./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/twisted-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/twisted-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e028c51cfa02b345902e1292d1a644c7ee4a15183825ee6e2ec2fc316df147e6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:08:24,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:08:24,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-12-02 11:08:24,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:08:24,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:08:24,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:08:24,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:08:24,972 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:08:24,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:08:24,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:08:24,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:08:24,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:08:24,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:08:24,974 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 11:08:24,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:08:24,975 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:08:24,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:08:24,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:08:24,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:08:24,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:08:24,977 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e028c51cfa02b345902e1292d1a644c7ee4a15183825ee6e2ec2fc316df147e6 [2024-12-02 11:08:25,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:08:25,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:08:25,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:08:25,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:08:25,218 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:08:25,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-memory-alloca/twisted-alloca.i [2024-12-02 11:08:27,877 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/data/1735fb51b/1cea4a86cb4c40e2878cb27f3fd7fbf4/FLAGff6008cfa [2024-12-02 11:08:28,088 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:08:28,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/sv-benchmarks/c/termination-memory-alloca/twisted-alloca.i [2024-12-02 11:08:28,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/data/1735fb51b/1cea4a86cb4c40e2878cb27f3fd7fbf4/FLAGff6008cfa [2024-12-02 11:08:28,111 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/data/1735fb51b/1cea4a86cb4c40e2878cb27f3fd7fbf4 [2024-12-02 11:08:28,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:08:28,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:08:28,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:08:28,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:08:28,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:08:28,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272ce479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28, skipping insertion in model container [2024-12-02 11:08:28,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:08:28,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:08:28,346 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:08:28,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:08:28,396 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:08:28,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28 WrapperNode [2024-12-02 11:08:28,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:08:28,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:08:28,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:08:28,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:08:28,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,410 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,425 INFO L138 Inliner]: procedures = 111, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 97 [2024-12-02 11:08:28,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:08:28,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:08:28,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:08:28,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:08:28,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,445 INFO L175 MemorySlicer]: Split 15 memory accesses to 4 slices as follows [5, 7, 1, 2]. 47 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0, 0]. The 6 writes are split as follows [2, 2, 1, 1]. [2024-12-02 11:08:28,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,450 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:08:28,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:08:28,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:08:28,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:08:28,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (1/1) ... [2024-12-02 11:08:28,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:08:28,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:08:28,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:08:28,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:08:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 11:08:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 11:08:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:08:28,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:08:28,590 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:08:28,591 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:08:28,809 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-12-02 11:08:28,809 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:08:28,817 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:08:28,818 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:08:28,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:28 BoogieIcfgContainer [2024-12-02 11:08:28,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:08:28,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:08:28,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:08:28,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:08:28,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:08:28" (1/3) ... [2024-12-02 11:08:28,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc2a4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:08:28, skipping insertion in model container [2024-12-02 11:08:28,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:08:28" (2/3) ... [2024-12-02 11:08:28,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc2a4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:08:28, skipping insertion in model container [2024-12-02 11:08:28,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:28" (3/3) ... [2024-12-02 11:08:28,825 INFO L128 eAbstractionObserver]: Analyzing ICFG twisted-alloca.i [2024-12-02 11:08:28,836 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:08:28,837 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG twisted-alloca.i that has 1 procedures, 63 locations, 1 initial locations, 2 loop locations, and 31 error locations. [2024-12-02 11:08:28,868 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:08:28,878 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@787a854c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:08:28,878 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-12-02 11:08:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 31 states have (on average 2.193548387096774) internal successors, (68), 62 states have internal predecessors, (68), 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) [2024-12-02 11:08:28,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-02 11:08:28,885 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:28,885 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-12-02 11:08:28,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:28,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:28,890 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-12-02 11:08:28,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223146552] [2024-12-02 11:08:28,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:28,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:29,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223146552] [2024-12-02 11:08:29,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223146552] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:29,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:29,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388032482] [2024-12-02 11:08:29,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:29,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:29,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:29,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:29,232 INFO L87 Difference]: Start difference. First operand has 63 states, 31 states have (on average 2.193548387096774) internal successors, (68), 62 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-12-02 11:08:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:29,317 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-12-02 11:08:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:29,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-12-02 11:08:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:29,324 INFO L225 Difference]: With dead ends: 61 [2024-12-02 11:08:29,324 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 11:08:29,326 INFO L434 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 [2024-12-02 11:08:29,328 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 55 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:29,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 34 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:08:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 11:08:29,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-12-02 