./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme --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 32bit --witnessprinter.graph.data.programhash d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:23,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:23,578 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:47:23,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:23,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:23,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:23,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:23,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:23,637 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:23,638 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:23,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:23,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:23,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:23,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:23,642 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:23,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:23,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:23,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:23,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:23,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:23,645 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:47:23,646 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:47:23,646 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:47:23,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:23,647 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:47:23,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:47:23,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:23,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:23,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:23,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:23,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:23,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:23,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:23,652 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:23,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:23,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:23,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:23,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:23,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:23,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:23,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:23,654 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 [2023-11-26 11:47:24,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:24,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:24,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:24,048 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:24,051 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:24,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2023-11-26 11:47:27,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:27,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:27,505 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2023-11-26 11:47:27,515 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/data/a53f3d52a/4cdfa73d79d242b48addc76d1564c533/FLAG56f3132a1 [2023-11-26 11:47:27,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/data/a53f3d52a/4cdfa73d79d242b48addc76d1564c533 [2023-11-26 11:47:27,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:27,549 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:27,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:27,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:27,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:27,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bcfa2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27, skipping insertion in model container [2023-11-26 11:47:27,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:27,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:27,854 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:27,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:27,896 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:27,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27 WrapperNode [2023-11-26 11:47:27,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:27,898 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:27,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:27,900 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:27,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,968 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-11-26 11:47:27,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:27,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:27,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:27,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:27,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:27,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,002 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-11-26 11:47:28,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,017 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:28,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:28,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:28,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:28,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (1/1) ... [2023-11-26 11:47:28,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:28,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:28,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:28,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:28,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:47:28,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:47:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:47:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:47:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:28,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:47:28,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:47:28,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:47:28,179 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:28,182 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:28,435 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:28,475 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:28,476 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:47:28,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:28 BoogieIcfgContainer [2023-11-26 11:47:28,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:28,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:28,480 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:28,483 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:28,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:27" (1/3) ... [2023-11-26 11:47:28,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6064edc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:28, skipping insertion in model container [2023-11-26 11:47:28,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:27" (2/3) ... [2023-11-26 11:47:28,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6064edc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:28, skipping insertion in model container [2023-11-26 11:47:28,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:28" (3/3) ... [2023-11-26 11:47:28,487 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2023-11-26 11:47:28,537 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:28,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-26 11:47:28,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:28,602 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6a3267ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:28,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-26 11:47:28,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 2.25) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:47:28,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:28,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:47:28,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:28,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash 91874, now seen corresponding path program 1 times [2023-11-26 11:47:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:28,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795832332] [2023-11-26 11:47:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:28,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795832332] [2023-11-26 11:47:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795832332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:28,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048705435] [2023-11-26 11:47:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:28,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:47:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:47:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:28,861 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 2.25) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:28,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:28,915 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-11-26 11:47:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:47:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-26 11:47:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:28,924 INFO L225 Difference]: With dead ends: 23 [2023-11-26 11:47:28,925 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 11:47:28,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:47:28,930 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:28,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 11:47:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 11:47:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-26 11:47:28,969 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 3 [2023-11-26 11:47:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:28,969 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-26 11:47:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-11-26 11:47:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:47:28,970 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:28,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:47:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:28,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:28,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash 91564, now seen corresponding path program 1 times [2023-11-26 11:47:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:28,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408825563] [2023-11-26 11:47:28,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:29,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408825563] [2023-11-26 11:47:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408825563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:29,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:29,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76511064] [2023-11-26 