./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:27:00,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:27:00,805 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:27:00,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:27:00,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:27:00,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:27:00,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:27:00,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:27:00,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:27:00,867 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:27:00,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:27:00,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:27:00,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:27:00,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:27:00,872 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:27:00,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:27:00,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:27:00,874 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:27:00,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:27:00,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:27:00,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:27:00,876 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:27:00,876 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:27:00,876 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:27:00,877 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:27:00,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:27:00,878 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:27:00,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:27:00,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:27:00,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:27:00,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:27:00,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:00,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:27:00,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:27:00,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:27:00,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:27:00,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:27:00,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:27:00,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:27:00,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:27:00,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:27:00,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:27:00,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2023-11-21 22:27:01,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:27:01,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:27:01,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:27:01,243 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:27:01,244 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:27:01,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-21 22:27:04,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:27:04,696 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:27:04,697 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-21 22:27:04,712 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/data/450e10aa7/654b7c3b5f8442ec890aa0d1496189b9/FLAG792e50ff0 [2023-11-21 22:27:04,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/data/450e10aa7/654b7c3b5f8442ec890aa0d1496189b9 [2023-11-21 22:27:04,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:27:04,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:27:04,733 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:04,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:27:04,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:27:04,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:04" (1/1) ... [2023-11-21 22:27:04,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc2f3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:04, skipping insertion in model container [2023-11-21 22:27:04,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:27:04" (1/1) ... [2023-11-21 22:27:04,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:27:05,089 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2023-11-21 22:27:05,095 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2023-11-21 22:27:05,097 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2023-11-21 22:27:05,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:05,111 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:27:05,151 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22365,22378] [2023-11-21 22:27:05,152 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22471,22484] [2023-11-21 22:27:05,154 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/sv-benchmarks/c/forester-heap/dll-circular-1.i[22595,22608] [2023-11-21 22:27:05,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:27:05,189 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:27:05,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05 WrapperNode [2023-11-21 22:27:05,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:27:05,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:05,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:27:05,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:27:05,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,237 INFO L138 Inliner]: procedures = 119, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2023-11-21 22:27:05,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:27:05,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:27:05,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:27:05,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:27:05,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,254 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,268 INFO L187 HeapSplitter]: Split 22 memory accesses to 2 slices as follows [2, 20] [2023-11-21 22:27:05,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:27:05,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:27:05,289 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:27:05,289 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:27:05,290 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (1/1) ... [2023-11-21 22:27:05,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:27:05,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:05,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:27:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:27:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:27:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:27:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:27:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:27:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:27:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:27:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:27:05,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:27:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:27:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:27:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:27:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:27:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:27:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:27:05,511 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:27:05,513 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:27:05,741 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:27:05,785 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:27:05,789 INFO L308 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-21 22:27:05,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:05 BoogieIcfgContainer [2023-11-21 22:27:05,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:27:05,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:27:05,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:27:05,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:27:05,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:27:04" (1/3) ... [2023-11-21 22:27:05,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e606ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:05, skipping insertion in model container [2023-11-21 22:27:05,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:27:05" (2/3) ... [2023-11-21 22:27:05,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e606ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:27:05, skipping insertion in model container [2023-11-21 22:27:05,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:05" (3/3) ... [2023-11-21 22:27:05,822 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2023-11-21 22:27:05,843 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:27:05,843 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-21 22:27:05,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:27:05,908 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2762e260, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:27:05,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-21 22:27:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 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) [2023-11-21 22:27:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:27:05,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:05,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:27:05,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:05,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:05,924 INFO L85 PathProgramCache]: Analyzing trace with hash 149304739, now seen corresponding path program 1 times [2023-11-21 22:27:05,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:05,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098254126] [2023-11-21 22:27:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:05,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:06,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:06,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098254126] [2023-11-21 22:27:06,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098254126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850255141] [2023-11-21 22:27:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:06,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:27:06,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:27:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:27:06,255 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 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 2.5) internal successors, (5), 2 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) [2023-11-21 22:27:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:06,286 INFO L93 Difference]: Finished difference Result 57 states and 91 transitions. [2023-11-21 22:27:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:27:06,288 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) Word has length 5 [2023-11-21 22:27:06,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:06,302 INFO L225 Difference]: With dead ends: 57 [2023-11-21 22:27:06,302 INFO L226 Difference]: Without dead ends: 24 [2023-11-21 22:27:06,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:27:06,310 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:06,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:27:06,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-21 22:27:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-21 22:27:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-11-21 22:27:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-21 