11:08:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 30 states have (on average 2.066666666666667) internal successors, (62), 58 states have internal predecessors, (62), 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) [2024-12-02 11:08:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-12-02 11:08:29,356 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 3 [2024-12-02 11:08:29,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:29,356 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-12-02 11:08:29,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-12-02 11:08:29,357 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-12-02 11:08:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-02 11:08:29,357 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:29,357 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-12-02 11:08:29,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 11:08:29,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:29,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-12-02 11:08:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715093713] [2024-12-02 11:08:29,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:29,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:29,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:29,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715093713] [2024-12-02 11:08:29,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715093713] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:29,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:29,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:29,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818596470] [2024-12-02 11:08:29,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:29,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:29,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:29,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:29,545 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-12-02 11:08:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:29,605 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2024-12-02 11:08:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:29,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-12-02 11:08:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:29,606 INFO L225 Difference]: With dead ends: 57 [2024-12-02 11:08:29,606 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 11:08:29,607 INFO L434 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 [2024-12-02 11:08:29,608 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 56 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:29,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 34 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:08:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 11:08:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-12-02 11:08:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 2.0) internal successors, (60), 56 states have internal predecessors, (60), 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) [2024-12-02 11:08:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2024-12-02 11:08:29,613 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 3 [2024-12-02 11:08:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:29,613 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2024-12-02 11:08:29,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-12-02 11:08:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2024-12-02 11:08:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 11:08:29,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:29,614 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 11:08:29,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:08:29,614 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:29,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2024-12-02 11:08:29,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:29,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832808828] [2024-12-02 11:08:29,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:29,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832808828] [2024-12-02 11:08:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832808828] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:29,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:29,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:29,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887715789] [2024-12-02 11:08:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:29,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:29,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:29,687 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:29,687 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:29,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:29,751 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2024-12-02 11:08:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 11:08:29,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:29,752 INFO L225 Difference]: With dead ends: 56 [2024-12-02 11:08:29,752 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 11:08:29,752 INFO L434 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 [2024-12-02 11:08:29,753 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:29,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:08:29,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 11:08:29,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 11:08:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:29,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2024-12-02 11:08:29,758 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 4 [2024-12-02 11:08:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:29,758 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2024-12-02 11:08:29,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2024-12-02 11:08:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-12-02 11:08:29,758 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:29,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-12-02 11:08:29,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:08:29,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:29,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2024-12-02 11:08:29,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:29,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019223596] [2024-12-02 11:08:29,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019223596] [2024-12-02 11:08:29,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019223596] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:29,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:29,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:29,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821969036] [2024-12-02 11:08:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:29,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:29,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:29,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:29,855 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:29,909 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2024-12-02 11:08:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-12-02 11:08:29,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:29,910 INFO L225 Difference]: With dead ends: 55 [2024-12-02 11:08:29,910 INFO L226 Difference]: Without dead ends: 55 [2024-12-02 11:08:29,910 INFO L434 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 [2024-12-02 11:08:29,911 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:29,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-12-02 11:08:29,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-12-02 11:08:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 54 states have internal predecessors, (58), 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) [2024-12-02 11:08:29,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2024-12-02 11:08:29,916 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 4 [2024-12-02 11:08:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:29,916 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2024-12-02 11:08:29,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:29,917 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2024-12-02 11:08:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-02 11:08:29,917 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:29,917 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 11:08:29,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:08:29,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:29,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 28691812, now seen corresponding path program 1 times [2024-12-02 11:08:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368109825] [2024-12-02 11:08:29,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:29,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:29,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368109825] [2024-12-02 11:08:29,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368109825] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:29,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:29,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:29,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068934458] [2024-12-02 11:08:29,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:29,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:29,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:29,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:29,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:29,977 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-12-02 11:08:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,031 