11:47:29,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:29,103 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:29,134 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2023-11-26 11:47:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-26 11:47:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:29,135 INFO L225 Difference]: With dead ends: 18 [2023-11-26 11:47:29,135 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 11:47:29,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:29,137 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:29,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 8 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:29,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 11:47:29,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 11:47:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2023-11-26 11:47:29,142 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2023-11-26 11:47:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:29,143 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2023-11-26 11:47:29,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2023-11-26 11:47:29,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:47:29,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:29,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:47:29,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:47:29,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:29,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash 91565, now seen corresponding path program 1 times [2023-11-26 11:47:29,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021540621] [2023-11-26 11:47:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:29,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:29,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021540621] [2023-11-26 11:47:29,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021540621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:29,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:29,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:47:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772059619] [2023-11-26 11:47:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:29,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:29,307 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:29,331 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-11-26 11:47:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-26 11:47:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:29,332 INFO L225 Difference]: With dead ends: 17 [2023-11-26 11:47:29,332 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 11:47:29,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:29,335 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:29,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 11:47:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-26 11:47:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 16 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) [2023-11-26 11:47:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-26 11:47:29,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2023-11-26 11:47:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:29,340 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-26 11:47:29,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-26 11:47:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-26 11:47:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:47:29,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:29,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:47:29,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:47:29,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:29,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:29,343 INFO L85 PathProgramCache]: Analyzing trace with hash 91618, now seen corresponding path program 1 times [2023-11-26 11:47:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670570472] [2023-11-26 11:47:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:29,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:29,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670570472] [2023-11-26 11:47:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670570472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:29,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:29,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:29,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43112177] [2023-11-26 11:47:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:29,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:29,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:29,537 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.0) 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) [2023-11-26 11:47:29,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:29,603 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-11-26 11:47:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:29,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) 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 [2023-11-26 11:47:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:29,605 INFO L225 Difference]: With dead ends: 23 [2023-11-26 11:47:29,605 INFO L226 Difference]: Without dead ends: 23 [2023-11-26 11:47:29,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:47:29,607 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:29,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 12 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:29,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-26 11:47:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2023-11-26 11:47:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 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) [2023-11-26 11:47:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-26 11:47:29,612 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 3 [2023-11-26 11:47:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:29,613 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-26 11:47:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) 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) [2023-11-26 11:47:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-26 11:47:29,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:47:29,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:29,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:47:29,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:47:29,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:29,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1563867580, now seen corresponding path program 1 times [2023-11-26 11:47:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:29,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897598173] [2023-11-26 11:47:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:29,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:29,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:29,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:29,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897598173] [2023-11-26 11:47:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897598173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598105604] [2023-11-26 11:47:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:29,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:29,849 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-11-26 11:47:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:29,887 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-11-26 11:47:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:29,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2023-11-26 11:47:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:29,889 INFO L225 Difference]: With dead ends: 22 [2023-11-26 11:47:29,889 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 11:47:29,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:47:29,896 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 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 [2023-11-26 11:47:29,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 11:47:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2023-11-26 11:47:29,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-11-26 11:47:29,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2023-11-26 11:47:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:29,901 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-26 11:47:29,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2023-11-26 11:47:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-11-26 11:47:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:47:29,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:29,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:29,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:47:29,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:29,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 361848815, now seen corresponding path program 1 times [2023-11-26 11:47:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808517111] [2023-11-26 11:47:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808517111] [2023-11-26 11:47:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808517111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003087577] [2023-11-26 11:47:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:30,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:30,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:30,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:47:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 11:47:30,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:30,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003087577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:47:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-11-26 11:47:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014358146] [2023-11-26 11:47:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:30,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:47:30,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:47:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:30,296 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:30,361 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-11-26 11:47:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:47:30,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2023-11-26 11:47:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:30,363 INFO L225 Difference]: With dead ends: 29 [2023-11-26 11:47:30,363 INFO L226 Difference]: Without dead ends: 29 [2023-11-26 11:47:30,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:30,368 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 24 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 [2023-11-26 11:47:30,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 24 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-26 11:47:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2023-11-26 