./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya --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 ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:33:46,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:33:46,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 06:33:46,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:33:46,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:33:46,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:33:46,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:33:46,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:33:46,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:33:46,736 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:33:46,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:33:46,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:33:46,738 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:33:46,738 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 06:33:46,739 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 06:33:46,739 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 06:33:46,740 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 06:33:46,740 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 06:33:46,741 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 06:33:46,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:33:46,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 06:33:46,743 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:33:46,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:33:46,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:33:46,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:33:46,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 06:33:46,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 06:33:46,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 06:33:46,746 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:33:46,746 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:33:46,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:33:46,747 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 06:33:46,748 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:33:46,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:33:46,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:33:46,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:33:46,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:33:46,749 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 06:33:46,750 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_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d [2023-11-29 06:33:46,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:33:47,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:33:47,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:33:47,016 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:33:47,017 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:33:47,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2023-11-29 06:33:49,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:33:50,165 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:33:50,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2023-11-29 06:33:50,178 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/data/68560b21d/5a7b821eae17454b82e417075a44a62e/FLAGaf66abeb0 [2023-11-29 06:33:50,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/data/68560b21d/5a7b821eae17454b82e417075a44a62e [2023-11-29 06:33:50,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:33:50,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:33:50,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:33:50,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:33:50,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:33:50,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c21ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50, skipping insertion in model container [2023-11-29 06:33:50,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,248 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:33:50,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:33:50,595 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:33:50,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:33:50,684 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:33:50,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50 WrapperNode [2023-11-29 06:33:50,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:33:50,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:33:50,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:33:50,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:33:50,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,738 INFO L138 Inliner]: procedures = 123, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2023-11-29 06:33:50,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:33:50,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:33:50,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:33:50,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:33:50,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,781 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2023-11-29 06:33:50,782 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,782 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:33:50,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:33:50,804 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:33:50,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:33:50,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (1/1) ... [2023-11-29 06:33:50,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:33:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:33:50,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:33:50,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 06:33:50,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:33:50,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:33:50,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:33:50,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:33:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:33:50,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:33:50,993 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:33:50,996 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:33:51,249 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:33:51,260 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:33:51,261 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 06:33:51,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:33:51 BoogieIcfgContainer [2023-11-29 06:33:51,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:33:51,264 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 06:33:51,264 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 06:33:51,269 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 06:33:51,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:33:51,270 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:33:50" (1/3) ... [2023-11-29 06:33:51,271 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59b79758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:33:51, skipping insertion in model container [2023-11-29 06:33:51,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:33:51,272 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:33:50" (2/3) ... [2023-11-29 06:33:51,272 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@59b79758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:33:51, skipping insertion in model container [2023-11-29 06:33:51,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:33:51,273 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:33:51" (3/3) ... [2023-11-29 06:33:51,274 INFO L332 chiAutomizerObserver]: Analyzing ICFG tree_cnstr.i [2023-11-29 06:33:51,339 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 06:33:51,339 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 06:33:51,339 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 06:33:51,340 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 06:33:51,340 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 06:33:51,340 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 06:33:51,340 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 06:33:51,340 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 06:33:51,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2023-11-29 06:33:51,361 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:33:51,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:33:51,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:33:51,390 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:33:51,391 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:51,391 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 06:33:51,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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) [2023-11-29 06:33:51,395 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:33:51,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:33:51,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:33:51,396 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:33:51,396 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:51,402 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~nondet4#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4); 26#L545-4true [2023-11-29 06:33:51,403 INFO L750 eck$LassoCheckResult]: Loop: 26#L545-4true havoc main_#t~nondet4#1; 2#L532-1true assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 19#L535-2true assume !true; 9#L534-5true call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 21#L540true assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 11#L540-2true assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 14#L540-4true call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0; 17#L545true assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1; 7#L545-2true assume main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;call main_#t~malloc20#1.base, main_#t~malloc20#1.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$#1(main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc20#1.base, main_#t~malloc20#1.offset;call main_#t~mem21#1.base, main_#t~mem21#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem21#1.base, main_#t~mem21#1.offset, 4);havoc main_#t~mem21#1.base, main_#t~mem21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, 4 + main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset; 26#L545-4true [2023-11-29 06:33:51,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 06:33:51,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:51,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035238938] [2023-11-29 06:33:51,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:51,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:51,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:51,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:51,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1807228567, now seen corresponding path program 1 times [2023-11-29 06:33:51,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:51,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423802919] [2023-11-29 06:33:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:51,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:51,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423802919] [2023-11-29 06:33:51,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423802919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:51,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:33:51,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064250616] [2023-11-29 06:33:51,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:51,623 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:33:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:51,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:33:51,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:33:51,657 INFO L87 Difference]: Start difference. First operand has 27 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 26 states have internal predecessors, (44), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-29 06:33:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:51,665 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2023-11-29 06:33:51,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 40 transitions. [2023-11-29 06:33:51,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:33:51,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 36 transitions. [2023-11-29 06:33:51,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-11-29 06:33:51,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2023-11-29 06:33:51,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 36 transitions. [2023-11-29 06:33:51,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:51,673 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 36 transitions. [2023-11-29 06:33:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 36 transitions. [2023-11-29 06:33:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-29 06:33:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 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) [2023-11-29 06:33:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 36 transitions. [2023-11-29 06:33:51,694 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 36 transitions. [2023-11-29 06:33:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:33:51,697 INFO L428 stractBuchiCegarLoop]: Abstraction has 23 states and 36 transitions. [2023-11-29 06:33:51,697 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 06:33:51,698 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 36 transitions. [2023-11-29 06:33:51,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:33:51,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:33:51,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:33:51,699 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:33:51,699 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:51,699 INFO L748 eck$LassoCheckResult]: Stem: 84#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2); 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~nondet4#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4); 75#L545-4 [2023-11-29 06:33:51,699 INFO L750 eck$LassoCheckResult]: Loop: 75#L545-4 havoc main_#t~nondet4#1; 62#L532-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 64#L535-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 65#L534-1 assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0; 66#L534-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 67#L534-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 77#L540 assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 78#L540-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 82#L540-4 call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0; 69#L545 assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1; 70#L545-2 assume main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;call main_#t~malloc20#1.base, main_#t~malloc20#1.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$#1(main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc20#1.base, main_#t~malloc20#1.offset;call main_#t~mem21#1.base, main_#t~mem21#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem21#1.base, main_#t~mem21#1.offset, 4);havoc main_#t~mem21#1.base, main_#t~mem21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, 4 + main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset; 75#L545-4 [2023-11-29 06:33:51,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:51,700 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-29 06:33:51,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:51,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390619165] [2023-11-29 06:33:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:51,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:51,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:51,738 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:51,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 639218396, now seen corresponding path program 1 times [2023-11-29 06:33:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396654344] [2023-11-29 06:33:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396654344] [2023-11-29 