./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/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_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/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 64bit --witnessprinter.graph.data.programhash 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:05:51,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:05:52,072 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2023-11-26 12:05:52,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:05:52,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:05:52,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:05:52,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:05:52,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:05:52,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:05:52,127 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:05:52,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:05:52,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:05:52,130 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:05:52,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:05:52,132 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:05:52,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:05:52,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:05:52,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:05:52,134 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 12:05:52,134 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 12:05:52,134 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 12:05:52,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:05:52,135 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 12:05:52,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:05:52,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:05:52,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:05:52,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:05:52,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:05:52,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:05:52,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:52,140 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:05:52,140 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:05:52,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:05:52,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:05:52,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:05:52,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:05:52,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:05:52,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:05:52,142 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_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cf25f06134410cf3fe2cb13bebb45512b92052388b257a9b0f3e089d05f1ab2 [2023-11-26 12:05:52,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:05:52,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:05:52,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:05:52,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:05:52,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:05:52,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2023-11-26 12:05:55,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:05:56,039 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:05:56,057 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/sv-benchmarks/c/termination-memory-alloca/genady-alloca.i [2023-11-26 12:05:56,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/data/d43e43c37/04910a5004a647f28bc69b97f7ab5d11/FLAGe6bf9be5e [2023-11-26 12:05:56,093 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/data/d43e43c37/04910a5004a647f28bc69b97f7ab5d11 [2023-11-26 12:05:56,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:05:56,104 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:05:56,106 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:56,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:05:56,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:05:56,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62125012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56, skipping insertion in model container [2023-11-26 12:05:56,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:05:56,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:56,455 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:05:56,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:05:56,525 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:05:56,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56 WrapperNode [2023-11-26 12:05:56,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:05:56,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:56,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:05:56,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:05:56,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,548 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,567 INFO L138 Inliner]: procedures = 109, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2023-11-26 12:05:56,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:05:56,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:05:56,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:05:56,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:05:56,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,596 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [4, 4]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2023-11-26 12:05:56,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:05:56,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:05:56,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:05:56,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:05:56,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (1/1) ... [2023-11-26 12:05:56,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:05:56,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:56,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:05:56,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:05:56,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:05:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:05:56,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:05:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:05:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:05:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:05:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:05:56,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:05:56,795 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:05:56,797 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:05:56,981 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:05:57,019 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:05:57,019 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:05:57,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:57 BoogieIcfgContainer [2023-11-26 12:05:57,020 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:05:57,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:05:57,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:05:57,026 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:05:57,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:05:56" (1/3) ... [2023-11-26 12:05:57,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4254cae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:57, skipping insertion in model container [2023-11-26 12:05:57,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:05:56" (2/3) ... [2023-11-26 12:05:57,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4254cae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:05:57, skipping insertion in model container [2023-11-26 12:05:57,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:57" (3/3) ... [2023-11-26 12:05:57,030 INFO L112 eAbstractionObserver]: Analyzing ICFG genady-alloca.i [2023-11-26 12:05:57,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:05:57,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-11-26 12:05:57,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:05:57,104 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;@3478e662, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:05:57,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 12:05:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 12:05:57,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:57,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 12:05:57,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:57,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2484, now seen corresponding path program 1 times [2023-11-26 12:05:57,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517077943] [2023-11-26 12:05:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:57,488 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 12:05:57,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:57,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517077943] [2023-11-26 12:05:57,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517077943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:57,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504001156] [2023-11-26 12:05:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:57,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:57,546 INFO L87 Difference]: Start difference. First operand has 30 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:05:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:57,638 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2023-11-26 12:05:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:57,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 12:05:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:57,650 INFO L225 Difference]: With dead ends: 26 [2023-11-26 12:05:57,650 INFO L226 Difference]: Without dead ends: 25 [2023-11-26 12:05:57,652 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 12:05:57,656 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:57,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 7 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:05:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-26 12:05:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-26 12:05:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2023-11-26 12:05:57,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 2 [2023-11-26 12:05:57,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:57,689 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2023-11-26 12:05:57,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:05:57,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2023-11-26 12:05:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-26 12:05:57,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:57,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-26 12:05:57,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:05:57,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:57,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2485, now seen corresponding path program 1 times [2023-11-26 12:05:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517597305] [2023-11-26 12:05:57,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:57,798 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 12:05:57,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:57,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517597305] [2023-11-26 