11:47:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-26 11:47:30,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2023-11-26 11:47:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:30,373 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-26 11:47:30,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-26 11:47:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:47:30,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:30,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:30,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:30,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:30,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:30,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -155692349, now seen corresponding path program 1 times [2023-11-26 11:47:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967723002] [2023-11-26 11:47:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:30,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967723002] [2023-11-26 11:47:30,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967723002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:30,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:30,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:47:30,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258140334] [2023-11-26 11:47:30,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:30,652 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:30,675 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-26 11:47:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-11-26 11:47:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:30,677 INFO L225 Difference]: With dead ends: 16 [2023-11-26 11:47:30,677 INFO L226 Difference]: Without dead ends: 16 [2023-11-26 11:47:30,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:30,680 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:30,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:30,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-26 11:47:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-26 11:47:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 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) [2023-11-26 11:47:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-26 11:47:30,688 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2023-11-26 11:47:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:30,688 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-26 11:47:30,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:30,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-26 11:47:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-26 11:47:30,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:30,689 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:47:30,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:30,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -155607854, now seen corresponding path program 1 times [2023-11-26 11:47:30,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:30,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749074024] [2023-11-26 11:47:30,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:47:30,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:30,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749074024] [2023-11-26 11:47:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749074024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:30,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177353802] [2023-11-26 11:47:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:30,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:30,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:30,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:47:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:30,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 11:47:30,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:30,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:31,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-26 11:47:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:47:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177353802] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:31,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:31,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2023-11-26 11:47:31,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76371173] [2023-11-26 11:47:31,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:31,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:47:31,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:31,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:47:31,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:47:31,101 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:31,297 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2023-11-26 11:47:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:47:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 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 10 [2023-11-26 11:47:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:31,299 INFO L225 Difference]: With dead ends: 44 [2023-11-26 11:47:31,300 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 11:47:31,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:47:31,301 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 115 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:31,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 49 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:31,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 11:47:31,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2023-11-26 11:47:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-11-26 11:47:31,307 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2023-11-26 11:47:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:31,307 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-11-26 11:47:31,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-11-26 11:47:31,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:47:31,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:31,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:31,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:31,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:31,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:31,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash 629947647, now seen corresponding path program 1 times [2023-11-26 11:47:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:31,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465665430] [2023-11-26 11:47:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465665430] [2023-11-26 11:47:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465665430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43598517] [2023-11-26 11:47:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:31,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:31,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:31,629 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:31,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:47:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:31,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:47:31,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:31,791 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#in~0#1.base_31| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_31| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_31|) 0))) is different from true [2023-11-26 11:47:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:47:31,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:31,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43598517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:31,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:47:31,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-26 11:47:31,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147164870] [2023-11-26 11:47:31,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:31,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:47:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:47:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2023-11-26 11:47:31,794 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:31,809 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2023-11-26 11:47:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:47:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-26 11:47:31,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:31,810 INFO L225 Difference]: With dead ends: 25 [2023-11-26 11:47:31,810 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 11:47:31,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2023-11-26 11:47:31,811 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:31,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2023-11-26 11:47:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 11:47:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 11:47:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-11-26 11:47:31,815 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2023-11-26 11:47:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:31,815 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-11-26 11:47:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-11-26 11:47:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-26 11:47:31,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:31,816 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 11:47:31,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:32,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:32,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:32,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:32,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1584593570, now seen corresponding path program 2 times [2023-11-26 11:47:32,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:32,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571688048] [2023-11-26 11:47:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:32,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 11:47:32,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:32,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571688048] [2023-11-26 11:47:32,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571688048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:32,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532230070] [2023-11-26 11:47:32,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:47:32,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:32,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:32,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:32,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:47:32,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:47:32,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:32,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:47:32,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:47:32,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:32,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-26 