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2024-12-02 11:08:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:30,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-12-02 11:08:30,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,032 INFO L225 Difference]: With dead ends: 48 [2024-12-02 11:08:30,032 INFO L226 Difference]: Without dead ends: 48 [2024-12-02 11:08:30,032 INFO L434 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 [2024-12-02 11:08:30,033 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-12-02 11:08:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-12-02 11:08:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.7) internal successors, (51), 47 states have internal predecessors, (51), 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) [2024-12-02 11:08:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2024-12-02 11:08:30,037 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 5 [2024-12-02 11:08:30,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,037 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2024-12-02 11:08:30,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-12-02 11:08:30,037 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2024-12-02 11:08:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-02 11:08:30,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:30,038 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 11:08:30,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:08:30,038 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:30,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:30,039 INFO L85 PathProgramCache]: Analyzing trace with hash 28691813, now seen corresponding path program 1 times [2024-12-02 11:08:30,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:30,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738278102] [2024-12-02 11:08:30,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:30,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:30,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:30,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738278102] [2024-12-02 11:08:30,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738278102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:30,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:30,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116555056] [2024-12-02 11:08:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:30,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:30,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:30,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:30,108 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-12-02 11:08:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,144 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2024-12-02 11:08:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:30,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-12-02 11:08:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,145 INFO L225 Difference]: With dead ends: 41 [2024-12-02 11:08:30,145 INFO L226 Difference]: Without dead ends: 41 [2024-12-02 11:08:30,145 INFO L434 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 [2024-12-02 11:08:30,146 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 33 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 30 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-12-02 11:08:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-12-02 11:08:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 40 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) [2024-12-02 11:08:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2024-12-02 11:08:30,149 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 5 [2024-12-02 11:08:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,149 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2024-12-02 11:08:30,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-12-02 11:08:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2024-12-02 11:08:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 11:08:30,150 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:30,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 11:08:30,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:08:30,150 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:30,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash 889446154, now seen corresponding path program 1 times [2024-12-02 11:08:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:30,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302781285] [2024-12-02 11:08:30,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:30,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:30,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302781285] [2024-12-02 11:08:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302781285] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:30,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:30,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:30,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671154315] [2024-12-02 11:08:30,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:30,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:30,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:30,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:30,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:30,182 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-12-02 11:08:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,221 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2024-12-02 11:08:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-12-02 11:08:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,222 INFO L225 Difference]: With dead ends: 36 [2024-12-02 11:08:30,222 INFO L226 Difference]: Without dead ends: 36 [2024-12-02 11:08:30,222 INFO L434 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 [2024-12-02 11:08:30,223 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-02 11:08:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-12-02 11:08:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 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) [2024-12-02 11:08:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2024-12-02 11:08:30,226 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 6 [2024-12-02 11:08:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,226 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2024-12-02 11:08:30,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-12-02 11:08:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2024-12-02 11:08:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 11:08:30,226 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:30,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 11:08:30,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:08:30,226 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:30,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 889446155, now seen corresponding path program 1 times [2024-12-02 11:08:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:30,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466436369] [2024-12-02 11:08:30,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:30,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:30,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466436369] [2024-12-02 11:08:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466436369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 11:08:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922311824] [2024-12-02 11:08:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:30,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:08:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:30,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:08:30,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:08:30,283 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2024-12-02 11:08:30,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,311 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-12-02 11:08:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:08:30,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2024-12-02 11:08:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,312 INFO L225 Difference]: With dead ends: 31 [2024-12-02 11:08:30,312 INFO L226 Difference]: Without dead ends: 31 [2024-12-02 11:08:30,312 INFO L434 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 [2024-12-02 11:08:30,313 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 22 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-12-02 11:08:30,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-12-02 11:08:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 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) [2024-12-02 11:08:30,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2024-12-02 11:08:30,315 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 6 [2024-12-02 11:08:30,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,315 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2024-12-02 11:08:30,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2024-12-02 11:08:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2024-12-02 11:08:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 11:08:30,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:30,316 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:08:30,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:08:30,316 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:30,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash 666296844, now seen corresponding path program 1 times [2024-12-02 11:08:30,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:30,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715181690] [2024-12-02 11:08:30,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:30,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:08:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715181690] [2024-12-02 11:08:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715181690] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:30,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:08:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034915677] [2024-12-02 11:08:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:30,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:08:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:30,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:08:30,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:08:30,395 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,423 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-12-02 11:08:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:08:30,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-12-02 11:08:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,424 INFO L225 Difference]: With dead ends: 47 [2024-12-02 11:08:30,424 INFO L226 Difference]: Without dead ends: 47 [2024-12-02 11:08:30,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:08:30,425 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-12-02 11:08:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2024-12-02 11:08:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 states have internal predecessors, (49), 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) [2024-12-02 11:08:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2024-12-02 11:08:30,428 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 18 [2024-12-02 11:08:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,428 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2024-12-02 11:08:30,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 11:08:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2024-12-02 11:08:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 11:08:30,429 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:08:30,429 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:08:30,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:08:30,430 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2024-12-02 11:08:30,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:08:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1127529060, now seen corresponding path program 1 times [2024-12-02 11:08:30,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:08:30,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821860842] [2024-12-02 11:08:30,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:08:30,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:08:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:08:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 11:08:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:08:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821860842] [2024-12-02 11:08:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821860842] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:08:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:08:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:08:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460109574] [2024-12-02 11:08:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:08:30,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:08:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:08:30,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:08:30,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:08:30,831 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-12-02 11:08:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:08:30,872 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2024-12-02 11:08:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:08:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 26 [2024-12-02 11:08:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:08:30,873 INFO L225 Difference]: With dead ends: 43 [2024-12-02 11:08:30,873 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 11:08:30,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:08:30,873 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:08:30,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 31 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:08:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 11:08:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 11:08:30,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-12-02 11:08:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 11:08:30,874 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2024-12-02 11:08:30,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:08:30,874 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 11:08:30,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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) [2024-12-02 11:08:30,874 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 11:08:30,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 11:08:30,876 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2024-12-02 11:08:30,876 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2024-12-02 11:08:30,877 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2024-12-02 11:08:30,878 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2024-12-02 11:08:30,879 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2024-12-02 11:08:30,879 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2024-12-02 11:08:30,879 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2024-12-02 11:08:30,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 11:08:30,881 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:08:30,883 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 11:08:30,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 11:08:30 BoogieIcfgContainer [2024-12-02 11:08:30,885 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 11:08:30,886 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 11:08:30,886 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 11:08:30,886 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 11:08:30,886 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:08:28" (3/4) ... [2024-12-02 11:08:30,888 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 11:08:30,895 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-12-02 11:08:30,895 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 11:08:30,895 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-12-02 11:08:30,895 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 11:08:30,946 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 11:08:30,946 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 11:08:30,946 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 11:08:30,947 INFO L158 Benchmark]: Toolchain (without parser) took 2832.78ms. Allocated memory is still 142.6MB. Free memory was 115.7MB in the beginning and 65.4MB in the end (delta: 50.3MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2024-12-02 11:08:30,947 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:08:30,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.74ms. Allocated memory is still 142.6MB. Free memory was 115.5MB in the beginning and 99.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:08:30,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.12ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:08:30,948 INFO L158 Benchmark]: Boogie Preprocessor took 32.56ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:08:30,948 INFO L158 Benchmark]: RCFGBuilder took 359.72ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 78.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 11:08:30,948 INFO L158 Benchmark]: TraceAbstraction took 2065.50ms. Allocated memory is still 142.6MB. Free memory was 77.9MB in the beginning and 70.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-12-02 11:08:30,949 INFO L158 Benchmark]: Witness Printer took 60.62ms. Allocated memory is still 142.6MB. Free memory was 70.6MB in the beginning and 65.4MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 11:08:30,950 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.74ms. Allocated memory is still 142.6MB. Free memory was 115.5MB in the beginning and 99.2MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.12ms. Allocated memory is still 142.6MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.56ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 95.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.72ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 78.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2065.50ms. Allocated memory is still 142.6MB. Free memory was 77.9MB in the beginning and 70.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Witness Printer took 60.62ms. Allocated memory is still 142.6MB. Free memory was 70.6MB in the beginning and 65.4MB in the end (delta: 5.2MB). There was no memory consumed. Max. memory is 16.1GB. * 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 63 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 448 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 134 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 291 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 314 mSDtfsCounter, 291 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=0, InterpolantAutomatonStates: 32, 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, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 1090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 2/2 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 11:08:30,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564d04a4-0b57-49fd-9aa0-3cca2f17193e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE