1, main_~c~0#1, main_~i~0#1;havoc main_~a~0#1;main_~len~0#1 := 0;havoc main_#t~nondet4#1;main_~c~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~i~0#1; 233#L21-2 assume !!(0 != main_~c~0#1 % 256); 230#L23 assume !(4 == main_~len~0#1); 227#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 228#L21-2 assume !!(0 != main_~c~0#1 % 256); 234#L23 assume !(4 == main_~len~0#1); 252#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 251#L21-2 assume !!(0 != main_~c~0#1 % 256); 250#L23 assume !(4 == main_~len~0#1); 249#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 248#L21-2 assume !!(0 != main_~c~0#1 % 256); 240#L23 assume !(4 == main_~len~0#1); 242#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 239#L21-2 assume !!(0 != main_~c~0#1 % 256); 229#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2023-11-23 22:34:44,152 INFO L750 eck$LassoCheckResult]: Loop: 225#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 226#L21-2 assume !!(0 != main_~c~0#1 % 256); 235#L23 assume !(4 == main_~len~0#1); 236#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 247#L21-2 assume !!(0 != main_~c~0#1 % 256); 246#L23 assume !(4 == main_~len~0#1); 245#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 244#L21-2 assume !!(0 != main_~c~0#1 % 256); 243#L23 assume !(4 == main_~len~0#1); 238#L23-2 assume 0 <= main_~len~0#1 % 4294967296 && main_~len~0#1 % 4294967296 < 5;main_~a~0#1 := main_~a~0#1[main_~len~0#1 := 0];main_#t~post5#1 := main_~len~0#1;main_~len~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 241#L21-2 assume !!(0 != main_~c~0#1 % 256); 237#L23 assume 4 == main_~len~0#1;main_~len~0#1 := 0; 225#L23-2 [2023-11-23 22:34:44,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:44,153 INFO L85 PathProgramCache]: Analyzing trace with hash 658202022, now seen corresponding path program 2 times [2023-11-23 22:34:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:44,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595387474] [2023-11-23 22:34:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:44,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:44,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:44,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1957011391, now seen corresponding path program 1 times [2023-11-23 22:34:44,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:44,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566575286] [2023-11-23 22:34:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:44,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:44,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:34:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash -282022428, now seen corresponding path program 3 times [2023-11-23 22:34:44,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:34:44,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675915388] [2023-11-23 22:34:44,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:34:44,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:34:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:34:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2023-11-23 22:34:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:34:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:34:44,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 10:34:44 BoogieIcfgContainer [2023-11-23 22:34:44,936 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-23 22:34:44,937 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:34:44,937 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:34:44,937 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:34:44,937 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:34:41" (3/4) ... [2023-11-23 22:34:44,939 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-23 22:34:44,983 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:34:44,983 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:34:44,984 INFO L158 Benchmark]: Toolchain (without parser) took 4238.14ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 107.0MB in the beginning and 48.0MB in the end (delta: 59.0MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,985 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:34:44,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.84ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 96.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.50ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,986 INFO L158 Benchmark]: Boogie Preprocessor took 36.02ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 93.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:34:44,986 INFO L158 Benchmark]: RCFGBuilder took 284.94ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 84.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,987 INFO L158 Benchmark]: BuchiAutomizer took 3593.90ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 84.0MB in the beginning and 51.2MB in the end (delta: 32.9MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,987 INFO L158 Benchmark]: Witness Printer took 47.03ms. Allocated memory is still 178.3MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:34:44,990 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 70.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.84ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 96.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.50ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.02ms. Allocated memory is still 138.4MB. Free memory was 95.0MB in the beginning and 93.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.94ms. Allocated memory is still 138.4MB. Free memory was 93.3MB in the beginning and 84.0MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3593.90ms. Allocated memory was 138.4MB in the beginning and 178.3MB in the end (delta: 39.8MB). Free memory was 84.0MB in the beginning and 51.2MB in the end (delta: 32.9MB). Peak memory consumption was 73.6MB. Max. memory is 16.1GB. * Witness Printer took 47.03ms. Allocated memory is still 178.3MB. Free memory was 50.1MB in the beginning and 48.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (9 + (-2 * len)) and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.5s and 4 iterations. TraceHistogramMax:5. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 16 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU2 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital139 mio100 ax100 hnf100 lsp41 ukn44 mio100 lsp69 div305 bol100 ite100 ukn100 eq154 hnf96 smp56 dnf165 smp100 tf100 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 207ms VariablesStem: 1 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [len=0] [L21] COND TRUE \read(c) VAL [c=1, len=0] [L23] COND FALSE !(len==4) VAL [c=1, len=0] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=1] [L21] COND TRUE \read(c) VAL [c=1, len=1] [L23] COND FALSE !(len==4) VAL [c=1, len=1] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=2] [L21] COND TRUE \read(c) VAL [c=1, len=2] [L23] COND FALSE !(len==4) VAL [c=1, len=2] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=3] [L21] COND TRUE \read(c) VAL [c=1, len=3] [L23] COND FALSE !(len==4) VAL [c=1, len=3] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=4] [L21] COND TRUE \read(c) VAL [c=1, len=4] [L23] COND TRUE len==4 [L24] len =0 VAL [c=1, len=0] Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [len=0] [L21] COND TRUE \read(c) VAL [c=1, len=0] [L23] COND FALSE !(len==4) VAL [c=1, len=0] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=1] [L21] COND TRUE \read(c) VAL [c=1, len=1] [L23] COND FALSE !(len==4) VAL [c=1, len=1] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=2] [L21] COND TRUE \read(c) VAL [c=1, len=2] [L23] COND FALSE !(len==4) VAL [c=1, len=2] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=3] [L21] COND TRUE \read(c) VAL [c=1, len=3] [L23] COND FALSE !(len==4) VAL [c=1, len=3] [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ VAL [c=1, len=4] [L21] COND TRUE \read(c) VAL [c=1, len=4] [L23] COND TRUE len==4 [L24] len =0 VAL [c=1, len=0] Loop: [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND FALSE !(len==4) [L26] EXPR a[len] [L26] a[len]=0 [L28] len++ [L21] COND TRUE \read(c) [L23] COND TRUE len==4 [L24] len =0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 22:34:45,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:34:45,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8973a664-86d1-4d5d-8eba-d3e549954437/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)