12:05:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517597305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:57,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:57,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:57,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013781627] [2023-11-26 12:05:57,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:57,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:57,802 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:05:57,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:57,831 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2023-11-26 12:05:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:57,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-26 12:05:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:57,832 INFO L225 Difference]: With dead ends: 21 [2023-11-26 12:05:57,832 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 12:05:57,833 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 12:05:57,834 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 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 12:05:57,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 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 12:05:57,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 12:05:57,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 12:05:57,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.75) internal successors, (21), 20 states have internal predecessors, (21), 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 12:05:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2023-11-26 12:05:57,839 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 2 [2023-11-26 12:05:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:57,840 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2023-11-26 12:05:57,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:05:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2023-11-26 12:05:57,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:05:57,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:57,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:05:57,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:05:57,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:57,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash 76980, now seen corresponding path program 1 times [2023-11-26 12:05:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120443259] [2023-11-26 12:05:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:57,933 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 12:05:57,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:57,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120443259] [2023-11-26 12:05:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120443259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:57,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:57,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:57,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466650228] [2023-11-26 12:05:57,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:57,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:57,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:57,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:57,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:57,936 INFO L87 Difference]: Start difference. First operand 21 states and 21 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 12:05:57,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:57,966 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-26 12:05:57,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:57,967 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 12:05:57,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:57,968 INFO L225 Difference]: With dead ends: 17 [2023-11-26 12:05:57,968 INFO L226 Difference]: Without dead ends: 17 [2023-11-26 12:05:57,968 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 12:05:57,970 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:57,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-26 12:05:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-26 12:05:57,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 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 12:05:57,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-26 12:05:57,974 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 3 [2023-11-26 12:05:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:57,975 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-26 12:05:57,975 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 12:05:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-26 12:05:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 12:05:57,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:57,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 12:05:57,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:05:57,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:57,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash 76981, now seen corresponding path program 1 times [2023-11-26 12:05:57,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:57,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265413660] [2023-11-26 12:05:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:58,117 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 12:05:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265413660] [2023-11-26 12:05:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265413660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:58,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:58,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:05:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933647962] [2023-11-26 12:05:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:58,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:05:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:05:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:05:58,120 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 12:05:58,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:58,143 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2023-11-26 12:05:58,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:05:58,143 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 12:05:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:58,144 INFO L225 Difference]: With dead ends: 13 [2023-11-26 12:05:58,144 INFO L226 Difference]: Without dead ends: 13 [2023-11-26 12:05:58,145 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 12:05:58,146 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:58,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-26 12:05:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-26 12:05:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-11-26 12:05:58,150 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2023-11-26 12:05:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:58,151 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-11-26 12:05:58,151 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 12:05:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-11-26 12:05:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 12:05:58,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:58,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:58,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:05:58,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:58,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:58,153 INFO L85 PathProgramCache]: Analyzing trace with hash 536741696, now seen corresponding path program 1 times [2023-11-26 12:05:58,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:58,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089036901] [2023-11-26 12:05:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:58,467 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 12:05:58,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:58,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089036901] [2023-11-26 12:05:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089036901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:58,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 12:05:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791158838] [2023-11-26 12:05:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 12:05:58,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 12:05:58,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 12:05:58,474 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 12:05:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:58,574 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2023-11-26 12:05:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 12:05:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 12:05:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:58,575 INFO L225 Difference]: With dead ends: 18 [2023-11-26 12:05:58,576 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 12:05:58,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:05:58,577 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:58,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:05:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 12:05:58,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2023-11-26 12:05:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:05:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-26 12:05:58,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2023-11-26 12:05:58,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:58,588 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-26 12:05:58,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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 12:05:58,588 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-26 12:05:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 12:05:58,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:58,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:05:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:05:58,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:05:58,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1173956688, now seen corresponding path program 1 times [2023-11-26 12:05:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:58,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924598597] [2023-11-26 12:05:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924598597] [2023-11-26 12:05:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924598597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:59,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667688380] [2023-11-26 12:05:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:59,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:59,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:59,038 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:59,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:05:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:59,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 12:05:59,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:59,199 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 15 treesize of output 1 [2023-11-26 12:05:59,225 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 15 treesize of output 1 [2023-11-26 12:05:59,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2023-11-26 12:05:59,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 36 treesize of output 13 [2023-11-26 12:05:59,479 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 15 treesize of output 7 [2023-11-26 12:05:59,506 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 