22:27:06,349 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2023-11-21 22:27:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:06,349 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-21 22:27:06,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2023-11-21 22:27:06,351 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-21 22:27:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 22:27:06,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:06,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-21 22:27:06,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:27:06,355 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 292511250, now seen corresponding path program 1 times [2023-11-21 22:27:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:06,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973345597] [2023-11-21 22:27:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:06,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:06,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973345597] [2023-11-21 22:27:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973345597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:06,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:06,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:27:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270691077] [2023-11-21 22:27:06,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:06,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:27:06,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:27:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:27:06,799 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-21 22:27:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:06,925 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-11-21 22:27:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:27:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-11-21 22:27:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:06,927 INFO L225 Difference]: With dead ends: 39 [2023-11-21 22:27:06,928 INFO L226 Difference]: Without dead ends: 35 [2023-11-21 22:27:06,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:27:06,930 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:06,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 40 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:27:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-21 22:27:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2023-11-21 22:27:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 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) [2023-11-21 22:27:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-11-21 22:27:06,942 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 6 [2023-11-21 22:27:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-11-21 22:27:06,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-21 22:27:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-21 22:27:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:27:06,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:06,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:27:06,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:06,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 393679078, now seen corresponding path program 1 times [2023-11-21 22:27:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162952511] [2023-11-21 22:27:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:07,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162952511] [2023-11-21 22:27:07,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162952511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:27:07,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:27:07,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:27:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865864819] [2023-11-21 22:27:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:27:07,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:27:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:27:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:07,051 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.0) 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) [2023-11-21 22:27:07,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:07,099 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2023-11-21 22:27:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:27:07,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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) Word has length 9 [2023-11-21 22:27:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:27:07,110 INFO L225 Difference]: With dead ends: 67 [2023-11-21 22:27:07,111 INFO L226 Difference]: Without dead ends: 46 [2023-11-21 22:27:07,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:27:07,115 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:27:07,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 39 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:27:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-21 22:27:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 33. [2023-11-21 22:27:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 32 states have internal predecessors, (40), 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) [2023-11-21 22:27:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-11-21 22:27:07,128 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 9 [2023-11-21 22:27:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:27:07,128 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-11-21 22:27:07,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2023-11-21 22:27:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-11-21 22:27:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 22:27:07,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:27:07,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:07,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:27:07,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:27:07,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:07,136 INFO L85 PathProgramCache]: Analyzing trace with hash -436854166, now seen corresponding path program 1 times [2023-11-21 22:27:07,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269551443] [2023-11-21 22:27:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:07,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:07,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:07,277 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:27:07,278 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-21 22:27:07,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-21 22:27:07,280 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-21 22:27:07,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:27:07,284 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 22:27:07,288 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:27:07,304 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-21 22:27:07,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-21 22:27:07,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-21 22:27:07,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-21 22:27:07,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-21 22:27:07,307 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-21 22:27:07,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:27:07 BoogieIcfgContainer [2023-11-21 22:27:07,317 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:27:07,318 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:27:07,318 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:27:07,318 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:27:07,318 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:27:05" (3/4) ... [2023-11-21 22:27:07,319 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 22:27:07,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-21 22:27:07,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-21 22:27:07,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-21 22:27:07,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-21 22:27:07,324 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-21 22:27:07,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-21 22:27:07,363 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:27:07,363 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:27:07,364 INFO L158 Benchmark]: Toolchain (without parser) took 2632.06ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 101.3MB in the beginning and 102.1MB in the end (delta: -769.6kB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,365 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 112.1MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:07,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.18ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 83.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.66ms. Allocated memory is still 144.7MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,369 INFO L158 Benchmark]: Boogie Preprocessor took 49.37ms. Allocated memory is still 144.7MB. Free memory was 80.9MB in the beginning and 78.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,373 INFO L158 Benchmark]: RCFGBuilder took 503.35ms. Allocated memory is still 144.7MB. Free memory was 78.2MB in the beginning and 60.4MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,373 INFO L158 Benchmark]: TraceAbstraction took 1522.63ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 59.9MB in the beginning and 104.2MB in the end (delta: -44.3MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,374 INFO L158 Benchmark]: Witness Printer took 45.63ms. Allocated memory is still 201.3MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:27:07,377 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory was 112.2MB in the beginning and 112.1MB in the end (delta: 34.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.18ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 83.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.66ms. Allocated memory is still 144.7MB. Free memory was 83.0MB in the beginning and 80.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.37ms. Allocated memory is still 144.7MB. Free memory was 80.9MB in the beginning and 78.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 503.35ms. Allocated memory is still 144.7MB. Free memory was 78.2MB in the beginning and 60.4MB in the end (delta: 17.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1522.63ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 59.9MB in the beginning and 104.2MB in the end (delta: -44.3MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 45.63ms. Allocated memory is still 201.3MB. Free memory was 104.2MB in the beginning and 102.1MB 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1034]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; VAL [head={4:0}, state=1, x={4:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) VAL [head={4:0}, state=1, x={4:0}] [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={4:0}, state=1, x={4:0}] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] reach_error() VAL [head={4:0}, state=1, x={4:0}] - UnprovableResult [Line: 1025]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 69 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 22:27:07,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4abd575c-6762-494d-9914-fa78f0db4d25/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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