06:33:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396654344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:52,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:33:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142521995] [2023-11-29 06:33:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:52,057 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:33:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:33:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:33:52,059 INFO L87 Difference]: Start difference. First operand 23 states and 36 transitions. cyclomatic complexity: 15 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-29 06:33:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:52,191 INFO L93 Difference]: Finished difference Result 34 states and 51 transitions. [2023-11-29 06:33:52,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 51 transitions. [2023-11-29 06:33:52,193 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-29 06:33:52,195 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 51 transitions. [2023-11-29 06:33:52,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-11-29 06:33:52,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-11-29 06:33:52,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 51 transitions. [2023-11-29 06:33:52,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:52,197 INFO L218 hiAutomatonCegarLoop]: Abstraction has 34 states and 51 transitions. [2023-11-29 06:33:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 51 transitions. [2023-11-29 06:33:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2023-11-29 06:33:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 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) [2023-11-29 06:33:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 41 transitions. [2023-11-29 06:33:52,201 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 41 transitions. [2023-11-29 06:33:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:33:52,202 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 41 transitions. [2023-11-29 06:33:52,203 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 06:33:52,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 41 transitions. [2023-11-29 06:33:52,204 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2023-11-29 06:33:52,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:33:52,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:33:52,204 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:33:52,205 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:52,205 INFO L748 eck$LassoCheckResult]: Stem: 153#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(13, 2); 144#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~nondet4#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4); 143#L545-4 [2023-11-29 06:33:52,205 INFO L750 eck$LassoCheckResult]: Loop: 143#L545-4 havoc main_#t~nondet4#1; 129#L532-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 131#L535-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 132#L534-1 assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0; 133#L534-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 155#L534-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 146#L540 assume !main_#t~short13#1; 147#L540-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 151#L540-4 call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0; 137#L545 assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1; 138#L545-2 assume main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1;call main_#t~malloc20#1.base, main_#t~malloc20#1.offset := #Ultimate.allocOnHeap(8);call write~$Pointer$#1(main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc20#1.base, main_#t~malloc20#1.offset;call main_#t~mem21#1.base, main_#t~mem21#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem21#1.base, main_#t~mem21#1.offset, 4);havoc main_#t~mem21#1.base, main_#t~mem21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, 4 + main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset; 143#L545-4 [2023-11-29 06:33:52,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-29 06:33:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469088978] [2023-11-29 06:33:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:52,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:52,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:52,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 641065438, now seen corresponding path program 1 times [2023-11-29 06:33:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:52,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577200143] [2023-11-29 06:33:52,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:52,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:52,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:52,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:52,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 264589532, now seen corresponding path program 1 times [2023-11-29 06:33:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196914449] [2023-11-29 06:33:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:52,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:33:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:33:52,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:33:52,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196914449] [2023-11-29 06:33:52,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196914449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:33:52,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:33:52,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:33:52,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024165568] [2023-11-29 06:33:52,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:33:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:33:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:33:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:33:57,139 INFO L87 Difference]: Start difference. First operand 27 states and 41 transitions. cyclomatic complexity: 16 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2023-11-29 06:33:57,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:33:57,366 INFO L93 Difference]: Finished difference Result 64 states and 94 transitions. [2023-11-29 06:33:57,367 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 94 transitions. [2023-11-29 06:33:57,369 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 52 [2023-11-29 06:33:57,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 64 states and 94 transitions. [2023-11-29 06:33:57,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-29 06:33:57,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2023-11-29 06:33:57,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 94 transitions. [2023-11-29 06:33:57,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:33:57,374 INFO L218 hiAutomatonCegarLoop]: Abstraction has 64 states and 94 transitions. [2023-11-29 06:33:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 94 transitions. [2023-11-29 06:33:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 39. [2023-11-29 06:33:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.4615384615384615) internal successors, (57), 38 states have internal predecessors, (57), 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) [2023-11-29 06:33:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-11-29 06:33:57,381 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-11-29 06:33:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:33:57,382 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-11-29 06:33:57,382 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 06:33:57,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 57 transitions. [2023-11-29 06:33:57,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 36 [2023-11-29 06:33:57,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:33:57,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:33:57,384 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 06:33:57,384 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:33:57,385 INFO L748 eck$LassoCheckResult]: Stem: 260#$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(13, 2); 250#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~nondet18#1, main_#t~short19#1, main_#t~malloc20#1.base, main_#t~malloc20#1.offset, main_#t~mem21#1.base, main_#t~mem21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~nondet4#1, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~short25#1, main_#t~mem29#1.base, main_#t~mem29#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~pred~0#1.base, main_~pred~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(8);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4); 251#L545-4 [2023-11-29 06:33:57,385 INFO L750 eck$LassoCheckResult]: Loop: 251#L545-4 havoc main_#t~nondet4#1; 266#L532-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 249#L535-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 237#L534-1 assume !main_#t~short7#1; 238#L534-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 239#L534-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 267#L540 assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 268#L540-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 261#L540-4 call main_#t~mem17#1.base, main_#t~mem17#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short19#1 := main_#t~mem17#1.base == 0 && main_#t~mem17#1.offset == 0; 241#L545 assume main_#t~short19#1;havoc main_#t~nondet18#1;main_#t~short19#1 := 0 != main_#t~nondet18#1; 242#L545-2 assume !main_#t~short19#1;havoc main_#t~mem17#1.base, main_#t~mem17#1.offset;havoc main_#t~nondet18#1;havoc main_#t~short19#1; 251#L545-4 [2023-11-29 06:33:57,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-29 06:33:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:57,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639640085] [2023-11-29 06:33:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:57,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:57,411 INFO L85 PathProgramCache]: Analyzing trace with hash -170128228, now seen corresponding path program 1 times [2023-11-29 06:33:57,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:57,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787166346] [2023-11-29 06:33:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:57,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:57,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:33:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash -546604134, now seen corresponding path program 1 times [2023-11-29 06:33:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:33:57,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544330738] [2023-11-29 06:33:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:33:57,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:33:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:57,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:33:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:58,073 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:33:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:33:58,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:33:58 BoogieIcfgContainer [2023-11-29 06:33:58,123 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 06:33:58,123 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:33:58,123 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:33:58,124 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:33:58,124 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:33:51" (3/4) ... [2023-11-29 06:33:58,126 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 06:33:58,165 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:33:58,165 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:33:58,166 INFO L158 Benchmark]: Toolchain (without parser) took 7972.46ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 120.8MB in the beginning and 143.3MB in the end (delta: -22.5MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,166 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:33:58,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.67ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 103.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.23ms. Allocated memory is still 161.5MB. Free memory was 103.6MB in the beginning and 101.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,168 INFO L158 Benchmark]: Boogie Preprocessor took 63.57ms. Allocated memory is still 161.5MB. Free memory was 101.2MB in the beginning and 98.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,168 INFO L158 Benchmark]: RCFGBuilder took 459.09ms. Allocated memory is still 161.5MB. Free memory was 98.4MB in the beginning and 78.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,169 INFO L158 Benchmark]: BuchiAutomizer took 6858.53ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 77.8MB in the beginning and 145.3MB in the end (delta: -67.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:33:58,169 INFO L158 Benchmark]: Witness Printer took 41.85ms. Allocated memory is still 199.2MB. Free memory was 145.3MB in the beginning and 143.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:33:58,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.67ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 103.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.23ms. Allocated memory is still 161.5MB. Free memory was 103.6MB in the beginning and 101.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.57ms. Allocated memory is still 161.5MB. Free memory was 101.2MB in the beginning and 98.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.09ms. Allocated memory is still 161.5MB. Free memory was 98.4MB in the beginning and 78.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 6858.53ms. Allocated memory was 161.5MB in the beginning and 199.2MB in the end (delta: 37.7MB). Free memory was 77.8MB in the beginning and 145.3MB in the end (delta: -67.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.85ms. Allocated memory is still 199.2MB. Free memory was 145.3MB in the beginning and 143.3MB in the end (delta: 2.0MB). 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 (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 39 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 6.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 32 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 97 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 532]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L529] struct TreeNode* root = malloc(sizeof(*root)), *n; [L529] struct TreeNode* root = malloc(sizeof(*root)), *n; [L530] root->left = ((void *)0) [L531] root->right = ((void *)0) Loop: [L532] COND TRUE __VERIFIER_nondet_int() [L533] n = root [L534] EXPR n->left [L534] n->left && n->right [L534] n->left && n->right [L534] COND FALSE !(n->left && n->right) [L540] EXPR n->left [L540] !n->left && __VERIFIER_nondet_int() [L540] !n->left && __VERIFIER_nondet_int() [L540] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L545] EXPR n->right [L545] !n->right && __VERIFIER_nondet_int() [L545] !n->right && __VERIFIER_nondet_int() [L545] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 532]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L529] struct TreeNode* root = malloc(sizeof(*root)), *n; [L529] struct TreeNode* root = malloc(sizeof(*root)), *n; [L530] root->left = ((void *)0) [L531] root->right = ((void *)0) Loop: [L532] COND TRUE __VERIFIER_nondet_int() [L533] n = root [L534] EXPR n->left [L534] n->left && n->right [L534] n->left && n->right [L534] COND FALSE !(n->left && n->right) [L540] EXPR n->left [L540] !n->left && __VERIFIER_nondet_int() [L540] !n->left && __VERIFIER_nondet_int() [L540] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L545] EXPR n->right [L545] !n->right && __VERIFIER_nondet_int() [L545] !n->right && __VERIFIER_nondet_int() [L545] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 06:33:58,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e96c13a-8f4a-4cf6-a1cb-e9748aab25d4/bin/uautomizer-verify-BQ2R08f2Ya/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)