15 treesize of output 7 [2023-11-26 12:05:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:59,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667688380] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:59,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:59,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-11-26 12:05:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126807124] [2023-11-26 12:05:59,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:59,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 12:05:59,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:59,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 12:05:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-11-26 12:05:59,732 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:00,049 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2023-11-26 12:06:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 12:06:00,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 12:06:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:00,050 INFO L225 Difference]: With dead ends: 32 [2023-11-26 12:06:00,050 INFO L226 Difference]: Without dead ends: 32 [2023-11-26 12:06:00,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2023-11-26 12:06:00,052 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:00,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 43 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:06:00,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-26 12:06:00,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-26 12:06:00,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2023-11-26 12:06:00,057 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 15 [2023-11-26 12:06:00,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:00,058 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2023-11-26 12:06:00,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2023-11-26 12:06:00,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 12:06:00,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:06:00,059 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-11-26 12:06:00,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:00,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-26 12:06:00,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2107488848, now seen corresponding path program 2 times [2023-11-26 12:06:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518672933] [2023-11-26 12:06:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:00,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:06:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:06:01,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:06:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518672933] [2023-11-26 12:06:01,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518672933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:06:01,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045781203] [2023-11-26 12:06:01,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 12:06:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:06:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:01,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:06:01,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:06:01,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 12:06:01,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 12:06:01,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 12:06:01,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:06:01,748 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc3#1.base_10| Int) (|v_ULTIMATE.start_main_#t~malloc2#1.base_10| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_10| 1) |v_ULTIMATE.start_main_#t~malloc3#1.base_10|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_10| 0) |v_ULTIMATE.start_main_#t~malloc3#1.base_10| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc2#1.base_10|) 0))) is different from true [2023-11-26 12:06:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-26 12:06:01,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:06:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045781203] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:06:01,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:06:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [20] total 22 [2023-11-26 12:06:01,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924654720] [2023-11-26 12:06:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:06:01,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:06:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:06:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:06:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2023-11-26 12:06:01,751 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:06:01,771 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2023-11-26 12:06:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:06:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-26 12:06:01,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:06:01,772 INFO L225 Difference]: With dead ends: 29 [2023-11-26 12:06:01,772 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 12:06:01,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2023-11-26 12:06:01,773 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:06:01,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2023-11-26 12:06:01,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 12:06:01,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 12:06:01,775 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 12:06:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 12:06:01,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-11-26 12:06:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:06:01,775 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:06:01,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:06:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 12:06:01,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 12:06:01,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-26 12:06:01,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-26 12:06:01,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-26 12:06:01,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-26 12:06:01,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-26 12:06:01,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-26 12:06:01,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-26 12:06:01,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-26 12:06:01,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-26 12:06:01,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-26 12:06:01,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-26 12:06:01,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-26 12:06:01,797 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-11-26 12:06:01,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-11-26 12:06:01,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-11-26 12:06:01,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-11-26 12:06:01,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2023-11-26 12:06:01,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:06:01,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 12:06:02,002 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-11-26 12:06:02,003 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:06:02,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:06:02 BoogieIcfgContainer [2023-11-26 12:06:02,006 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:06:02,007 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:06:02,007 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:06:02,007 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:06:02,008 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:05:57" (3/4) ... [2023-11-26 12:06:02,010 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:06:02,018 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-26 12:06:02,018 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 12:06:02,018 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:06:02,019 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-26 12:06:02,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:06:02,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:06:02,110 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:06:02,111 INFO L158 Benchmark]: Toolchain (without parser) took 6006.27ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 109.6MB in the beginning and 137.5MB in the end (delta: -27.8MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,111 INFO L158 Benchmark]: CDTParser took 0.55ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:02,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.43ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 94.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.49ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,117 INFO L158 Benchmark]: Boogie Preprocessor took 40.43ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 90.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,118 INFO L158 Benchmark]: RCFGBuilder took 410.65ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 76.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,119 INFO L158 Benchmark]: TraceAbstraction took 4983.37ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 76.1MB in the beginning and 141.7MB in the end (delta: -65.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,120 INFO L158 Benchmark]: Witness Printer took 102.82ms. Allocated memory is still 174.1MB. Free memory was 141.7MB in the beginning and 137.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:06:02,125 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.43ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 94.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.49ms. Allocated memory is still 142.6MB. Free memory was 93.7MB in the beginning and 92.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.43ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 90.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 410.65ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 76.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4983.37ms. Allocated memory was 142.6MB in the beginning and 174.1MB in the end (delta: 31.5MB). Free memory was 76.1MB in the beginning and 141.7MB in the end (delta: -65.6MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 102.82ms. Allocated memory is still 174.1MB. Free memory was 141.7MB in the beginning and 137.5MB in the end (delta: 4.2MB). 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: -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: 546]: 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, 30 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 11 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 248 IncrementalHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 34 mSDtfsCounter, 248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 40, 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, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 1 QuantifiedInterpolants, 1500 SizeOfPredicates, 10 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 30/69 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 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 12:06:02,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd8a3994-a5b2-4efc-a907-ae2003bae1a6/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