11:47:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:47:32,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532230070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:32,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:32,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 20 [2023-11-26 11:47:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563650866] [2023-11-26 11:47:32,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:32,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 11:47:32,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:47:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:47:32,812 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:33,212 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2023-11-26 11:47:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 11:47:33,213 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 20 [2023-11-26 11:47:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:33,214 INFO L225 Difference]: With dead ends: 34 [2023-11-26 11:47:33,214 INFO L226 Difference]: Without dead ends: 34 [2023-11-26 11:47:33,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:47:33,215 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 20 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:33,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:47:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-26 11:47:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-11-26 11:47:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 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) [2023-11-26 11:47:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-11-26 11:47:33,219 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2023-11-26 11:47:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:33,219 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-11-26 11:47:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-11-26 11:47:33,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:47:33,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:33,220 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 1, 1, 1, 1, 1] [2023-11-26 11:47:33,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:47:33,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-26 11:47:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash -265253995, now seen corresponding path program 3 times [2023-11-26 11:47:33,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:33,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72539629] [2023-11-26 11:47:33,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:33,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-26 11:47:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72539629] [2023-11-26 11:47:33,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72539629] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:33,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783530373] [2023-11-26 11:47:33,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:47:33,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:33,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:33,628 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:33,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:47:33,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:47:33,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:33,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 11:47:33,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:33,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-26 11:47:33,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-26 11:47:34,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:47:34,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-26 11:47:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-26 11:47:34,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:34,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-11-26 11:47:34,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2023-11-26 11:47:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-26 11:47:34,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783530373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:34,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:34,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-11-26 11:47:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787968951] [2023-11-26 11:47:34,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:47:34,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:47:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:47:34,693 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:34,957 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-11-26 11:47:34,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:47:34,960 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 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 32 [2023-11-26 11:47:34,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:34,960 INFO L225 Difference]: With dead ends: 35 [2023-11-26 11:47:34,960 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:47:34,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:47:34,961 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:34,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:47:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:47:34,963 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) [2023-11-26 11:47:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:47:34,963 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2023-11-26 11:47:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:34,963 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:47:34,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:47:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:47:34,963 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:47:34,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-26 11:47:34,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-26 11:47:34,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-26 11:47:34,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-26 11:47:34,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-26 11:47:34,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-26 11:47:34,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-26 11:47:34,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-26 11:47:34,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-11-26 11:47:34,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-11-26 11:47:34,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:35,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:35,174 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:47:35,177 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:47:35,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:47:35 BoogieIcfgContainer [2023-11-26 11:47:35,180 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:47:35,180 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:35,181 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:35,181 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:35,181 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:28" (3/4) ... [2023-11-26 11:47:35,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:47:35,192 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-26 11:47:35,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 11:47:35,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:47:35,193 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:47:35,287 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:47:35,287 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:47:35,288 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:35,288 INFO L158 Benchmark]: Toolchain (without parser) took 7739.71ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 121.6MB in the beginning and 113.8MB in the end (delta: 7.8MB). Peak memory consumption was 44.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,289 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:35,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.64ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 111.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.66ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,290 INFO L158 Benchmark]: Boogie Preprocessor took 50.17ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 107.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,290 INFO L158 Benchmark]: RCFGBuilder took 456.16ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 93.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,291 INFO L158 Benchmark]: TraceAbstraction took 6700.56ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 92.9MB in the beginning and 117.8MB in the end (delta: -24.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,291 INFO L158 Benchmark]: Witness Printer took 107.22ms. Allocated memory is still 201.3MB. Free memory was 117.8MB in the beginning and 113.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:47:35,293 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.64ms. Allocated memory is still 167.8MB. Free memory was 121.6MB in the beginning and 111.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.66ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.17ms. Allocated memory is still 167.8MB. Free memory was 109.6MB in the beginning and 107.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.16ms. Allocated memory is still 167.8MB. Free memory was 107.6MB in the beginning and 93.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6700.56ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 92.9MB in the beginning and 117.8MB in the end (delta: -24.9MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Witness Printer took 107.22ms. Allocated memory is still 201.3MB. Free memory was 117.8MB in the beginning and 113.8MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. 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: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: 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, 23 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 247 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 247 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 500 IncrementalHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 84 mSDtfsCounter, 500 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=10, InterpolantAutomatonStates: 67, 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, 11 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 194 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 237 ConstructedInterpolants, 1 QuantifiedInterpolants, 2637 SizeOfPredicates, 8 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 19 InterpolantComputations, 8 PerfectInterpolantSequences, 357/480 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:47:35,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91164b2e-2892-4ef7-917a-b99e32adcc8f/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE